EDWIN CHAPIN STARKS 49 



rows of scales, while those from the lake are almost entirely colorless in 

 alcohol. 



165. Gerres olisthostomus Goode and Bean. 



Specimens were taken at Natal and Lake Papary. Those from Natal 

 are darker, the young have 4 or 5 narrow vertical cross bands on the middle 

 of the side, and in addition, lighter longitudinal bands following the rows 

 of scales. No trace of cross bands is on the Papary specimens, though the 

 others are evident. 



Family POLYNEMID^. 

 166. Polydactylus vlrginicus (Linnaeus). 



This fish was found in abundance about Natal. 



Family SCI^NID^. 

 167. Cjmoscion microlepidotus (Cuvier and Valenciennes). 



This species is apparently common at Para, as several specimens were 

 collected in the market. 



They agree very well with the description published by Steindachner, 

 but show the following differences. The interorbital space (bone only) is 

 contained from 4^ to 5 times in the head. The maxillary usually scarcely 

 reaches to the posterior margin of the orbit, but in the largest specimens, a 

 foot in length, it reaches to the margin. The vertical fins are covered with 

 small, thin, inconspicuous scales but they can scarcely be said to be thickly 

 covered, not, at any rate, as compared with Cynoscion squamipitmis. 



168. Cynoscion lelarchus (Cuvier and Valenciennes). 



Two specimens were collected at Para. This species resembles Cyno- 

 scion phoxocephahis most closely. The head is more compressed, the caudal 

 is weakly double concave rather than simply concave, the eye is larger, the 

 postorbital part of the head not so long, and the posterior outline of the 

 anal is not so oblique. 



169. Cynoscion phoxocephalus Jordan and Gilbert. 



A single large specimen of this species was taken at Natal. It has been 

 compared with specimens from Panama and no important differences ap- 

 peared. The body and head are a trifle deeper, and it has 23 dorsal rays 

 rather than 21. This form has heretofore been known only from Panama 

 Bay. 



