396 PROCEEDINGS OF THE ACADEMY OF [PaRT II 



of little more than two whorls. Another (fig. 17) shows the conic 

 spire usual in the genus. 



Diameter of type 25 mm. 



Many opercula of Turho collected probably belong, at least in 

 part, to this species. Unworn specimens vary remarkably in the 

 degree of callous filling over the nucleus, the number of spiral fur- 

 rows and the amount of granulation; the series forming a transition 

 from the operculum of Senectus to that of Callopoma. It appears 

 likely that several species of Turbo are involved. 



Type no. 2843 A. N. S. P. 



Astrsea domingensis Pils. and Johns. 



Proc. A. N. S. Phila., 1917, p. 184. 



This is perhaps Astralium suhlongispinuni Maury. It resembles 

 A. karlsckmidti in shape, but has more numerous spirals above. 



PHASIANELLIDAE. 



Phasianella affinis C, B. Ad. 



Lacuna punctata Gabb, Tr. Amer. Philos. Soc, xv. 1873, p. 240. 



The umbilical groove appears slightly deeper, its bounding angle 

 shorter than in recent specimens compared; yet the difference is so 

 small that we have no doubt of the specific identity. 



Gabb's type lot, 13 specimens are no. 2820 A. N. S. P. 



Eutropia altispira Gabb is a Naticid gastropod. 



NERITIDAE. 



Smaragdia viiidis (L.) 



Nerita viridis L., Syst. Xat., x, 778. 



Neritina viridis L., Gabb, Tr. Amer. Philos. Soc, xv, p. 242. 



The specimens are all small, up to 3.8 mm. long, and show a trace 



of the green ground color, as well as the linear markings. They are 



more like European than recent West Indian specimens. 



TROCHIDAE. 



Tegula viridula (Gmel.) 



Omphalius viridulus Gabb, Trans. Amer. Philos. 

 Soc, XV, p. 243. 



Calliostoma leve n.n. Text-flg. 32. 



Calliostoma conico Gabb, Tr. Amer. Philos. Soc, 

 XV, 1873, p. 243. Not Trochus conicus Donovan, also 

 a Calliostoma. 



The shell is imperforate and straightl}^ 

 conical. Each whorl has 6 spiral cords, sep- 

 arated by narrow grooves, above the peri- 

 pheral cord. On the upper whorls these ^'^- ^'^- ^"'^^««'«^« ^'''- 



