318 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.54. 



species formerly called Surcula cancellata Carpenter, inermAs Car- 

 penter, etc., though with much less elaborate ornamentation appear 

 to be related to the Eocene fossil and may tentatively be referred to 

 the same group. At all events they can not be comprised in Surcula 

 as properly restricted. I may note that Conrad's species was very 

 insufficiently figured by him. 



Genus ANCISTROSYRINX Dall, 1881. 



This group, which has a wholly superficial resemblance to Colum- 

 harium, is an evident development from Cochlespira Conrad, 1865, 

 of the Eocene. It should be stated, however, that some wholly in- 

 congruous species have been referred to this section by authors un- 

 familiar with the original type, A. elegans, which is figured in Dr. 

 A. Agassiz' Three Voyages of the Blake (vol. 2, p. 66, fig. 282, 1888). 

 The distinctions which may serve to retain Ancistrosyrinx as a sec- 

 tion of Cochlespira are recorded in Bulletin Museum of Compara- 

 tive Zoology (vol. 43, p. 257, 1908). Candelabrum Dall, MS. not of 

 Blainville, is a synonym. 



Genus GEMMULA Weinkauff, 1876. 



This section of Turris with short canal and beaded or rugose anal 

 fasciole was named without a designated type, but, in 1896, Cossmann 

 selected Pleurotoma gemnmata Hinds. The section Hemipleurotoma 

 Cossmann, is regarded as synonymous by Casey. 



There is a numerous group of abyssal Turritidae with a sculpture 

 somewhat like that of Geimnula but covered with a greenish perios- 

 tracum, the shell of a chall^ consistency, the outer lip thin and 

 simple instead of internally thickened and lirate as in PI. gemnmiata. 

 These differences seem to be of at least sectional value and the group 

 may be named Cryptogermna with Gemnrmla benthina Dall, 1908, as 

 type. The aspect of these shells suggests relationship with Antiplanes, 

 but these features may be due to similar influences of the deep-water 

 environment. The universal erosion, even. in the youngest living 

 specimens, prevents us from knowing the nuclear characters. 



Genus BELA (Leach MS.) Gray, 1847. 



Iredale reviewed this genus in 1915 in the Proceedings of the 

 Malacological Society of London, and as the type of Bela selected 

 by Gray himself is the same species as the type of Mangelia Eisso, 

 there is no question but that the name must be abandoned. 



The next name in order is Lora Gistel, 1848, type Tritonium viridu- 

 lum O. Fabricius {'prohRh\j= Bela exarata Moller) . This is followed 

 by Oenopota of Morch, 1852, who designated no type. Onopota., H. 

 and A. Adams, 1858. is synonymous. 



