Tritia aff. striatula striatula ( Eichwald, 1829 )

Sacchetti, Claudia, Landau, Bernard & Ávila, Sérgio P., 2023, The Lower Pliocene marine gastropods of Santa Maria Island, Azores: Taxonomy and palaeobiogeographic implications, Zootaxa 5295 (1), pp. 1-150 : 72

Tritia aff. striatula striatula ( Eichwald, 1829)

* Buccinum (Nassa) Doderleini Mayer , in Bronn in Reiss 1862: 26.

Buccinum doderleini Mayer — Mayer 1864: 75.

Type material. Single specimen, dimensions not given, Pinheiros, Santa Maria Island , Azores; whereabouts unknown ( Beu 2017:165) .

Original description. “ Ein wohl-erhaltenes Exemplar, wovon jedoch das Innere der M̧ndung nicht zu enthl̂ssen ist. Es ist ¾" lang, mit etwas bauchigen Umgängen und vertiefter Naht; der letzte Umgang genau von halber Länge des Ganzen; die innere Lippe ḑnn, aber breit ̧ber den Bauch des vorletzten Umgangs heŗber und bis gegen die Naht zurück-reichend; die äussere Lippe schief, wulstig; ein früherer Lippen-Wulst liegt um ⅔ Umgänge weiter zuŗck und wirkt mit den Bauch etwas mehr abzuplatten. Herr Mayer, welcher diese Art schon fŗher aufgestellt, kennt sie aus dem Helvétien von Turin [ A well-preserved specimen, from which, however, the matrix inside the aperture cannot be removed. It is ¾" [inches?] long, with somewhat bulbous whorls and deepened suture; the last whorl of exactly half the length of the shell; the inner lip callus thin, but broadly expanded over the venter of the penultimate whorl and reaching the suture; the outer lip crooked, bulging; an earlier lip bulge is ⅔ [of the whorl] further back and has a slightly flattening effect on the venter. Mr. Mayer, who described this species before, knows it from the Helvétien of Turin.]” (Bronn in Reiss 1862: 26).

Discussion. Bronn in Reiss (1862: 26) erected the taxon Buccinum (Nassa) Doderleini based on a specimen from Turin, Italy. The shell was apparently sent to Mayer and the taxon attributed to him by those authors. Mayer (1864: 75-76) commented that he had not received the specimen back a second time and could therefore offer neither a diagnosis nor figure of the species. He went on to say that “ The fossil remains of Turin, to which I have previously given the name, would most likely after more precise comparison, represent a somewhat shorter, almost entirely smooth variety of B. Hoernesi ( B. semistriatum Hoern. , non Broc.). The specimen from Santa Maria, however, should form a species of its own because, according to Bronn, its columella callus expands, which is not the case with B. Hoernesi ”. With no further specimens that fit this description, we cannot comment further. Today, these European nassariids are assigned to the genus Tritia Risso, 1826 .

Distribution. Lower Pliocene: Atlantic, Santa Maria Island, Azores (Mayer, in Bronn in Reiss 1862; Mayer 1864).