46 



PROCEEDINGS OF THE ACADEMY OF 



[1890. 



REMARKS ON UROSALPINX PERRTJGATUS Conr 



M 



BY FRANK C. BAKER. 



This mollusk was described by Conrad in the American Journal 

 of Science, Xew Series, vol. II, 1846, p. 397, as follows : " Fums per- 

 rugatus Conrad. Manatee River. Fusiform, with remote longitu- 

 dinal ribs, and large prominent revolving lines alternating with a 

 fine line ; whorls longitudinally rugose, upjDcr half flat and oblique; 

 aperture rather more than half the length of the shell, purple with- 

 in ; labrum striate ; color of the exterior cinereous. Proportionally 

 wider than F. cinereus, with fewer and larger ribs and lines." 



The only references I have been able 

 to find, which have been made to this shell 

 since the foregoing description, are those 

 by Dr. W. H. Ball in Bulletin No. 37 of 

 the United States National Museum, p. 

 120, and in the Blake Gasteropoda Re- 

 port^ p. 214, in which he says: "There 

 are three American species known to be- 

 long to it ; ( Urosalpinx) N. cinereAis 

 Say, ranging from Massachusetts to Flor- 

 ida ; N. tavqxcensis Conrad, known only 



from the west coast of Florida 



lastly N. 2:>erru(/atus Conrad." 



Among a number of specimens of cin- 

 erexis in the collection of the Academy of 

 Natux-al Sciences of Philadelphia I found several trays of perrnga- 

 tus, and as no really good description, and no figure has been pub- 

 lished of this species, I take this opportunity of redescribing and 

 figui'ing the same. 

 Urosalpinx perrugatus Conrad. 



Shell fusiform, solid, cinereous, under the lens showing a scabrous 

 texture ; whorls six, subcarinated, longitudinally plicate, the folds 

 eight in number on the last whorl, large, rounded ; there are eigh- 

 teen strong, spiral lirse, with fine intervening threads ; aperture ovate, 

 rather more than half the length of the entire shell ; outer lip rounded, 



1 Bulletin Museum of Comparative Zoology of Harvard College, vol. XVIII, 

 pt. 2. 



