134 FISHES FROM GUAYMAS EVERMANN AND JENKINS. 



15. Opisthonema libertatis (Giintber). 

 Sardina. 



Meletta lihcriaiU fiiinther, Proc. 2ool. Soc. London 1866, 603 {L'lhertad). 

 Chipca Uhertatis rjiinther. Cat. Fishes, 1868, vil, 433. 



OpiHthoncma Ubertate, Jordan & Gilbnrt, J'roc. U. S. Nat. Mns. 188*2, 6-22 {Panama); 

 Jordan, Proc. U. S. Nat. Mns. 188.'), 366 ( Mazntlan ; Panama). 



This species is very abmulant at Guaymas, many specimens being ob- 

 tained, the largest measuring- 8.^ inches in total length. 



The general color is the same as in 0. of/Unmn, the humeral spot is 

 very plain. This species is, however, more elongate, the depth being 

 contained 3 times in the length ; the head is larger and less deep, and 

 is contained 3| instead of 44 in length. 



16. Stolephonis macrolepidotus (Kner »i Steind.). 



Sardina hocnna. 



EngrauUs macrolepidofiis Kner & Steindacbner, Abhandl. Bayer, Akad. Wi.ss., x, 1864, 

 21, PI. Ill, Fig. 2 (Rio Bai/ano ; Pdunmn); (liinther, Cat. Fishes, 1868, vii, 385. 



Slolephorus macrolepidoins, .Jordan, Cat. Fishes, 1885, 37; ibid., Proc. U. S. Nat. Mns. 

 1885,367 {Mazailan ; Panama). 



Very abundant. Great numbers of this species, together with many 

 of Opisthonema Uhertatis^ died in the summer of 1887, and their dead 

 and decaying bodies, washed up along the shore, rendered a summer 

 residence at Guaymas almost unendurable. 



17. Stolephonis opercularis Jordan A. (Jilhert. 



Stolcphorus opercniaris .lordan &. Gilbert, Proc. U. S. Nat. Mas. 1881, 275 (Piinfa, 

 San Felipe, Gulf of California) ; Jordan, Cat. Fishes, 1885, 37; .Jordan, I'roc. II. 

 S. Nat. Mns. 1885, 367 (ditlf of California). 



Less common. Scales 39; anal rays 24; depth 3^^ Body more elon- 

 gate than in S.macrolepidotus, the head much longer, bones less obliquely 

 l)laced — this greater length showing itself in the greater length of the 

 opercles and the greater basal width of the triangle of the cheeks. 

 Body much less comi)ressed and shorter. 



18. Synodus Jenkinsi .Toi'dau & Bellman. 



Synodus jenkinsi Jordan & Bollmau, Proc. U. S. Nat. Mns. 18S'J, 153 (Uff coast of Co- 

 lombia). 



Of this recently described species we obtained two specimens, 72 and 

 200 millimetres in length resjiectively. 



19. Gymnothorax funebris (Ranzaui). 



Sidera castanca Jordnn & Gillicrt, I'roc. U. S. Nat. Mns. 1882, 647 (Mazatlan) ; ibid., 

 1883, 21(1 ; Jonian, Cat. Fishes North Am., 1885, 51 ; Jordan, Proc. U. S. Nat. Mns. 

 1885, 36i> {Mazatlan). 



Three specimens, the largest 38 inches long. The dorsal is very laiuty 



edged with black. 



