437 



Dominican Sections — Maury 



21 



splendid specimen from Gato on the southern side of the Island. 

 Dr. Jackson identified this as Clypeaster Dalli (Twitchell). It 

 was published as Diplothccanthus Dalli Twitchell in W. B. Clark 

 and M. W. Twitchell, 1915, Mesozoic and Cenozoic Echinoderm- 

 ata of the U. S., p. 218, PI. 99, figs. 2a-b, PI. 100, figs. ia-b. 

 Dr. Jackson writes : "Diplot/ieeant/ius is one of Duncan's genera 

 and H. L. Clark says it is not separable from Clypeaster in his 

 opinion. 



"Diplothecanthus Dalli (Twitchell) was originally described 

 from the Caloosahatchie Pliocene." 



Fauna of Zone D. — We found the following molluscs in this 



zone 



List of Species 



Terebra inaequalis Sby. 

 Conus proteus Hwass. 

 Conus Olssoni, n. sp. 

 Conus recognitus Gpy. 

 Conus marginatus Sby. 

 Surcula labiata Gabb. 

 Drillia venusta Sby. 

 Drillia losquemadica, n. sp. 

 Drillia Donalbertonis, n. sp. 

 Drillia hispaniolse, n. sp. 

 Clava plebeia Sby. 

 Clathurella Vendryesiana Dall. 

 Trigonostoma gurabis, n. sp. 

 Olivella Sancti-Dominici, n. sp. 

 Marginella coniformis Sby. 

 Lyria pulchella Sby. 

 Mitra quemadica, n. sp. 

 Strigatella ? perturbatrix, n. sp. 

 Costellaria Bullennewtoni, n. sp. 

 Fusus Heneker.i haitensis Sby. 

 Latirus f usiformis Gabb. 

 Vasum dominicense gurabicum, 



11. var. 

 Phos elegans Gpy. 

 Phos Guppyi Gabb. 

 Alectrion gurabensis, n. sp. 

 Alectriori losquemadica, n. sp. 



Murex messorius Sby. 

 Murex cornurectus Gpy. 

 Murex praepauxillus, n. sp. 

 Aspella scalarioides Blainville. 

 Coralliophila miocenica Gpy. 

 Gutturnium gracile gurabonicum, 



n. var. 

 Distortrix simillima Sby. 

 Bursa bufoniopsis, n. sp. 

 Cassis sulcifera Sby. 

 Sconsia laevigata Sby. 

 Morum domingense Sby. 

 Cyprsea spurcoides Gabb. 

 Cypraea dominicensis? Gabb. 

 Cypraea Gabbiana Gpy. 

 Cerithium microlineatum Gabb. 

 Cerithium Russelli, n. sp. 

 Cerithium uniseriale Sb}*. 

 Cerithium gurabense, n. sp. 

 Cerithium dominicense Gabb. 

 Siliquaria gurabensis, n. sp. 

 Turritella tornata Gpy. 

 Turritella subrnortoni, n. sp. 

 Polinices subclausa Sby. 

 Triforis Calypsonis, n. sp. 

 Area occidentalis Philippi 

 Barbatia cf. Bonaczvi Gabb. 



