ILLUSTRATIONS 13 



12. Ophites subcinctus (Boie) ; drawing of a Palawan specimen; a, 



head, dorsal view; b, head, lateral view; x 2. 



13. Haplonodon philippinensis GrifRn; a, head, dorsal view; b, head, 



ventral view. 



14. Pseudorhabdium oxycephalurn (Giinther) ; after Boulenger; a, 



head, dorsal view; b, head, lateral view; c, head, ventral view. 



15. Pseudorhabdium mcnainarx Taylor; a, head, dorsal view; b, head, 



lateral view; c, head, ventral view. 

 .16. Typhlogeophis brevis Giinther; after Boulenger; head, dorsal view. 



17. Calamaria everetti Boulenger; after Boulenger; head, lateral view. 



18. Psa-rnviodynastes pulverulentus (Boie) ; after Stejneger; a, head, 



dorsal view; b, head, lateral view; c, head, ventral view. 



19. Dryophis preocularis sp. nov. ; drawing of a Polillo specimen; a, 



head, dorsal view; 6, head, lateral view. 



20. Aipysurus eydouxii (Gray) ; after Jan, copied from Wall; a, head, 



dorsal view; b, head, lateral view; c, head, ventral view. 



21. Laticaiida laticaudata (Linnasus) ; after Wall; a, head, dorsal 



view; b, head, lateral view; c, chin. 



22. Laticauda semifasciata (Reinwardt) ; after Wall; a, head, dorsal 



view; 6, head, lateral view; c, chin. 



23. Disteira cincinnatii Van Denburgh and Thompson; after Van Den- 



burgh and Thompson; a, head, dorsal view; b, head, lateral view; 

 c, chin; d, anterior ventrals; e, anal region; /, ventrals. 



24. Disteira ornata (Gray) ; drawing of a specimen from Manila Bay; 



a, head, dorsal view; b, head, lateral view; c, head, ventral view; 

 X 2. 



25. Disteira cyanocincta (Daudin) ; after Wall; a, head, dorsal view; 



b, head, lateral view; c, head, ventral view. 



26. Disteira cyanocincta (Daudin) ; after Jan's D. westennanni; a, 



head, lateral view; 6, head, lateral view (variation). 



27. LapemAs hardwickii Gray; after Giinther; a, head, dorsal view; 



b, head, lateral view; c, chin. 



28. Pelamydnis platurus (Linnseus) ; after Stejneger; a, head, dorsal 



view; b, head, lateral view; c, head, ventral view. 



29. Naja Hannah (Cantor); after Boulenger; a, head, dorsal view; b, 



head, lateral view. 



30. Naja naja miolepis (Boulenger) ; a, head, dorsal view; 6, head, 



lateral view; c, chin; X 1. 



31. Trimeresurus mcgregori Taylor; from the type; a, head, dorsal 



view; b, head, lateral view; c, head, ventral view; X 1- 



32. Trimeresurus flavomaculatus (Gray); after Boulenger's Lachesis 



flavomaculatus ; a, head, dorsal view; b, head, lateral view. 



