174 BULLETIN OF THE 



Muricidea. In the genus Latirus, L. infundibulum Gmelin, L. brevicaudatus 

 Reeve, and L. cayohuesonicus Sowerby are Antillean, the last named being the 

 only one known to reach the Keys. L. maderensis Watson, L. fastigium Reeve, 

 and L. contemptus A. Adams are stated to be West Indian, but I have not seen 

 any authentic specimens of them from that region. 



Family BUCCINID^. 



Subfamily CHRYSODOMINJE. 

 Genus CHRYSODOMUS Swainson. 



Subgenus SIPHO Morch. 



The name Chrysodomus is the first which, according to the rules of nomen- 

 clature, can be properly adopted for the group typified by Fusus antiquus of 

 Lamarck, Neptunea and other names in common use never having been de- 

 fined or diagnosed for this group until long after Chrysodomus had been pro- 

 posed by Swainson. This group has been united with the Buccinidce, and there 

 are many points of resemblance, but it is a question whether it would not be 

 more correctly regarded as a subordinate part of a family which shall include 

 the genus Fusus properly so called, with, on the one hand, Chrysodomus and 

 its allies, and, on the other, Fasciolaria and its allies, each group being rated 

 as a subfamily. Numerous characters link these subfamilies together ; and 

 the features of the dentition, which formerly seemed so remarkable, and which 

 were assigned as a sufficient reason for uniting the group with the Buccinidce, 

 now that we begin to know of the dental characters in a much larger number 

 of species, seem less and less distinctive. 



There are a large number of arctic and archibenthal forms of the Sipho 

 group. None of them are known to inhabit very warm water, where they are 

 replaced by Fusus and Fasciolaria. In the deep water, however, a few mostly 

 small species reach quite far south. A number of interesting forms have been 

 described by Prof. Verrill, while some described from the other side of the 

 Atlantic have turned up here without being at first recognized. Such are 

 Sipho Bocagei Fischer, which has been described by Messrs. Verrill and Smith 

 as Sipho cmlatulus, and of which a specimen 36 mm. long was dredged in 966 

 fms., off Jamaica, W. I., by the Fish Commission. The adult operculum 

 shows that it is not a typical Mohnia, though that appendage is less pointed 

 and acute than in most of the genus Sipho. Another species is the Sipho Sarsii 

 of Jeff"reys, which has been named Fusus ahyssorum by Fischer from the Talis- 

 man dredgings, and Sipho pt^ofundicola V. & S., from the Fish Commission 

 dredgings. What seems to be a very slender varietj'' of this species was also 

 obtained at the same station off Jamaica, and very young specimens off the 

 Floridian and Georgian coast. 



