212 



OPHLDIA. 



duct of a small poison gland. This sub-order includes the Agly- 

 phodonta and the Opisthoglypha. 



Fam. TTropeltidae. With short pointed head, mouth not distensible, but with 



teeth in both jaws. Uropcltis phllippinus Guv. 



Fam. Tortricidae. With small hardly discernible head and short conical 



tail. The teeth are small, and there are teeth on the palatine bones. They 

 have a rudiment of the pelvis with small anal claws. 

 Tortrix scytale Hmpr., South America ; Cylindrophis 

 rufa Gray, Java. 



Fam. Pythonidae. With long oval heads covered 

 with scutes or scales, with rudiments of hind limbs 

 which terminate with an anal claw at the sides of 

 the cloaca. Eryx jaculus Wagl., South Europe ; 

 Boa constrictor L., Brazil; Python reticulates 

 Schn., Sumatra. 



Fam. Colubridae. The head is not very broad, 

 and is distinct ; it is covered with scutes. The 

 dentition is complete. The tail has a double row 

 of scutes on the under surface. Coronella aitstrlaca 

 Lam-.^G Icevis Lac., widely distributed in Europe; 

 Lwplils cobella L. Brazil ; Tropidonotus natrix 

 Gesn., Ringed snake. With obliquely keeled scutes. 

 The species is widely distributed in Europe. Tr. 

 tcsselatus Meyr. ; Coluber (Calopeltis) ^Esculapii 

 Ge$r\. = C.flai-escens Gm., the snake of ^Esculapius, 

 South Europe, Schlangenbad, Austria ; Zainenis 

 atrovirens Shaw, South Europe ; Herpetodryas 

 carinatus L.. Brazil. 



Fam. Dendrophidae. Tree snakes. Body thin 

 and slender, head usually long, flat and distinct 

 from the neck. The ventral scutes usually with 

 two keels. Ventral caudal scutes in two rows. 

 Dendropliis picta Gm., East Indies ; Alicstulla 

 smaragdlna Boie, West Africa. 



Fam. DryopMdse. Body very long and slender, 

 as is the head ; snout thin and sometimes prolonged 

 into a flexible appendage. Dryophis argentea Daud., 

 Cayenne. 



Fam. PsammopMdse. Sand snakes. The posterior 

 tooth of the upper jaw is grooved. Psammopliis 

 lineatm Dum. Bibr., Mexico ; Ccelopeltis lacertina 

 Wagl., Egypt. 

 Fam. Dipsadidae. The body tolerably slender, strongly compressed ; with 



short tail, broad at the end. and very distinct. There are usually posterior 



grooved teeth. D\psas dendropliila Reinw., East Indies ; D. fasciata Fisch., 



West Africa. 



Fam. Scytalidae. The hindmost tooth in the upper jaw is the longest, and is 



grooved. Scytale coronatum Dum. Bibr., Brazil. Oxyrhopus plwnibeus Wied., 



South America. 



Sub-order 3. Proteroglypha. Poisonous snakes with large grooved 



FIG. 638. TypJilops lumbri- 

 calis (regne animal). 



