1 68 



} Hemirhamphiis Btiffonis Hase, Jen. Zeitschr. f. Naturw. Bd. LI. 1914, p. 541 

 (nee C. v.). 



D. 10— II ; A. II ; P. 1.8; V. 1.5 ; L.l. about 48. 



Compressed, the breadth of the body going nearly 1.5 in 

 its height. Height 8.8 — 10.8, 9.8 — 12.2 in length with caudal. 

 Head from tip of upper jaw to branchial opening 2.3 — 2.5 in 

 trunk. Entire head 2 — 2.3, 2.3 — 2.5 in length with caudal. 

 Length of lower jaw beyond extremity of upper jaw 3.8 — 4.5 

 in length, 4.3 — 5 in length with caudal. Eye about twice in 

 postorbital part of head, somewhat less than interorbital space. 

 Triangular part of upper jaw scarcely longer than broad at 

 its base, scaly. Praeorbital rounded in front, one half or nearly 

 two thirds of diameter of eye. Teeth small, in bands of about 

 5 rows in both jaws. Origin of anal below third dorsal ray. 

 Dorsal 2.5 times longer than anal, convex. Fourth, fifth and 

 sixth ray prolonged — at least in males. Sixth, seventh and 

 eighth ray of anal much thickened in males. Pectorals equal 

 to head without snout. Ventrals short, less than half length 

 of pectorals, their origin about twice nearer to base of caudal 

 than to eye. Caudal probably obliquely truncate. Colour of 

 preserved specimens yellowish, with a more or less distinct 

 silvery lateral band, bordered above by a black stripe and 

 most distinct in postanal part of the body. Fins hyaline, caudal 

 and dorsal dusky. Length 156 mm. 



Habitat: New Guinea (Kaiserin Augusta river!). 



6. Zenarchopterus brevirostris (Gthr.) 



Hemirhamphns dispar Kner, Sitzber. Akad. Wien XXXIX. i860, p. 537 (nee C.V.) 

 Hemirhamphus brevirostris Giinther, Cat. Brit. Mus. VI. 1866, p. 274. 

 Zenarchopterus brevirostris Bleeker, Atl. ichth. VI. 1866 — 1872, p. 64. 



D. 10— II ; A. 13; P. 9. 



"Scales large. The length of the head is two-fifths of the 

 total (without caudal), that of the prominent part of the lower 

 jaw one-fifth. Upper jaw as broad as long. The diameter of 

 the eye is one-half of the length of the postorbital part of 

 the head. Ventral considerably nearer to the root of the caudal 

 than to that of the pectoral. The male has the fourth ray of 

 the dorsal fin and the sixth of the anal prolonged and thickened ; 

 the latter, besides, being provided with additional filamentous 

 rays. Caudal rounded. Sides with a silvery band." [After 

 GUNTHER, not seen by us]. 



Habitat: East-Indian Archi-pelago. 



