dipsas 



korros 



vmcosus 



spinalis 



(/emonensis 



ddhlii 



rh'jdorhaehis 



ventrimacalatus 



kardinii 



elcfianfissimus . 



jlorulentus 



(jracifis 



fasciolatus 



rav/'Vffieri 



nuiiunifer 



socotree 



(d(/irus 



hippocrcp>is 



dor 



diadema. 

 arenan 

 microlepis 



54. ZAMKNIS. 



I. Old- World species. 



3S3 



Sc. 



13 



If) 



17 



17 

 17-19 



lit 



11) 



It) 



]',) 



I'J 

 21-23 



21 

 21-23 

 21-23 

 23-25 



23 

 23-25 

 25-29 



31 

 25-33 

 25-27 

 41-43 



194-197 

 162-177 

 1S7-208 

 180-203 

 190-250 

 205-218 

 214-2(')2 

 194-211 

 193-212 

 197-200 

 201-228 

 20fi-228 

 197-225 

 190-222 

 197-21(5 

 219-228 

 214-232 

 222-258 

 245-254 

 210-278 



227 



263 



C. 



2 

 2 

 ^ 



1-2 



2 



1-2 

 1-2 



2 



1 



1 

 1 



102-130 



122-145 

 95-140 

 85-99 

 87-130 

 98-132 



113-154 

 82-119 

 85-110 

 79-83 

 82-100 



118-127 

 73-92 

 75-101 

 79-101 



107-119 

 87-104 

 77-107 



84 



65-110 



80 



100 



Lab. entering eve. 



4th, 5th. 



4th, 5th. 



4tli, 5th. 



4th, 5th, or5tIi,Gth 



4th, 5th. 



4tli, 5th, or 5th, (ilh 



5th, 6th. 



5tli, 6th. 



5tli. 



5th, or 4tli, 5th, 



5th, 6th. 



.5th, 6tli. 



4tli, 5tli. 



5th, (ith. . 



5th, or 5th, 6th. 



5th. 



5th, or 6th, or 0. 



5th, or 6th, or 0. 



4th, 5th. 



0. 



0. 



0. 



II. American species. 



oaxaca 



constrictor .... 

 lineatus 



mentnvnrius . 

 far/cl/ifurmis. 



t<('ni(dus 



pidcherrimus . 



7nexican us 



grahami 



Sc. 



15 

 17 

 17 

 17 

 17 

 15-17 

 17 

 17 

 17 



c. 



8' 



74- 



110- 



111- 



80- 



11.5- 



133- 



127- 



75- 



104 

 128 

 113 

 112 

 157 

 152 

 135 

 108 



Lah. entering eje. 



4th, 5lh. 



3rcl,4tli, or 4th, 5th. 



4th, 5th. 



4 th or 5th. 



4th, .5th. 



4th, 5ih. 



4th, .5th, 6th. 



4th, 5th, 6th. 



4th, 5th, or 5th, 6th 



1. Zainenis dipsas. 



Ilerpetodrps dip.s.as, ScJiler/. Phys. Serp. ii. p. 197 (1837). 



Leptopbis olivaceus, Dzim. ^' Bibr. vii. p. 647 (1854). 



Megablabes olivaceus, Gimth. Ann. ^ Mag. N. R. (3) xv. ISGS, p. 92. 



Snout scarcely projecting, obtuse ; eye very large. Rostral broader 

 tban deep, just visible from above ; inteniasals shorter than the 

 pra-frontals ; frontal once and a half as long as broad, as long as its 

 distance from the end of the snout, a little shorter than the ])arietals ; 

 loreal a little longer than deej) : a divided prajocular, not touching 

 the frontal ; a small suboculai- below the pritocular ; two postoculars ; 

 temporals 2-\-2; eight upper labials, fourth and fifth entering the 

 eye ; four or five lower labials ia contact with the anterior chiu- 



