late fonn , with thé broader part in front of and on a higher level than the eye , and witli thé apex extending downwards and out- 
wards to the supraorbital margin. The lips are metnbranous , the under one reverted over the lower jaw , which is very little shorter 
than the upper. The teeth are ali blunt and minute , yet there îs a perceptible différence in their length. Each branch of the 
upper jaw carries a sériés of excessively fine almost setaceous teeth , which under the symphysis become crowded and form a smali 
triangular figure. The base of both triangles is bordered by three teeth larger than the rest, and separated by a naked longitudinal 
interval. The palatal teeth are longer than the preceding, and are placed in a single close sériés, uninterrupted on the vomer. The 
teeth of the lower jaw are a little stronger than the palatal , and appear truncated ; both branches carry a single sériés ; both coalesce 
on the symphysis where they expand in a semilunar band , three or four teeth deep. The lax undivided giil-membrane .... extends 
to the .... origin of the latéral line.. . . . The latéral line is a groove .... The greatest vertical diameter, at the occiput, is contained 
3 ! / 2 times in the length of the head; at the anus 4 i/ 2 . The length of the tail varies from about i/ 5 to 1 / 6 of the total. . . . Themem- 
branous dorsal commences opposite the anus, but is not distinct on the anterior third of the tail. The anal resembles the dorsal* 
the height of either scarcely exceeds J / 4 of the vertical diameter at the anus. Both unité with the short pointed caudal, which contains 
ten minute, pointed, simple rays. — (Young?) Head above and back impure lake coloured with livid reflections, lighter on the sides 
and abdomen; throat pale livid; dorsal-, caudal- and anal-membranes pale carminé. B. 6. Length 6% inch.” 
Syn. Ophisternon caligans Blkr, Enum. Spec. Pisc. Arch. Ind. p. 180; Belut Ind. Pinang. 
Idab. Pinang, in mari. 
Rem. R paraît qu’en effet le Synbranchus caligans est d’une espèce distincte du Synbranchus 
bengalensis, mais le seul individu observé par Cantor appartient probablement à un âge peu 
avancé, et il est probable que les adultes ne présentent plus les mêmes proportions de la tête et 
de la hauteur du corps. Ce qui paraît distinguer surtout le caligans des autres espèces c’est la 
large ouverture branchiale qui monte des deux côtés jusqu’à l’origine de la ligne latérale. La 
figure que j’en donne sur la planche 188 n’est qu’une copie de celle de Cantor. 
