Oro Bulletin American Museum of Natural History [Vol. LITI 
Cyrenoida senegalensis (Deshayes) 
Text Figure 84 
Cyrenella senegalensis DrsHayYES, 1854, Proc. Zool. Soc. London, p. 341 (type 
locality: Senegal). 
Cyrenoidea senegalensis Deshayes. C. R. Barrarr, 1913, Ann. Soc. Zool. 
Malacol. Belgique, XLVII, (1912), p. 115. 
On the roots of mangrove trees in the creek of Banana (P. Hesse Coll.). 
Banana and Kunga (Lang and Chapin Coll.). 
The shell is subcircular, deep olive-buff under a network of fine, 
crowded, anastomosing, ee periostracal laminze. The interior is 
light blue. 
Length, 15.5 mm.; eight 14.0 mm.; diameter, 9.3 mm. 
Fig. 84. Cyrenoida senegalensis (Deshayes). Banana. 
Cyrenoida rosea brevidentata, new subspecies 
Text Figure 85 
Kunga, found dead on the mud with C. senegalensis (Lang and 
Chapin Coll.). 
Two specimens, dead but with the periostracum preserved, agree with d’ Ailly’s 
account and figures of C’. rosea in the size and shape of shell and hinge, but they differ 
by having the teeth much lower than they are represented in his fig. 30; so that we 
doubt whether the Kunga shells belong to the same species. In the left valve the 
teeth do not project ventrad as they appear in d’Ailly’s fig. 29 of rosea. One of our 
examples is faintly pinkish at the beaks, the other white. The brown periostracum is 
densely covered with very short lamine as in C. dupontia and other species. 
Length, 13.0 mm.; height, 10.6 mm.; diameter, 8.0mm. Type. 
Be 14.4 A eal si 9.0 Paratype. 
