OLIGODON 



151 



of the types is anomalous with respect to that character. This 

 question will not be satisfactorily settled until the types, or a 

 series of specimens from both type localities, can be compared. 

 From 0. notospilus it differs in coloration and markings, the 

 former having eighteen instead of eleven spots. 



Table 27. — Measurements and scale counts of Oligodon iwahigensis 



Griffin. 



Locality. 



Iwahitj, Palawan^ 

 do 



Collector. 



W. Schultze - 

 C. H. Lamb .- 



Length. Tail, 



324 

 330 



mm. 



57 

 60 



R 16, type 

 R 923. type 



Bureau of Science. 

 Do, 



OLIGODON SCHADENBERGI Boettger 



Oligodon schadenbergi Boettger, Abh. Mus, Dresden 7 (1894-95) 4; 

 Griffin, Philip. Journ. Sci. § D 6 (1911) 260. 



Description of .species. — (After the type description.) From 

 Oligodon vertebralis Giinther, of South Borneo, it is distin- 

 guished by a shorter, blunter head ; by a frontal two and a half 

 to three times as wide as the supraocular ; by a smaller loreal ; 

 and by the internasal suture which is distinctly shorter than the 

 prefrontal suture; the ventral counts are smaller (145-147 

 as against 154) and the subcaudals are fewer (39 as against 

 54). Head short, snout blunt; nasal large, divided; part of 

 rostral visible above about as long as prefrontal suture; in- 

 ternasal suture considerably shorter than prefrontal suture ; 

 frontal somewhat longer than its distance from end of snout, 

 somewhat shorter than parietals, broadly hexangular, at least 

 two and a half times wider than supraocular ; a small trape- 

 zoidal loreal; 1 preocular, and 2 postoculai^s ; 7 upper labials, 

 third and fourth entering eye; 4 lower labials touching first 

 chin shields, which are almost twice the length of second; 

 scales in 15 rows; ventrals, 145 to 147; anal divided; subcau- 

 dals, 38 or 39. 



Color. — Above dark gray strongly contrasted with the orange- 

 colored underside; marked as Oligodon bitorquatus Boie, with 

 very small, black-edged spots in a netlike pattern ; head yellowish 

 brown with two broad crossbands (as in 0. vertebralis Giinther) ; 



