Cymonomidae Bouvier, 1898

Brösing, Andreas, 2010, Recent developments on the morphology of the brachyuran foregut ossicles and gastric teeth, Zootaxa 2510, pp. 1-44 : 15

Cymonomidae Bouvier, 1898

Cymonomus granulatus (Thomson, 1873) ( Fig. 10 )

Antero lateral to the zygocardiac ossicle (V) extends the prezygocardiac ossicle (Va), only recognised in Cymonomidae . Ossicles VIII, XI, XV, XIX, XIXa, XXIa and XXIb are not recognisable. The inferior lateral cardiac ossicle (XIII) has a clearly lateral connection to the subdentate ossicle (XIV). The subdentate ossicle (XIV) has postero-ventral a small rounded spine. Ossicles “IV–V”, “XVII–XXIII”, “XX–XXXI” and “XXV– XXVI-XXXII” are observed as mixed ossicles.

Figures

FIGURE 10. Foregut ossicles and gastric teeth of Cymonomus granulatus (Norman, in Wyville Thomson, 1873), A. dorsal view, B. lateral view, C. lateral tooth, D. accessory teeth, E. dorso-median tooth, F. cardio-pyloric valve; scales: A. & B. 1 mm, C. – F. 100 µm.