INSTITUTE OF SCIENCE, PHILADtLPHIA. 257 



Turbonilla textilis Kurtz. 

 Chemnitzia texlitis Kurtz, Cat. Rec. Mar. Shells N. and S. Car., p. 8, i860. 



Pliocene of the Caloosahatchie beds, Dall ; living at Charleston, S. Car. 

 (Kurtz), and Marco, Florida (Hemphill). 



This species was identified from specimens sent by Kurtz to Stimpson 

 and preserved in the National Museum. The original description would not 

 suffice to discriminate the species from allied forms. The base is sharply de- 

 fined in young shells, and the early whorls have prominent ribbing very close 

 set, so as to almost hide the spiral striation. In older specimens the ribbing 

 is feebler and more distant on the later whorls and not abruptly cut off at the 

 periphery, while the spirals are more evident. It is closely allied to T. multi- 

 costata Ads., which, however, attains a larger size and has less prominent and 

 more uniform ribbing, with the whorls slightly marginated near the suture. 

 The pillar seems to be simple in all the specimens. 



Turbonilla virga Dall. 



T. (viridaria var.f) virga Dall, Proc. U. S. Nat. Mus. vi. p. 332, Dec, 1883. 

 T. virga Dall, Rep. Blake Gastr., p. 336, 1SS9. 



Pliocene of the Caloosahatchie, and living from Hatteras to Key West in 

 2 to 15 fathoms. 



The base of this slender, small species is well defined ; the faint interstitial 

 spiral sculpture is often hardly visible on account of the closeness of the rib- 

 bing. The pillar is simple, but slightly twisted. 



Turbonilla pupoides Orbigny. 



Cheinnilsia pupoides Orb., Moll. Cuba, i. p. 224, pi. xvi. figs. 32, 36, 1841. 



Chemnitzia latior C, B. Ads., Contr. Conch., p. 72, 1850. 



? Turbonilla subcoronata Holmes, Post. -PI. I'oss. S. Car., p. 87, pi. 13, figs. I2a-b, 1859. 



Pliocene of the Caloosahatchie beds ; living at Jamaica, St. Thomas and 

 on the shores of Cuba. 



The fossil agrees exactly with Adams's type-specimens, which differ 

 from Orbigny's figure only in exhibiting a slight constriction in front of the 

 suture, which makes' the ends of the ribs coronate the whorl. But Orbigny's 

 specimen was young and his figures are very formal, and the species are 

 doubtless synonymous. The pillar is straight and simple. 



Orbigny's names all antedate those of Adams, and several of Adams's 

 species are doubtless synonymous, but in the absence of authentic specimens 

 it is impossible to identify them. The figures of Orbigny in most cases are 

 pretentious, but obviously inaccurate. Having made careful comparison with 

 Prof. Adams's types in the Amherst Cabinet, and possessing in the National 

 Museum a number of specimens named by Adams himself, his names can be 

 identified with much more accuracy, while his descriptions are more full, 

 careful and accurate than those of the Mollusques de Cuba. The student who 



