122 



6. Linea lateralis 58 60, 13 scales between lateral line 



and dorsal ......................... Th. thynnoides p. 122. 



c. Linea lateralis 65 75, 16 17 scales between lateral 



line and dorsal ...................... Th. polylepis p. 123. 



i. Thynnichthys vaillanti n. sp. 



Thynnichthys thynnoides Vaillant, Notes Leyden Mus. XXIV. 1902, p. 102 

 (nee Bleeker). 



D. 4 .8; A. 3.5; P. 1.17; V. 1.8; L.I. 47; L. tr. 





Height 3, 3.7 3.9 in length with caudal. Head 3 3.2, 4 

 in length with caudal. Eye 4.4 5, shorter than snout, nearly 

 twice in the strongly convex interorbital space. Origin of 

 dorsal opposite to iith 1 2th scale of lateral line, much nearer 

 to snout than to root of caudal, separated by 19 20 scales 

 from occiput. Dorsal concave, its second branched ray opposite 

 to origin of ventrals, its height somewhat less than length of 

 head. Anal concave, its height equal to length of snout and 

 eye. Pectorals and ventrals nearly equal. Ventrals surpassing 

 anus. Pectorals about 2 / 3 length of head. Caudal bifurcate, 

 somewhat shorter than head. Least height of caudal peduncle 

 i ! / 2 times in its own length, surrounded by 27 scales. Silvery, 

 upper surface dark. Fins, at least distally, dusky. Length 264mm. 



Habitat: Borneo (river Mahakam: Tepu, Kota Bangun!). 

 VAILLANT 1. c. has already observed the difference in the 

 number of scales in his specimens and in Th. thynnoides. 



2. Thynnichthys thynnoides (Blkr.). [Fig. 56, p. 121]. 



Leudscus thynnoides Bleeker, Nat. Tijdschr. Ned. Indie III. 1852, p. 599. 

 Thynnichthys thynnoides Bleeker, Ichth. Arch. Ind. Prodr. II. Cyprini, 1860, 



p. 408. Atl. Ichth. III. 1863, p. 130. 

 Thynnichthys thynnoides Gunther, Cat. Brit. Mus. VII. 1868, p. 158. 



13 



D. 3.8(9); A. 3.5; P. 1.1718; V. 2.8; L.I. 5860; L. tr.j_. 



I2 



Height about 3.2, somewhat more than 4 in length with 

 caudal. Head 3.23.4, 4 4.3 in length with caudal. Eye about 

 4, shorter than snout, nearly twice in the strongly convex 

 interorbital space. Origin of dorsal opposite to 14 th or I5*h 

 scale of lateral line, much nearer to snout than to root of 

 caudal, separated by about 30 irregular rows of scales from 

 occiput. Dorsal concave, its second branched ray opposite to 



