436 CALIFORNIA ACADEMY OF SCIENCES. 



scaly. Belly and lower parts largely naked, a large patch 

 of scales on cheeks; head otherwise naked. 



Bright blue above, with bright reflections, sides bright 

 silvery; no golden; a narrow brownish streak not quite 

 so wide as pupil from upper part of gill opening to middle 

 of base of soft dorsal. Pectoral tipped with black; axil 

 of pectoral dusky. Upper fins rather dusky, lower white. 

 Dusky on opercle inside and out but without definite 

 spot. 



More elongate than Citula dorsalis, the anterior profile 

 more convex, the base of dorsal and anal more elevated, 

 the caudal scutes stronger and fewer, the ventrals longer 

 though the specimen is larger. Gill-rakers fewer. Pec- 

 toral long and falcate, reaching seventh anal ray. Ven- 

 trals not short, reaching vent. Caudal moderate. 



One specimen obtained, twenty-six inches long. No. 

 1563, L. S. Jr. Univ. Mus. 



We take great pleasure in naming this interesting fish 

 for Mr. Timothy Hopkins, in recognition of his great in- 

 terest in scientific research. 



We provisionally admit Citula and Hynnis as genera 

 distinct from Alectis. No structural characters of im- 

 portance distinguish this group, and all these genera are 

 merely form variations from Caranx. 



92. Vomer setipinnis (Mitchill). 



Recorded by Dr. Gilbert as common at Mazatlan and 

 Panama; no specimens, however, were seen by us. It 

 is not unlikely that this species disappears from the coast 

 with the end of the rainy season. 



93. Selene cerstedi Liitken. 



Recorded by Dr. Gilbert as frequently found both at 

 Mazatlan and Panama. One specimen, sixteen inches 

 long, taken by Ygnacio Moreno and sent to us. 



