CATALOGUE 



SNAKES. 



Order OPHIDIA* 



" Quadrate bone articulated to the skull ; brain-capsule entirely 

 osseous ; rami of the mandible united by ligament. Anal cleft trans- 

 verse. Copulatory organs present, paired." — G'dtitJter, Phil. Trans. 

 clvii. 1867, p. 625. 



Synopsis of the Families. 



I. No ectopterygoid (transpalatine) ; pterygoid not extending to 



quadrate or mandible ; no supratemporal ; prjefrontal forming 

 a suture with nasal ; coronoid present ; vestiges of pelvis. 



Maxillarj' vertical, loosely attached, toothed ; mandible edentulous ; 

 a single pelvic bone. • 1. Typhlopidae, Vol. I. p. 3. 



Maxillary bordering mouth, forming a suture with praemaxillary, 

 prsefrontal, and frontal, toothless ; lower jaw toothed ; pubis 

 and ischium present, latter forming a symphysis. 



■ 2. Qlauooniida c, Vol. I. p. 57. Z', 



II. Ectopterygoid present ; both jaws toothed. 



A, Coronoid present ; prefrontal in contact with nasal. 

 1. Vestiges of hind limbs; supratemporal present. 



Supratemporal large, suspending quadrate. 



3. Boidae, Vol. I. p. 71. 



Supratemporal small, intercalated in tlic cranial wall. 



4. Ilysiidae, Vol. I. p. 131. 



* The author now regards the Snakes as forming only a Suborder (O/j/^/c^w) 

 of the Order Squamata, Oppel, equivalent to the Suborders Lacertilia and 

 Rhiptoglossa, which have been dealt with iu the ' Catalogue of Lizards.' 

 Cf. Boulenger, Faun. Ind., Kept. p. 52 (1890), and Proc. Zool. Soc. 1891, 

 p. 117. 



VOL. I. B 



