1884.] NATURAL SCIENCES OP PHILADELPHIA. 223 



The figure and description of Ranzani represents this species 

 much better than H. roherti. We therefore retain for it his 

 original name. H. richardi Cuvier & Valenciennes is evidently 

 the same, and H. picorti is at least very similar. Gill's Hypo- 

 rhamphus tricufipidatus is not very satisfactoril}' described, but 

 as its author afterwards refers to it as probably identical with H. 

 richardi^ and as the description and locality" best fit that species, 

 we have so considered it. 



Our Havana specimens leave no doubt that H. fasciatus and its 

 synonym, H. poeyi, are based on this species. Its lower jaw is, 

 however, longer than Poey describes, and but for this Dr. Giinther 

 would evidently have referred Poey's description to H. unifas- 

 ciatus. Specimens collected by Captain Dow, at Havana, show 

 that this is one of the species found on both sides of the isthmus. 



2. Hemirhamplius roberti. 



HemirhampTius roberti Cuvier & Valenciennes, Hist. Nat. Poiss., xix, 

 1846, 24 (Cayenne) ; Giinther, Cat. Fish. Brit. Mus., vi, 1866, 363 

 (New Orleans). 



HemirhampJius unifasciatus Cope, Proc. Acad. Nat. Sci. Phila., 1870, 

 119 (Newport, R. I. ; Jordan and Gilbert, Proc. U. S. Nat. 

 Mus., 1878, 383 (Beaufort, N. C), no description; Goode, Pioc. U. 

 S. Nat. Mus., 1879, 116 (Name only) ; .Jordan, Proc. U. S. Nat. 

 Mus., 188D, 20 (San Sebastian River, Fla.) ; Jordan, Proc. U. S. Nat. 

 Mvis., 1880, 22 (St. John's River, Fla.), no descriition ; Jordan and 

 Gilbert, Pioc. U. S. Nat. Mus., 1881, 274 (Guaymas) ; Jordan and 

 Gilbert, BuU. U. S. Fish Comm., 1882, 106 (Mazatlan) ; Joidan 

 and Gilbert, Proc. U. S. Nat. Mus., 1882, 588 (CharLston, S. C.J ; 

 Jordan and Gilbert, Proc. U. S. Nat. Mus., 1882, 356 (Cape San 

 Lucas) ; Jordan and Gilbert, Proc. U. S. Nat. Mus., 1882, 262 

 (Ptnsacola, Fla.); Goode and Bean, Proc. U. S. Nat. Mus., 1882, 

 389 (Gulf of Mexico), no description ; Jordan and Gilbert, Syn. 

 Fish. N. A., 1882, 376. 



HaMtat.—Eoih. coasts of America, chiefly north of the tropics : 

 Beaufort ; Charleston ; Pensacola, San Sebastian River ; Cedar 

 Keys ; New Orleans ; Cayenne ; Mazatlan ; Guaymas ; Cape San 

 Lucas. 



All the specimens of Hemirhamphiis thus far taken on the 

 Atlantic Coast of the United States, north of the Florida Keys 

 (except one of H. pleii), belong to a species differing from the 

 West Indian unifasciatus, in the slenderness of body and in the 

 greater length of the lower jaw. This is evidently the H. roberti 



