130 FUSID^. 



canal, with an expanded or trumpet-shaped opening; proboscis 

 exceedingly long, measuring nearly two inches even when 

 contracted after the death of the animal ; tentacles conical, 

 rather short, and close together, with bluntly pointed tips ; eyes 

 small and black, seated on long stalks, about half-way up the 

 tentacles ; foot lanceolate, thick, rounded and double-edged in 

 front ; tail either pointed or blunt and somewhat truncated. 



Subfamily FASGIOLARIINjE. 



Fasciolaria, Lam. 



Etym Fasciola, a band. Syn. — loeranea, Raf. 



Bistr. — 14 sp. Tropical and Subtropical, world-wide. F. 

 distans^ Lam. (xlviii, 85). F. aurantiaca^ Lam. (xlviii, 86). 

 Fossil, 30 sp. U. Cretaceous — . 



Shell fusiform ; spire acuminated ; aperture oval, elongated ; 

 canal open, moderate in length, nearly straight ; columella 

 smooth, with a few oblique plaits at the fore-part ; outer lip 

 internally crenate. 



The animal of Fasciolaria does not differ essentially from that 

 of Fusus, nor do we find very much difference in the shells ; the 

 usually shorter spire, more swollen body-whorl, wider and shorter 

 and flexuous instead of straight canal, and the oblique plaits 

 near the fore-end of the columella, are the chief distinguishing 

 characters. Between Fasciolaria and Fulgur the resemblance is 

 much closer, and, until the dentition of the two groups became 

 known, they were placed close together by systematists ; in 

 Fulgur, however, the scarcely apparent folding of the columella 

 is single, whilst in Fasciolaria it is double, sometimes triple. 

 The Peristerniinae have columellar folds, but these are usually 

 more transverse, are situated higher on the columella, and the 

 shells are much smaller ; indeed one of the characteristics o-f the 

 Fasciolarias is the comparatively large size of the species, F. 

 gigantea, of the southern Atlantic coast of the United States, 

 attaining a length of nearly two feet — the largest of gastiopods. 

 The distribution of the genus is tropical and subtropical, in 

 shallow waters. But few living species are known, to which may 

 be added some fossil forms, commencing with the cretaceous. 

 The operculum is more claw-shaped than that of Fusus, and is 

 rather large, filling the aperture. 



I have figured the nidimental capsules of F. tulipa, Linn. 



(xvii, T). 



TEREBRISPIEA, Courad. Shell of medium size, with spire 

 much produced and canal short ; volutions convex, angular, and 

 strongly spirally ridged ; plaits of columella not exposed exter- 

 nally ; outer lip internally sulcated. F. elegans, Emmons (xlviii, 

 87). Miocene ; Alabama. 



