442 CALIFORNIA ACADEMY OF SCIENCES. 7O 
The two anal spines united with rest of the fin. No free 
anal spines. Ventral ray really I, 5, the inner ray very 
wide, made up of four branches so that the rays seem 
more numerous; ventral spine obscure. Anal fin short. 
Pectoral fin falcate. Both dorsal and ventral with sheath. 
Soft dorsal and anal low, the last ray slightly lengthened. 
Dr. Gill is probably right in regarding Vematzst7us as 
type of a family distinct from the Carangide. 
Family STROMATEID. 
tor. Rhombus medius (Peters). 
Originally described by Dr. Peters from Mazatlan; not 
seen by Dr. Gilbert or by us. Only the original type in 
the museum at Berlin seems to be yet definitely known. 
Family CHEILODIPTERID. 
102. Apogon dovii Giinther. 
This species was found by Dr. Gilbert at Mazatlan, but 
was not seen by us. 
103. Apogon retrosella Gill, CARDENAL. Plate xxxvii. 
Two specimens of this most beautiful little fish were 
obtained by us with dynamite off the Isla Blanca and 
Creston Islands. Only the very young, found by Mr. John 
Xantus, at Cape San Lucas have been hitherto known. 
Head 2%; depth 27%: scales 3-26-9; dorsal VI-1, 10; 
anal I1, 9; eye 27% in head; maxillary 134; snout 4%; 
interorbital 4; first dorsal 24%; second dorsal 13; caudal 
fa; Pectoral 134; uvemthal 1. 
Body rather plump, not much compressed, the profile 
rising steeply from snout to first dorsal. Caudal peduncle 
long and strong; eye very large; mouth large, oblique, 
the maxillary opposite posterior margin of pupil. Teeth 
small, the outer scarcely enlarged. Premaxillary pro- 
tractile; no supplemental maxillary. 
