240 LIZARDS OF THE PHILIPPINE ISLANDS 



Remarks. — This species, of which no specimen is at hand, may 

 be readily distinguished by the spines on the tail which reach a 

 length of 2 to 2.5 mm. The type, an adult male, was collected 

 at the Mataling River Falls, 430 meters altitude, Cotabato, 

 Mindanao, on December 12, 1908, by Maj. J. M. T. Partello. 



TROPIDOPHORUS RIVULARIS Taylor 

 Plate 21, fig. 2 



Tropidophorus rivularis Taylor, Philip. Journ. Sci. § D 10 (1915) 

 106. 



Description of species. — (From the type, No. 1780, Bureau of 

 Science collection ; collected by E. H. Taylor.) Head scales feebly 

 rugose with grooves between shields ; rostral broader than high, 

 concave above ; frontonasal as long as broad, or slightly broader 

 than long; prefrontals broadly in contact, touching both frenals 

 and first superciliary; frontal elongate, equal to or slightly 

 narrower than supraocular region, longer than its distance to 

 end of snout, equal to length of frontoparie- 

 tals and interparietals together, in contact 

 with three anterior supraoculars; first su- 

 praocular much longer than wide ; fifth and 

 last small; frontoparietals distinct; inter- 

 parietal small, followed by a narrow, 

 elongate scale completely separating the 

 parietals their entire length; nostril in 

 single nasal (in some specimens nasal 

 partially broken) ; two frenals, latter large, 

 separated from labials, the back part 



Fig. 44. Tropidophorus ri- -, , . t j_ • j 



vuiaris Taylor; a. head, dopresscd m a vcry distmct groove run- 

 doTsai view ; b, head, lateral niug diagonally lu f ront of eye ; ten super- 

 ^'^^ ' ^ ^' ciliaries, first two very large, last two 



behind fourth supraocular which borders orbit; temporals not 

 much enlarged, those bordering parietal elongate, largest being 

 midway between eye and auricular opening ; eight upper labials, 

 sixth and seventh largest, below eye ; a deep groove above labials 

 and a series of five or six small scales inserted, separating 

 second f renal from labials; mental small, followed by a large, 

 unpaired postmental and three pairs of chin shields, first two 

 in contact; four lower labials, second much elongate; thirty to 

 thirty-two rows of scales around middle of body ; scales on neck 

 and sides of body and tail keeled ; keels on back forming a longi- 

 tudinal line, those on sides diagonal lines; scales on underside 

 of neck, legs, and tail smooth; scales on back little larger than 



