268 CLASS XV. 



Sp. Psammophis lacertinus Schleg., CoslopeUis lacertina Wagl., Rhahdodon 

 fuscus F. L. Fleischmann, Dalmatice nova serpentium genera. Erlangte, 

 183 1, 4to, Tab. [11. ; this snake is found in the south of Europe and the 

 North of Africa ; the scales are grooved in the middle ; this species attains 

 a length of more than 4'. 



Bucephalus Smith, Dum., Bibr. 



Sp. Bucephalus typus Smith, Dendrophis coluhrina Schleg., DhphoUdus 

 Lalandii Bvvi&nj'iOY, CvY. R. Am., ed. ill., Rept. PI. -29; Cape of Good 

 Hope, Booiiislang of the Dutch Colonists. 



Note. — Here also is the place for some new genera of Dum., Bibr. 

 Hemiodontus, Chorisodon, and Tomodon. 



TarbopJiis Fleischmann, Dumer,, AiluropMs Fitz., Bonap. 

 Head small, distinct from trunk. Frenal scute produced to eye. 

 Eyes moderate, with pupil vertical, narrow. Anterior lower teetli 

 longer. Tail short, covered below with scutes in pairs. 



Sp. TarbopJiis fallax Fleischm., Dipsas fallax Schleg., Ailurophis mvax 

 Fitz., Fleischmann 1, 1. Tab. i. Bonap. Faim. Ital. Amfibi., Tab. 68; in 

 the south-eastern part of Europe ; it attains a length of about 2'. 



Lycognathus Dum., Bibr. 



Sp. Lycognathus scolopax DuM. and Bibr., Lycodon audax BoiE, Schl., 

 Sihophis audax Fitz., Coluber audax Daud. Rept. vi. PI. 19, South 

 America. 



Homalopsis KuHL, Fitz. Head elliptic, depressed anteriorly, 

 with small scutes ; sometimes scales in place of occipital scutes. 

 Eyes small, superior. Nostrils horizontal, small, situated towards 

 the apex of snout. Trunk cylindrical, thick, covered below with 

 short scutes. Tail thin, much shorter than trunk. 



Sp. Homalopsis buccatus Kuhl, Coluber buccatus L., Seba Thesaur. 11. Tab. 12, 

 fig. r. Tab. 21, fig. 3, Linn. Mas. Ad. Frid. Tab. 19, fig. 3, Mere. Beijtr. 

 II. Tab. 10, Java; — Homalopsis ScJineideri Schleg., Coluber Schneiderianus 

 Daud., Cerberus Russellii Gov., Cerberus boceformis Dum., Bibr., Seba 

 Thesaur. il. Tab. 15, fig. 3; East Indies, New Guinea. These serpents 

 reside in lakes and rivers ; they live mostly on fish. 



iVofe.— Here belong the sub-genera: Ilyjislrhina Wagl., {Homaloijsis Acr 

 Schl.), Eurostus Dum., Bibr., Trigonurus Dum., Bibr., Campylodon Dum., 

 BiBE., Cerberus Cuv. 



Herpeton Lac, Rhinopirus Merr. Two scaly appendages in 

 front of nostrils. Abdominal scutes minute, bicarinate. Tail scaly 

 below. 



