200 LIZARDS OF THE PHILIPPINE ISLANDS 



the scutes are transversely wider and more numerous. The 

 measurement from snout to vent is 48 millimeters. 



Remarks. — The type and cotype are from the low mountains 

 near Bunawan, Agusan, Mindanao. Both are adult. The 

 species is very rare in this locality, but may occur more fre- 

 quently at higher altitudes. Only these two specimens known. 



Genus DASIA Gray 



Dasia Gray, Ann. Nat. Hist. 2 (1839) 331; Cat. Liz. (1845) 108. 

 Keneuxia Gray, Cat. Liz. (1845) 79. 



Lygosoma sec. Keneuxia Boulenger, Cat. Liz. Brit. Mus. 3 (1887) 

 211; DE RooiJ, Kept. Indo-Aust. Arch. 1 (1915) 198. 



Legs well developed, pentadactyl, overlapping when ad- 

 pressed ; ear opening small ; frontal narrower than supraorbital 

 region ; frontoparietals distinct ; preanals numerous, small ; lower 

 eyelid scaly; digits compressed distally; supranasals present or 

 absent. 



There are two species of Dasia found in the Philippines, both 

 of which are widely distributed forms that vary greatly among 

 themselves. One, Dasia smaragdinum, has a number of recog- 

 nized subspecies ; the other, Dasia olivaceum, which also has 

 much variation, has had no subspecies recognized by the most 

 recent herpetologists. 



Peters described a form from Mindanao, under the name of 

 Euprepes {Tiliqvxi) semicinctus. This form shows differences 

 which distinguish it markedly from the typical Dasia olivaceum 

 (Gray). Gray described a form which he called Tiliqua grisea. 

 In 1915 I described a species from Palawan under the name 

 of Dasia griffini. A careful review of the specimens in the 

 Bureau of Science collection and in my own collection, and a 

 review of the literature on the species has caused me to regard 

 these forms as subspecies of Dasia olivaceum. There are no 

 distinctive variations in the scalation of the head, but there are 

 differences, in color and markings and in the number of scale 

 rows, which warrant separation. In consequence I shall con- 

 sider two subspecies under this species: Dasia olivaceum 

 semicincta (Peters) , and Dasia olivaceum griffini Taylor. 



DASIA OLIVACEUM (Gray) 



Dasia olivacea Gray, Ann. Nat. Hist. 2 (1838) 331; Cat. Liz. (1845) 

 108. 



Euprepes ernestii Dumeril and BiBRON, Erp. Gen. 5 (1839) 696; CAN- 

 TOR, Cat. Mai. Rept. (1843) 47. 



Tiliqua grisea Gray,, Cat. Liz. (1845) 110. 



