Row, 1909 : 205 Dendy & Row, 1913 : 771 Calcareous sponges of the Western Indian Ocean and Red Sea Van, Rob W. M. De, Nicole J. Zootaxa 2018 2018-06-01 4426 1 1 160 6Q454 (Row, 1909) Row 1909 [151,648,870,896] Calcarea Grantiidae Leucandrilla GBIF Animalia Leucosolenida 102 103 Porifera species intermedia    ?  Leucilla intermedia  Row, 1909: 205, pl. 20 fig.7, textfig. 5.    Leucandra infesta  Dendy & Row, 1913: 771.     Materialexamined. ZMAPor. 13482, Israel, Gulfof Aqaba, Schuhmacher’s Pinnacle, depth  2 m, under dead  Acropora, coll. M. Wunsch, field nr. AQ 126,  10 July 1998.   Description.Spiny-hairy, light green tube ( Fig. 62a) attached partially sideways to the substratum. Size 1.5 cmin length and approximately 1 cmin diameter. Terminal oscule naked, 3 mmin diameter. In alcohol ( Fig. 62b) the specimen is dirty white. Consistency firm.  Aquiferous system. Syllebeid.  Skeleton.( Fig. 62c) In cross section, the skeleton of the wall shows a cortical layer of small triactines pierced by giant diactines, subcortical skeleton of sagittal large tetractines, choanosomal and subatrial giant, intermediate and small triactines and tetractines, and atrial sagittal triactines and tetractines. The oscular collar contains trichoxeas.  Spicules.( Figs 63a–h) Diactines, triactines, tetractines, trichoxeas, Giant diactines ( Figs 63a,a 1) fusiform, tapering to thin points, more or less equiended, 1000– 2313–4680 x 24– 44.3–50 µm Cortical triactines ( Fig. 63b), slightly sagittal, but equiactinal, 81– 114–141 x 7.5– 9.3–11 µm Subcortical large tetractines ( Fig. 63c) with apical actines longest and protruding into the choanosome, with unpaired actines 225– 276–405 x 18–28.1–44 µm, paired actines 152– 238–324 x 15–21.6–30 µm, and apical actines 37– 184–390 x 9– 21.0–42 µm. Large triactines ( Fig. 63d) and intermediate forms from the choanosomal and subatrial region, slightly sagittal, 165– 364–570 x 15– 30.9–51 µm. Large tetractines ( Fig. 63e) from the choanosomal and subatrial region, slightly sagittal, unpaired actines 129– 227–345 x 15– 22.5–34 µm, paired actines 153– 249–324 x 12– 17.8–24 µm, apical actines 37– 53– 62 x 8– 14.3–19 µm Atrial triactines ( Fig. 63f), sagittal, unpaired actines 63– 137–181 x 7– 8.8–11 µm, paired actines 141– 161–174 x 6– 8.6–12 µm. Atrial tetractines ( Fig. 63g), sagittal, with thin sharp apical actines, unpaired actines 96– 119–148 x 10–12.0–16 µm, paired actines 123– 154–186 x 10– 10.8–14 µm, apical actines 15– 26.3– 37 x 6– 8.3–12 µm. Trichoxeas ( Fig. 63h), invariably broken, 800– 1000 x 3–3.5 µm.   Distribution and ecology. Red Sea, shallow depth.   Remarks.The above-described specimen conforms in most details to Row’s description and figures of specimens from Suez. There are slight discrepancies in the spicule sizes, but these are rather generalized in Row’s treatment, so this is of not much concern. In contrast to Row’s description there are triactines among the atrial spicules in our specimen, which throws some doubt on our identification, hence our assignment to aff. intermedia. It cannot be excluded that our material belongs to a different closely similar species. Dendy & Row’s (1913) new name  Leucandra infestafor the secondary homonymy of Row’s  Leucilla intermediawith Haeckel’s (1872)  Leucetta paradoxavar. intermediahas become moot, because the two species involved are now reassigned to different genera. Since the replacement name  L. infestawas only used once in Burton’s (1963) summary of Row’s description, which does not count as ‘use’ in the sense of ICZN art. 59.3, the name  L. intermediais reinstated.   FIGURE 63.  Leucandrillaaff. intermedia(Row, 1909), ZMA Por. 13482, from Gulf of Aqaba, a, giant diactine, a1, detail of ending of the same, b, cortical oxea, c, subcortical tetractines, d, large triactine, e, subatrial tetractine, f, atrial triactine, g, atrial tetractine, h, trichoxea (fragment). Unfortunately, we were unable to obtain partial 28S sequence data. To investigate the likely position of the genus  Leucandrillain our phylogeny of Fig. 3, we obtained sequences of a  Leucandrillaspec. (GenBank acc.nrs. MF872768, MF872769, MF872770and MF872771) from the Galapagos Islands. We included these in a separate analysis of the combined Galapagos and all other Calcaronea sequences, with the result that the Galapagos  Leucandrillagrouped in the same clade with the above mentioned  Leucandrasequences, at a low bootstrap value (42%). We do not show this result because we did not obtain WesternIndian Ocean or Red Seasequences of  Leucandrillato compare them with, but mention this examination to confirm that  Leucandrillaand  Leucandraare likely more closely related to each other than either is to other Calcaronea. 1848256253 1998-07-10 ZMA M. Wunsch Israel 2 Schuhmacher's Pinnacle Material 102 103 1 Gulf