244 EMBIOTOCID^. 



jaw terminating in a long, pointed, skinny appendage ; opercles and 

 cheeks scaly ; scales of moderate size ; lateral line continuous. Dorsal 

 spines numerous, flexible. The dentigerous plate of the lower pha- 

 ryngeal is very narrow. 

 King George's Sound. 



1. Siphonognathus argyrophanes. 



Richards. I. c. p. 238. pi. 6. 



D. |. A. 14. L. lat. 105. L. transv. 3/12. 



A brownish- violet band along the median line of the back ; another 

 from the snout, through the eye, to the tip of the caudal fin, which is 

 lanceolate ; a silvery band along and below the brown lateral one. 



King George's Sound. 

 a. Fine specimen. Presented by the College of Surgeons. — Type of 

 the species. 



in referring it to the same family witli the other Labroids." Neither Odax nor 

 Siphonognathus appear to be known to Mr. Gill from autopsy, otherwise he cer- 

 tainly would not have endeavoured to separate them into two families, wliatever his 

 views of a "family" in Iclithyology may be. Odax and Siphonognathus are (to 

 give an instance with which Mr. Gill may be more familiar) as closely and natu- 

 rally allied as Sus and Babirussa. 



Fam.3. EMBIOTOCID^. 



Holconoti seu Embiotocoidse, Agass. Am. Journ. xvi. 1853, p. 3S3. 



Body compressed, elevated or oblong, covered with cycloid scales. 

 Lateral line continuous. One dorsal fin, with a developed spinous 

 portion, and with a scaly sheath along the base, which is separated 

 by a groove from the other scales ; anal with three spines and nume- 

 rous rays. Ventral fins thoracic, with one spine and five soft rays. 

 Teeth in the jaws small, palate smooth. The lower pharyngeal bone 

 triangular, simple. Branchiostegals five or six ; gills four, pseudo- 

 branchiae well developed ; au'-bladder large, simple. Stomach with- 

 out csecal appendage, pyloric appendages none. Viviparous. 



Vertebrae 17/20 (Ditrema ar/r/regatum). 



North Pacific. 



Synoj)sis of the Genera. 



Dorsal spines 7-11 1. Ditrema, p. 245. 



Dorsal spines 16-18 2. IIysterocakpus, p. 251. 



