101 



A small specimen of 5 I mm. length, from the Island Binongka 

 belongs probably also to H. convexus. It is however disting- 

 uished by two black dermal appendages of 2.5 mm. length, 

 situated on a common base on the chin (Fig. 57 after M. WEBER, 

 Siboga Exp. Fische 1913, p. 133). 



ii. Hemirhamphus russelli C. V. 



Hemirhamphus Russeli Cuvier & Valenciennes, Hist. nat. Poissons XIX. 1846, p. 32. 

 Hemiramphus russelli Cantor, Journ. Asiat. Soc. of Bengal XVIII. 1850, p. 1229. 

 Hemirhamphus Riisseti Karoli Janos, Termes zetrajzi fiizetek V. 1882, p. 36. 



"D. 17; C. i5 3 / 4 ; A. 13; V. 6; P. 12; Br. XIII. 



"The length of the head from the apex of the intermaxillaries 

 is Yo f ^e total measured to the point of the lower, longer, 

 caudal lobe. The length of the lower jaw, from the apex to 

 the angle of the mouth, slightly exceeds the length of the 

 head, varying in different individuals from l / s to l / G of the 

 distance to the point of the lower caudal lobe. The horizontal 

 diameter of the eye is ! / 4 of the length of the head; the 

 distance across the forehead equals i ! / 2 diameter. The depth 

 at occiput slightly exceeds 1 / 2 of the length of the head, and 

 is but 2 / 3 of the greatest vertical diameter of the body, in 

 front of the ventrals. The length of the pectorals is l /' G less 

 than that of the head, which is exceeded by ! / 4 by that of 

 the lower caudal lobe. The upper caudal lobe is 2 / 3 of the 

 lower. The ventrals are placed opposite the posterior third of 

 the distance between the apex of the intermaxillaries and the 

 root of the caudal. Head above and back bluish black; lighter, 

 silvery on the sides above the lateral line; rest of the sides, 

 abdomen and opercles silvery with steel-blue reflections; fins 

 hyaline; marginal half of dorsal and caudal minutely dotted 

 with black; sides of lower mandible black. Iris silvery, orbital 

 margin bluish black." Length 250 mm. [After CANTOR, not 

 seen by us]. 



Habitat: Singapore (KAROLi). Pinang, Pondicherry. 



Note. Nothing is said about the shape of the triangular 

 part of the upper jaw, nor of the position of dorsal and anal 

 fins. It was therefore impossible to give this species a place 

 in our key* 



INDO-AUSTRALIAN FISHES IV* II 



