THE NAUTILUS. 55 



lecting. One small area revealed excellent specimens of P. (^Syrnola) 

 fusca and producta, with one specimen of winkleyi. At Wood's 

 Hole I found much material of species already recorded and a few 

 of Turbonilla verrilli. I also got a good series of Turbonilla sumneri. 

 Eulima stenostoma and conoidea occur at Wood's Holl, and a few 

 specimens of Tellimya ferruginosa were found at the locality where 

 Verrill located them years ago. While Turbonilla is ordinarily to 

 be found only by dredging, it does occur at some places at low tide. 

 A chance to observe leads me to think it is a burrowing shell, hence 

 collectors will do well to sift sand in seeking this form. Another 

 suggestion for collectors is, watch carefully for Eulima. I accident- 

 ally discovered in sifting that E. stenostoma after being sifted from 

 the mud has a tendency to float on the surface of the water, as does 

 also Solenomya. In working at low tide and sifting there is a tempta- 

 tion to float oflf dead eel grass, leaving the shells at the bottom of 

 the sieve. Watch carefully, lest Eulima floats away. 



A trip made the day before writing this revealed a few Odostomia 

 trifida in the creeks back of Nantasket Beach, Mass, I cannot too 

 strongly urge on field workers the duty of sweeping with a dip-net in 

 places where eel grass abounds, and be sure to take at least an inch 

 below the surface of the mud or sand in which it grows. Shells are 

 abundant there, and occasionally rare forms, Odostomia gibbosa, for 

 example, of which I obtained two more specimens last summer. 



NEW CUBAN UE0C0PTI8 OF THE U. CINEREA GBOUP. 



BY DOCTOR CARLOS DE LA TORRE. 



Urocoptis [Gongylostoma) cinerea Pfr. Plate vi, figs. 14, lo. 



This species has hitherto been known only from the original de- 

 scription in the Conchylien Cabinet and its copy by Pilsbry in the 

 Manual, xv, page 273. The exact locality of its occurence in Cuba 

 has also been unknown, collectors apparently having missed it. 

 In my recent conchological excursions through the central part of 

 the island I obtained it both in its typical form and through a series 

 of varieties and mutations which appear to define a natural group 

 containing a number of species and subspecies. 



Specimens agreeing closely with Pfeiffer's description generally 



