O. EXOCCETUS. 279 



B. Barbels none. 



1. Pectoral with an oblique white band or band-like spot, p. 287. 



2. Pectoral with rounded spots, p. 291. 



3. Pectoral uniforml}' coloured, p. 293. 



I. Ventral Jins shortened, not extending to the anal. 



A. Pectoral Jins shoHetied, not more than half as long as the body (without 

 caudal). 



1. Dorsal Jin of moderate height. 



a. Mandible tvith a cutaneous apjjendage. 



1. Exoccetus micropterus. 



Exocoetus micropterus, Cm. ^ Vcd. xix. p. 127, pi. 563 ; Bkek. Act. 



Soc. Sc. Indo-Nederl. i. Amboina, p. (53. 

 Cypsilurus micropterus, Bleek. Nederl. Tydschr, Dierh. iii. p. 128. 



D. 15. A. 14-16. 



Two short barbels at the symphysis of the lower jaw. Body 

 rounded, its height being rather more than one-sixth of the total 

 length (without caudal^ : the length of the head is two-ninths of the 

 same. Lower jaw prominent, but not produced. The length of the 

 pectoral fin is only two-sevenths of the total (without caudal) ; in- 

 sertion of the ventral midway between the root of the caudal and the 

 axil of the jjectoral. 



Indian and Australian seas. 



a. Adult. Amboyna. From Dr. Bleeker's Collection. 



2. Exoccetus monocirrhus. 



Exoccetus monociiThus, Richards. Ichth. Chin. p. 265. 

 D. 13. A. 13. 

 A single barbel at the mandibulary symphysis, shorter than the 

 head. The pectoral extends a little beyond the base of the caudal. 

 The distance from the end of the snout to the ventrals, when car- 

 ried backwards, does not reach to the middle of the anal. (Rich.) 

 Sea of China ; two inches and a quarter long. 



3. Exocoetus georglanus. 

 Exoccetus georgianus, Cuv. 8f Vol. xix. p. 136. 



D. 13. A 13. 



A single barbel at the symphysis of the lower jaw, extending to 

 the base of the pectoral. The pectoral fins extend nearly to the 

 caudal ; but the ventral is short, and inserted in the anterior third 

 of the length of the body. Dorsal and anal fins low. The length 

 of the head equals the height of the body, and is a little less than 

 one-fifth of the total length. Dorsal and anal black on the posterior 

 two-thirds. ( Vol.) 



Obtained in lat. o° S. and long. 90° E. (Paris). 



Perhaps identical with E. monocirrhus. 



