264 TRACHINID^:. 



Tc. Adtilt female : skeleton. FalMand Islands. Presented by W. 



E. Wright, Esq. 

 I. Adult female. Falkland Islands. Presented by W. E. Wright, 



Esq. — Type of Harpagifer paUiolahis. 

 m, n. Half-grown : bad state. Falkland Islands. From the Haslar 



Collection. 

 o-t. Adult and half-grown : bad state. Cape Horn. 

 u. Intestines of specimen k. 



I may add to the notes on the anatomy of this fish given by Sir 

 J. Eichardson (I. c. p. 12), that the ovaria are separated, of moderate 

 size, bean-like. The urine-bladder is deeply forked. That natu- 

 ralist states twenty-four caudal vertebrae, whilst I find only eighteen. 



Appendix to the TracliinidsB. 



HETEROSTICHUS. 



Heterostichus, Girard, Proc. Acad. Nat. Sc. Philad. 1854, p. 143, and 

 U. S. Pacif. R. R. Exped. Fishes, p. 86. 



The following is the description given by Girard. The place svhich 

 the fish Avill take in the system is not yet sufficiently clear ; probably 

 it is the type of a separate family 



" First dorsal fin very long, the first five anterior rays of which 

 constitute an apparently distinct fin. Anal very long, provided an- 

 teriorly with but few spines. Dorsal and anal extending to near the 

 caudal. Body very compressed and flattened posteriorly. Caudal 

 slender. Ventrals situated in advance of the pectorals. Lower jaw 

 longest ; mouth moderate. Canine teeth in the jaws, viUiform teeth 

 on the vomer and the palatines. Scales \otj small. Lateral line 

 arched above the pectorals. Six branchial rays. Opercular appa- 

 ratus without either spines or denticulations." 



San Diego (California). 



1. Heterostichus rostratus. 

 Girard, I. c. pi. 13. 



D.i. A. 3^. V.1/3. 



The head is rather small and conical. The nose is very much de- 

 pressed and concave. The greatest depth, measured above the pec- 

 torals, is contained five times in the entire length ; the least depth 

 is about a fourth or a fifth of the greatest. The head forms a little 

 less than a fourth of the length. Lower jaw much the longer. The 

 horizontal diameter of the eye is 7| in the length of the side of the 

 head. The first five rays constitute an apparently distinct fin, sub- 

 triangular in shape and much higher than the portion which follows, 

 and which, upon its anterior half, is higher than upon its posterior 

 half. The soft dorsal is short, but high, and in perfect continuity \vith 

 i lie spinous ono. The caudal is slender and forked ; the ventrals are 

 Puite small and slender. Yellowish-broMTi, marbled with darker. 



San Diego 



