DR. P. P. CARPENTER ON THE SHELLS OF PANAMA. 19 



291. Eulima recta. The type is a very good species of Leio- 

 straca ; but I doubt its identity with the Cumingian specimen, with 

 which the Mazatlan shell, M. 550, was compared. It most resembles 

 the' I/, linear is, M. 554, with which it agrees in divergence and 

 general shape ; but that is very much smaller, with the upper whorls 

 more tumid. In the Professor's type of L. recta, I searched in vain 

 for traces of the " two brown spots." They were probably thrown 

 by defective light. The " two opaque spiral bands " are simply the 

 effect of the suture, and the previous whorl showing through. For 

 the Mazatlan shell, M. 550, I propose the name of L. involuta. 



292. Eulima solitaria. This also is a Leiostraca, not " 1 Sty- 

 lifer," and accords exactly with the Leiostraca, sp. ind. a, M. 552, 

 but not with the supposed L. solitaria, M. 55 1 . The latter agrees 

 in shape with the unique Panama shell, whorl for. whorl ; but its 

 base and labrum are much more produced anteriorly. For this rea- 

 son, it may be known as L. producta. 



293. Pyramidella, sp. ind. This is probably the Obeliscus de- 

 scribed in Maz. Oat. no. 486. 



294. Pyramidella conic a = Obeliscus conicus, C. B. Ad., not 

 M. 486. 



295. Natica chemnitzii=N. maroccana, M. 570. The Professor 

 first labelled these shells " N. ? maroccana, Chem.," but crossed it off 

 in pencil. Another tray appeared (without number) labelled "luni- 

 fasciata, Lam." They all belong to the large West Coast form of 

 maroccana. [N.B. The shells described in P. Z. S. as " var. call- 

 fornica," on the authority of the late Mr. Nuttall, are (with others 

 from the same source) undoubtedly from the Sandwich Islands. 

 The Pacific specimens (of which I have examined many thousands, 

 brought by Comm. Wilkes's E. E.) present a very different type from 

 those of the west coasts of Africa and America ; but are regarded 

 by Mr. Cuming as only a local variety.] 



296. Natica ? lurida. These shells are simply a pale variety of 

 N. maroccana. 



297. Natica otis, C. B. Ad. (not Brod. & Sby.). These shells 

 appear to be the young of Polinices " salangonensis," P. 298. 



298. Natica 1 salangonensis. I had no opportunity of comparing 

 this Polinices with the species of Recluz. 



299. Natica souleyetiana. The shells closely resemble N. ma- 

 roccana, but with a larger umbilicus. 



300. Natica 1mrginea y C. B. Ad. (not Re'cl.) = Polinices uber, 

 M. 576. 



301. Natica, sp. ind. a. There is no ticket answering to this 

 number, which was probably intended for the N. maroccana t var. 

 " unifasciata." 



302. Natica, sp. ind. b. The shells are marked e, and are the 

 young of Polinices uber, P. 300, M. 576. 



13 193 



