204 SNAKES OF THE PHILIPPINE ISLANDS 



BOIGA ANGULATA (Peters) 

 Plate 26, figs. 1 to 3; Plate 27 



Dipsas {Dipsadumorphus) angvlata PETERS, Mon, Berl. Ak. (1861) 



688; BOETTGER, Her. Senck. Nat. Ges. (1886) 113; (1892) XLIX. 

 Dipsas (Eudipsas) gwiraonis * Steindachner, Novara, Rept. (1867) 



75, pi. 3, figs. 9, 10; Boettger, Ber. Senck. Nat. Ges. (1886) 113; 



F. MiJLLER, III. Nacht. Cat. Herp. Samml. Basel Mus. (1883) 18; 



Fischer, Jahrb. wiss. Anst. Hamburg 2 (1885) 81. 

 Dipsadomorphus angulatus Boulenger, Cat. Snakes Brit. Mus. 3 



(1896) 75. 

 Boiga ayigidata Griffin, Philip. Journ. Sci. § D 5 (1910) 213; § D 6 



(1911) 263; Taylor, Philip. Journ. Sci. § D 12 (1917) 366. 



Descrvption of species. — (From No. 271, Bureau of Science 

 collection ; collected on iVTount Marapara, Occidental Negros, 

 September, 1909, elevation, 715 meters, by F. W. Foxworthy.) 

 (Adult male.) Head short, rather thick, but little longer than 

 wide; supraocular region prominent; diameter of eye minutely 

 shorter than its distance from end of snout ; rostral distinctly 

 broader than high, scarcely visible from above, forming its 

 longest suture with nasal ; internasals small, their surface round- 

 ing, truncate anteriorly, broader than long; prefrontals broader 

 than long, with a distinct depression at posterior end of their 

 common suture; frontal as long as wide, slightly shorter than 

 its distance from end of snout, a little wider than supraoculars, 

 not in contact with preocular, its anterior suture forming a 

 straight line ; parietals slightly longer than broad, a little longer 

 than frontal, in contact with 1 postocular, their edges irregular ; 

 nasal large, followed by a very small loreal, higher than wide; 

 1 preocular, elongate, wider at top than bottom; 2 postoculars, 

 upper largest ; temporals 2 -f 2, the upper anterior touching both 

 postoculars; 8 upper labials, third, fourth, and fifth entering 

 eye; mental as wide as rostral, very short; 10 lower labials, 

 5 touching first chin shields, which are much longer and wider 

 than posterior pair; scales in 19 rows, smooth, distinctly an- 

 gular on body, with the median row enlarged; median laterals 

 very small ; scales on neck much elongate, narrow, and pointed ; 

 ventrals, 267; anal single; subcaudals. 152; body very slender, 

 compressed; neck very long, extremely narrow, less than one- 

 third the width of head. 



Color in alcohol— Above a light yellow brown, with a Inrge 

 series of dim, darker brown, transverse bands or blotches which 

 widen laterally and are discernible on belly; a series of large 

 lighter spots along edges of ventrals ; belly strongly marked with 



^*I follow Boulenger in regarding this a synonym of Boiga angidata. 



