Homolidae

Brösing, Andreas, 2010, Recent developments on the morphology of the brachyuran foregut ossicles and gastric teeth, Zootaxa 2510, pp. 1-44 : 10

Homolidae de Haan, 1839

The membrane of the stomach-sac is comparatively thick compared to all other examined brachyuran species.

Dagnaudus petterdi (Grant, 1905) ( Fig. 4 A, B)

The mesocardiac ossicle (I) has several posteriorly directed spines. The striped prepterocardiac ossicle (IIa) is more stronger than in Dromiidae and Dynomenidae , and does not reach the midline. A postpterocardiac ossicle (IIb) is not recognisable. The pectinal ossicle (VIII) has a triangular shape with seven accessory teeth.

Homola ranunculus Guinot and Richer de Forges, 1995 ( Fig. 4 C–F) and Homola barbata (Fabricius, 1793)

The very thin, extensive, paired prepterocardiac ossicles (IIa) join at the midline of the antero dorsal gastric mill. The very small pectinal ossicle (VIII) has a triangular shape with seven accessory teeth. The middle pleuropyloric ossicle (XXXII) has a pointed shape.

Paramola cuvieri (Risso, 1816)

The pectinal ossicle (VIII) has a triangular shape with 11 accessory teeth. The ventral keel of the anterior ossicle of the cardio-pyloric valve (XVI) is V-shaped. The posterior mesopyloric ossicle (XX) has on its ventral side an anterior as well as a posterior directed spine.

Figures

FIGURE 4. Foregut ossicles of Dagnaudus petterdi (Grant, 1905), A. dorsal view, B. lateral view; gastric teeth of Homola ranunculus Guinot & Richer de Forges, 1995, C. lateral tooth, D. accessory teeth, E. dorso-median tooth, F cardio-pyloric valve scales: A. & B. 2 mm, C. 500 μm, D. 200 μm, E. & F. 500 μm.