23,2 Herre: Philippine Eels 177 



a third poorly developed inner row on anterior half; inter- 

 maxillary plate with three larger teeth in a single row, the 

 first one the largest. 



Skin on dorsal surface between lateral line and dorsal fin 

 curiously folded and reticulated by longitudinal wrinkles; a 

 double row of four pairs of pores on top of snout, curving around 

 eyes and joining another row on upper lip above rictus; a row 

 of pores also on each side of lower jaw. 



Color in life greenish brown above, pale yellow to gray brown 

 beneath, everywhere thickly sprinkled with minute dark specks ; 

 iris of eyes golden, pupil black. 



Color in alcohol uniform brown, paler on belly, throat grayish 

 brown; fins heavily sprinkled with minute dark dots so as to 

 appear uniform grayish brown. 



The type, Bureau of Science collection No. 9477, is from a 

 collection made at Cavite in 1907. The cotype, No. 9488, I 

 obtained alive in the Tondo market, Manila ; it was brought from 

 some bangos fishpond in Bulacan, along with a large quantity of 

 Synbranchus bengalensis. 



Measurements of Opkichthus manilensis. 



^1 " p^^oT^l 





1 place here tentatively a small delicate eel from Malabon 

 Bureau of Science collection No. 837, until additional materia 

 is available, as I do not wish to multiply new species unduly As 

 yet we know so little of the differences m ophichthyoid eels due 

 to age, and the intermaxillary teeth are so readily broken, that 

 it is unsafe to give new names where we have any reason to 

 believe that two forms might possibly belong together^ 



Depth 55, head 15.7 in length; head 4.89 m trunk; head and 

 trunk together If in tail; eye 2.5 in snout, 14 m ^ «""* 

 acute, pointed, 5.6 in head, pectoral 4; cleft of mouth extends 

 beyond eye and is 2.8 in head; maxillary teeth m one row ante- 

 riorly, in two rows posteriorly; those on vomer m two rows 

 anteriorly, and in one row at back end; teeth m "™^% 

 in one row except that those on front half of left ; side ,are m 

 two rows; there is a row of two tecch on intermaxillary plate. 



