5. ExoccExrs. 295 



what produced and pointed, but shorter than the diameter of the eye, 

 which is contained thrice and a third in the length of the head and is 

 equal to the width of the interorbital space, which is slightly concave. 

 The pectoral fin extends to the end of the dorsah Ventral fins midway 

 between the eye and the root of the caudal, extending to the middle 

 of the base of the anal. The dorsal commences opposite the origin of 

 the anal, its anterior rays being rather short. There are thirty-one 

 scales between occiput and origin of the dorsal, and six longitudinal 

 series of scales between the origin of the dorsal and the lateral line. 

 Pectoral uniform blackish, with a small whitish spot near the axil. 

 Ventral white, the middle rays greyish. 

 East-Indian archipelago. 



a. Type of the species, 7| inches long. From Dr. Bleeker's Collection. 

 h-c. Adult. Formosa. From Consul Swinhoe's Collection. 



38. Exoccetus dovii. 

 Exoccetus dowii, Gill, Pfoc. Acad. Nat. Sc. Philad. 1863, p. 167. 

 D. 12. A. 12. L. lat. 50. 

 The height of the body is two-elevenths of the total length (to the 

 fork of the caud^il), the length of the head a little more than one- 

 fifth ; the diameter of the eye is one-third of the length of the head. 

 The pectoral extends to the base of the caudal; ventral inserted 

 nearly midway between the operculum and the base of the caudal, and 

 extending beyond the end of the anal. Pectoral fuliginous, with a 

 light inferior border ; ventral fuliginous ; dorsal and anal colourless. 



{oai.) 



Pacific coast of Central America. 



39. Exoccetus califomicus. 



Exoccetus califomicus, Cooper, Proc. Calif. Acad. Nat. Sc. iii. 1864, 

 p. 93, fig. 20. 



D. 12. A. 10. L. lat. 58. 

 Body much elongate, its depth being one-eighth of the total length 

 (to the fork of the caudal) ; the length of the head is almost one- fifth 

 of the same. The diameter of the eye is less than one-third of the 

 length of the head. The pectoral extends beyond the end of the 

 dorsal, and the ventral to the middle of the anal. The dorsal com- 

 mences in advance of the anal, and is of moderate height. Insertion 

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

 eye. Fins smoky. (^Cooper.) 

 Catalina Island. 



40. Exoccetus brachysoma. 



? Exoccetus commersonii, Lacep. v. p. 402 ; Cuv. Sr Val. xix. p. 102. 

 ? Exoccetus exiliens, Lacep. v. pi. 12. fig. 3 (not Block). 

 Exoccetus brachysoma, Bleck. Nederl. Ttjdschr. Dit'tk. iii. p. 111. 



D. 11-13. A. 8 9. L. lat. 44. 



The height of the body is nearly onc-fit'th of the total length (with- 



