335 
Gupp.' Reprint 
187 
shell occurs. This is marked by distinct characters. It widens more 
gradnall}’ from the initial to the oral end, and it is annulate 
rounded costae while C. parianus is smooth. Thus it has some 
resemblance to Caecum. It may be diagnosed as follows. 
cadptlus peranulatus n. sp. 
Shell tubular curved widening somewhat rapidly, annulate by 
regular rounded riblets, swollen near the broader end and con- 
stricted at the aperture. Length 4 mm. greatest diameter i mm. 
The annulations become larger and obsolescent towards the oral 
end. 
I have also detected the following Molluska in the Corosal 
Ditrupabed 
Cylichna mirrotrema Dal. 
Turbonila tenuilineata Gup. 
Bentliouela turbinata Gup. 
Marginela arcuata Gup. 
Marginela .sov'erbii Gab. 
Mangelia consentanea Gup. 
Clavatula labiata Gab. 
Pleurotoma haitense Sow. 
Teinostoma (Vitrinela) vitrea Gab. 
Clea truucata Gab. 
Nasa caribea Gab. 
Corbula heterogenea Gup. 
Leda acuta Gab. 
Leda flexuosa Heilp. 
Dentalium pri.sma Dal. 
Page 5 
Some polyzoa also occur in the bed, the mo.st noticeable be- 
ing Diastroporlea umbelata or a nearl}' allied species, and a Vin- 
cularia. These are also found in the Pointapier Ditrupabed : 
they are almost always in fragments. Besides Planorbulina lar- 
vata other Foraminifera occur for instance Cornuspira and amo- 
discus. Many others await a diligent collector. The determina- 
tions I have given are in some cases approximate only and must 
be verified by additional examples and further .stud\’. There is 
a grand field here for the collector of fossils. 
