lOO TRANSACTIONS OF THE WAGNER FREE 



Vasum haitense Sowerby var. engonatum Dall. 

 Turbinellus haitensis Sowerby, Geol. Journ. VI. p. 50, 1850; Guppy, Quart. Journ. Geol. 



Soc, Nov., 1876, p. 523, pi. xxix. fig. 3. 

 ? Vasum tuberculatum Gabb, Geol. Santo Domingo, p. 218, 1873. 



Lower Miocene of Santo Domingo (?) ; Alum Bluff (lower bed), Chatta- 

 hoochee River, West Florida; also the equivalent beds in the vicinity of Bailey's 

 Ferry on the Chipola River; also the Miocene of White Beach, Little Sarasota 

 Bay, South Florida. 



This form is perhaps the ancestor of V. cestus Brod. and V. mwicatiim 

 Born. V. haitensis Sowerby is closely related ; it resembles V. etigonatiim in 

 the flatness of the spire for the last three or four whorls, but was referred by 

 Gabb to a variety of w/«7i:rt/?/7«, which other details indicate not to be the case. 

 V. haitensis has fewer spines and a more elevated and acute apex than the 

 form now under consideration. 



V. engonatu7n differs from V. muricatum when adult in having the suture 

 appressed closely to the angle of the preceding whorl ; in its less promi- 

 nent apex ; in its finer and much more numerous spirals ; in its larger, 

 more prominent and conical spines, which are less by one or two in number, 

 on the angle of the last whorl ; in its single series of very large and conical 

 spines anteriorly (cestus, nmricatjim, and haitense have two or even three series) ; 

 in its more prominent siphonal fasciole enclosing a larger umbilical depression ; 

 and in its broader pillar and more triangular form. In V. cestus the spines are 

 blunter and the spirals still coarser than in V. muricatum. Alt. of shell 96.0 ; 

 diameter about 94.0 ; alt. of aperture 80.0 mm. There are three or four 

 plaits on the pillar, the posterior plait much larger than the others. 



V. tuberculatum Gabb is a remarkable form, with few enormous spines, 

 bearing much such a relation to haitense as haitense does to the present va- 

 riety. Without a connecting series I should hesitate to consolidate them, as 

 Guppy has done. 



Family FASCIOLARIID^. 

 Subfamily FASCIOLARIIN^E. 



There is no doubt that in the beginning of the Tertiary this family was 

 not developed sufficiently to be separated from the Volutidce, the connecting 

 links which then existed rendering it impracticable to draw family distinctions 

 between the then nascent groups. But with the increase in development and 

 the extinction of the connecting forms, in the recent fauna the family rank 

 may be admitted. 



We should not lose sight of the genetic connections in realizing the differ- 

 entiation. 



Genus LIOOHL.AMYS Dall. 

 Liochlamys Dall, Rep. Blake Gastr., pp. 15, 173, 18S9. 

 Mazzalina sp. Heilprin, op. cit. p. 76, 1887. 



Shell resembling a short, globose Fasciolaria with three plaits on the pillar, 



