472 KEPoirr of commissioner of fish and fisheries. 



every day. The darker .specimens are called by the fisherinau Ronco 

 2)rieto, the paler ones Ronco bianco. While in Havana, Professor Jordan 

 took especial pains to select specimens representing every variety of 

 form and coloration in this s])ecies. In the very large collection secured 

 we Und specimens answering* fairly to Poey's serraiitw, alhidum^ acutum, 

 as well as other sjiecimens variously intermediate. A type of Bivmulon 

 ((cnfum sent by Poey to the U. S. National Museum is identical Avith this 

 species, as is also the type of If. chromis Cuv. & Val., preserved in 

 the Museum at Paris. The original type of Desmarest's I>iahasisparra 

 is still preserved in the Museum at Paris. It belongs to the present 

 species, for which it is the oldest name. 



38. HiEMULON SCUDDERI. (Mojarra Prieta.) 



Hanmulon scudderi Gill, Proc. Ac. Nat. Sci. Phila. 1862, 25S (Cape Sau Lucas); Stein- 

 dacliiicr, Ichtb. Beitr., iil, 18, 187"); Jordan & Swain, 1. c, 296; Jeukins & 

 Evcrmaun, 1. c. (Ciuaymas); Jordan & Bollman, 1. c, 1889, 181(Pauama). 



Diaiasls 8cudderi Jordan & Gilbert, Bull. U. S. F. C. 1881 (324), 1882 (107, 110) 

 (Mazatlau, Panama); Jordan &. Gilbert, Proc. U. S. N. M. 1882, 361, 626 

 (Cape San Lucas, Panama). 



Hcemrilon hrevirostrum. Giintlier, Fisbes Centr. Amer., 1869, 418 (Panama). 



Hwmulon imdeciinaie Steindacbuer, Icbtb. Beitr. ill, 1875, 11 (Acapulco, Panama). 



Habitat: Pacific coast of tropical America, Guaymas to Panama. 



Etymology: Named for Samuel H. Scudder. 



This si)ecies is the Pacific r(^presentative of Ha'mvlon parra. It 

 reaches a similar size, is eciually abundant, and passes through a simi- 

 lar range of variations and coloration. Most of the species collected 

 by Prof. Gilbert at Mazatlau and Panama have 11 dorsal spines and 

 corresi)ond to the Ihvmulon mulecimale of Steindachner. Two or three 

 of them have, however, 12 d(usal spines, as in the original types of 

 H. scufhlcri and H. hrcri rostrum. We are unable to detect any other 

 difl'erence of importance among these specimens, and refer all to H. 

 S6'wrf<Zm, regarding it as a si)ecies with the number of spines indifferently 

 11 or 12. No other spe(;ies o\' llwmnlon ever has fewer si)ines than 12. 

 If these should finally prove to be si)ecifically distinct, the form with 

 11 spines should stand as Himudon undecimale, that with 12 spines as 

 llfvmvlon .scuddcri. 



►Specimens are in tlic musenm at ('and)ridge from Lower California, 

 Acajtulco, and Panama. The three s])ecimens from Acapulco have D. 

 XII, those i'unn Panama (types of //. undecimtdt) have D. xi. 



39. H-S3MULON CARBON ARIUM. (Ronco Carbonero.) 



Hcemulon carhonarlum Poey, Memorias de Cuba, ii, 176, 1860 (Cuba) ; Poey, Synopsis, 

 1868, 318; Poey, Enumeratio, 44, 1875; Jordan & Swain, 1. c, 298; Jordan, 

 1. c, 1890,319 (Baliia). 



Habitat: West Indies, south to Brazil. 



Etymology: Carbonarius, coaly, an allusiojj to the common name. 

 This species is common at Havana, wheie it is known as ronco car- 

 bonero. It reaches a length of about 10 inches. We have examined 



