^^isoi!^'] PROCEEDINGS OF THE NATIONAL MUSEUM. 323 



"Mazatlan Catalogue," as well as iii the Smitbsonlau check list (1860) 

 of west coast shells, has listed this species with Chemnitz's name, and 

 in the Mazatlan sets put up by Carpenter it is so named. In C. B. 

 Adams's Panama shells Gray's name as above is adopted. Tryon gives 

 the geographical range as from " Mazatlan to Panama," but aside from 

 Dr. Jones's shells the national collection contains an example from 

 Payta, which is about 850 miles farther to the south. 



133. Triton gibbosus Brod. 



One good example. 

 Payta. 



134. Triton lignarius Brod. 



One specimen. 

 Manta. 



Dr. Jones's collection gives both this and the preceding species a 

 much more southerly distribution than previously reported. 



135. Ranella ccjelata Brod. 



One specimen badly beach- worn. 

 Dead Man's Island, Bay of Panama. 



136. Solenosteira purpuroides Orb. 



Fusus purpuroides Orb. 

 Purpura fusif oralis Blaiuv. 

 Purpura Orhigniji Reeve. 

 Fusus purpuroides Pbil. 

 Buccinum fusiformis Soul. 

 Fusus fusiformis Hup6 in Gay. 

 Neptunea fusiformis II. & A. Ad. 

 Cuma fusiformis Blainv., Auct. 

 PoUia fusiformis Blainv., Hidalgo. 

 Cuma purpuroides Orb., Tryon. 

 Melongena purpuroides Blaiuv., Tryon. 



Several specimens. 



Pacasmayo ; Payta ; Manta. 



This peculiar form exhibits characters that have heretofore made its 

 generic position somewhat perplexing. Its relations are, however, 

 with a certain group of West American shells that has until recently 

 been included with Adams's genus SiphonaUa. Tryon has removed 

 some of the West Coast species to Melongena. Among these are 

 8. pallida B. & S. and S. anomala Reeve, and he should have added 

 8. modijicata Reeve, if not 8. TccUettii Fbs., of which latter there may 

 be some question; but the others stand or fall by whatever change is 

 made with one. He was on the right track in placing Blainville's 

 fusiformis immediately after and following 2)allid(i in the Manual, for a 

 comparison of several specimens with the large series of pallida- 

 anomala-modificata in the National Museum is convincing and clearly 

 indicates the relationship. These latter have, as Dall* remarks, "been 



* Trans. Wagner Inst., Vol. 3, Part I, page 122, Aug., 1890. 



