280 SCOMBRESOCID^. 



b. Barbels none. 



4, Exoccetus brevipinnis. 



Citv. Sf- Val. xix. p. 123. 



D. 12. A. 10. 

 The height of the body is two-thirds of the length of the head, 

 which is two-elevenths of the total (with the caudal). The length 

 of the pectoral is onl}- one-half of the total (without caudal) ; it 

 does not extend beyond the extremity of the ventral, which is short. 

 Dorsal fin with the rays of nearly equal height. Pectoral uniform 

 brownish. ( Val.) 

 New Ireland. 



2. Dorsal Jin elevated. 

 a. Mandible tvith a cutaneous appendage. 



5. Exoccetus rostratus. 

 D. 9. A. 10. L. lat. 40. 



A single very short barbel at the symphysis of the lower jaw. 

 The height of the body is two-elevenths of the total length (without 

 caudal), the length of the head a little more than one-fourth. 

 Snout much produced, its length being a little more than that of the 

 postorbital portion of the head. Cleft of the mouth directed upwards, 

 subvertical. The diameter of the eye is contained four times and 

 one-third in the length of the head, and is less than the width of the 

 interorbital space, which is flat. The depth of the head equals the 

 distance between the extremity of the snout and the centre of the 

 eye. There are twenty-four scales between the occiput and dorsal 

 fin, and eight longitudinal series of scales between the origins of the 

 dorsal and anal. The dorsal fin commences scarcely in advance of 

 the anal ; it is elevated, its anterior rays, when laid backwards, ex- 

 tending to the caudal. Anal fin low. The lower caudal lobe is not 

 much shorter than the head. The pectoral fin extends to the dorsal, 

 its length being less than one-half of the total (without caudal). 

 The ventral extends to the vent. Dorsal black, with the last ray 

 white ; pectoral black, with the upper and lower rays white ; ven- 

 tral and anal whitish. 



Sandwich Islands. 

 a. Six inches and a half long : has been in chloride of zinc. From 

 the Haslar Collection. 



6. Exoccetus brachypterus. 



Exoccetus brachyopterus, Solander, M.S. ; Richards. Ichth. Cliin. p. 

 265. 



D. 11. A. 14. 

 Two short barbels at the symphysis of the lower jaw (frequently 

 lost *). Ventral fin of moderate length, extending nearly or quite to 



* Solander says : " iu spec, plurimis cirri 0." 



