176 BULLETIN 199, UNITED STATES NATIONAL MUSEUM 



12. An accessory scute between frontoparietal and parietal. 



deppii cozumelus (p. 179) 

 No accessory scute 13 



13. Femoral pores usually 17 or fewer (81-82 percent) 14 



Femoral pores usually 18 or more (94 percent) deppii deppii (p. 178) 



14. Lower preocular generally (79 percent) in contact with loreal; a broad mid- 



dorsal light band deppii lineatissimus (p. 179) 



Lower preocular generall (73 percent) not in contact with loreal; narrow light 

 stripes on back as on sides deppii oligoporus (p. 179) 



15. Enlarged scales immediately preceding gular fold (mesoptychials) small (not 



more than 3 times diameter of smallest scales in median part of pregular 

 fold) ; or, if larger, no evidence whatever of longitudinal light lines, or else 



at least a few dark spots on throat below level of ear openings 16 



Mesoptychials larger; a lined pattern always present in the young, generally 

 in adults; no dark spots on throat below level of ear openings; or, if less than 

 3 times diameter of smallest scales in median part of pregular fold, 7 light 

 lines and intervening dark spaces absolutely straight, continuous and 

 disconnected 28 



16. Mesoptychials moderately or considerably enlarged, more than 3 times 



diameter of smallest scales in median part of pregular fold 17 



Mesoptychials smaller 19 



17. No evidence of a longitudinal arrangement of Unes on back 18 



Dorsal surface distinctly lined tesselatus (p. 188) 



18. No spotting in area above level of tympanum and anterior to insertion of 



forearm, spots relatively well defined, very small, not yellowish. 



bacatus (p. 187) 

 Spots present in area above tympanum and anterior to insertion of forearm; 

 spots often obscure and diffuse, usually orange or yellowish. 



catalinensis (p. 188) 



19. Ventral surfaces of tail and limbs more or less suffused with red or pink. 20 

 Not so „ 21 



20. Black markings on temporal regions absent or few or ill-defined; dorsal and 



lateral markings on body showing both transverse and longitudinal arrange- 

 ment in at least large specimens; each dark unit or spot square or rectangular 



in outline, not noticeably rounded tigris rubidus (p. 191) 



Black markings on temporal region well defined; dorsal and lateral markings 

 on body showing a predominantly longitudinal arrangement; back covered 

 by alternate longitudinal chains of black and white, individual spots in 

 black chain rarely square or rectangular tigris celeripes (p. 190) 



21. Dorsal markings consisting of either fine reticulations or light spots, and these 



markings without longitudinal arrangement 22 



Dorsal markings with at least some indication of longitudinal arrange- 

 ment 23 



22. Labials deep or moderate brown or black tigris martyris (p. 191) 



Labials hght gray, slate or light brown tigris canus (p. 190) 



23. Dorsal light lines only 3 on each side (exclusive only of a pair of lateral lines), 



twice as wide as interspaces mazimus (p. 188) 



Dorsal light lines more numerous or narrower, or both 24 



24. Dorsal pattern of 6-8 persistent longitudinal light stripes 25 



Dorsal pattern of fewer than 6 unbroken light stripes; at least lower lateral 



stripe on each side broken by dark vertical bars 27 



