74 BULLETIN 100, UNITED STATES NATIONAL MUSEUM 



etc.) and characterized by the large size of the pores of the inner 

 face. They were dead and very easy to compare with fossil forms. 

 The colonies are large and irregular which is the usual case when they 

 are able to develop freely. 



After the studies which we have made of Cupuladria, we can now 

 revise the very uncertain bibliography of C canariensis. It is neces- 

 sary to withdraw the following species. 



1. Cupularia stellata Busk, 1854 from the Philippines. Our Cupu- 

 ladria dentijera is very close and differs only in the tuberose inner 

 face. 



2. Cupularia guineensis Busk, 1854, characterized by polygons 

 with tuberose surface decorating its noncostulated inner face. Our 

 Cupuladria liexagona and C. granulosa are very close, but present 

 moreover some constant differences to consider in order to be scrupu- 

 lously exact. 



3. Cupularia guineensis Busk, 1884, from Australia represented by 

 a single specimen and moreover determined doubtfully. The pores 

 of the compartments of the inner face are smaller than in Cupuladria 

 canariensis. As Busk's figure of 1854 does not bear pores at all, we 

 separate this form under the name of Cupuladria intermedia, new 

 name. 



4. Cupuladria guineensis Harmer, 1926. (Siboga p. 266, pi. 91, 

 figs. 5-7.) Differs from C. guineensis Busk s. s. in its opesia, "rounded 

 oval, slightly trifoliate or quadrangular" (and not elongated and 

 elliptical) and in its inner surface, "imperforate or with small pores, 

 even with radial grooves" and not tuberose, without pores and 

 radial costules (words in quotation from Harmer). It differs from 

 Cupuladria canariensis Busk, 1859, in the absence of the large char- 

 acteristic pores on the inner face. It is close to our Cupuladria 

 transversata in the form of the opesium, but as Harmer has not 

 figured the inner face, it is not possible to make an exact identifica- 

 tion. On account of the slight length of the opesia we separate 

 this species under the name of Cupuladria brevipora, new name. 



5. Cupularia canariensis Robertson, 1908. This is a very dif- 

 ferent species which we have already separated under the name of 

 Cupuladria robertsoniae Canu and Bassler, 1923. 



6. Cupularia canariensis Waters, 1886 (fossil from Australia) and 

 1887 (recent from Australia) are doubtful. According to the brief 

 information given by the author, they belong perhaps to Cupu- 

 ladria intermedia, new name. 



The geographic distribution given by Marcus, 1921, is to be entirely 

 revised by a new examination of the specimens not figured. 



Occurrence. — D. 2826, Gulf of California. 



Geographic distribution. — Mediterranean to the 38th parallel. 

 Atlantic: Morocco, Madeira, Canaries, and Liberia; Gulf of Mexico. 



