376 CARCHAHIID^. 



A short labial fold on both jaws. Teeth |f , the upper oblique, ser- 

 rated on the outer margin only ; the lower much smaller, erect, 

 narrow, on a broad base, not serrated. Gill-openings wider than 

 the orbit. Pectoral fin pointed, falciform, extending to below the 

 middle of the dorsal. Second dorsal two-thirds the size of the first, 

 and much larger than the anal. Length of the caudal equal to the 

 distance between the two dorsals. 



Java, AmbojTia. 

 a. One of the typical specimens. From Dr. Bleeker's Collection. 



2. Hemigaleus macrostoma. 



Hemigaleus macrostoma, Bleek. I. c. fig. 10 ; Duvih-U, I. c. 

 Chaenogaleus macrostoma, Gill, Ann. Lye. Nat. Hist. New York, vii. 

 p. 411 (name only). 



Spiracle somewhat larger than other pores. Length of the prae- 

 oral portion of the snout equal to the width of the mouth. A short 

 labial fold on both jaws. Teeth |4 ; the upper oblique, rather nar- 

 row, with several coarse denticulations on the outer side of the 

 base ; the lower not serrated, still narrower, sHghtly oblique, the 

 anterior erect. Gill-openings wide, much wider than the orbit. 

 Pectoral fin somewhat pointed, extending beyond the middle of the 

 iorsal fin. Second dorsal fin two-thirds the size of the first, and 

 much larger than the anal. Length of the caudal fin equal to the 

 distance between the two dorsals. 



Java. 

 «. One of the typical specimens. From Dr. Bleeker's Collection, 



3. LOXODON. 



Loxodou, Mitll, 8f Henle, p. 61. 



The first dorsal fin opposite to the space between the pectorals and 

 ventrals, without spine. Caudal fin with a single notch. A pit on 

 the tail, above and below, at the commencement of the caudal fin. 

 Membrana nictitans present ; pupil of the eye rounded. A minute 

 spiracle behind the eye. Mouth crescent-shaped. Teeth subequal 

 in both jaws, oblique, with a notch on the outer margin, without 

 serraturc or denticulations. 



Indian Ocean. 



1 . Loxodon macrorhinus. 

 Mull. S( Henle, p. <51, pi. 26. 



Snout long, the length of the prasoral portion being considerably 

 more than the width of the mouth. Nostrils much nearer to the 

 mouth than to the end of the snout. A very short labial fold round 

 the angle of the mouth. Teeth .^g. The first dorsal fin rather 

 nearer to the root of the ventrals than to that of the pectorals. The 

 eccond dorsid fin very smidl. only half as long as, and situated en- 



