268 CLASS xv. 



Sp. Psammophis lacertinus SCHLEG., Coslopeltis lacertina WAGL., Rhabdodon 

 fuscus F. L. FLEISCHMANN, Dalmatice nova serpentium genera. Erlangae, 

 1831, 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 colubrina SCHLEG., Dispholidus 

 Lalandii DUVERNOY, Cuv. R. Ani., ed. ill., Rept. PL 29; Cape of Good 

 Hope, Boomslang of the Dutch Colonists. 



Note. Here also is the place for some new genera of DUM., BIBR. 

 Hemiodontus, Chorisodon, and Tomodon. 



Tarbophis FLEISCHMANN, DUMER., Ailurophis FlTZ., BONAP. 

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

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



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



^ 



Sp. Tarbophis fallax FLEISCHM., Dipsas fallax SCHLEG., Ailurophis vivax 

 FITZ., FLEISCHMANN 1. 1. Tab. i. BONAP. Faun. Jtal. Amfibi., Tab. 68; in 

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



LycognatJius DUM., BIBR. 



Sp. Lycognaihus scolopax DUM. and BIBB., Lycodon audax BOIE, SCHL., 

 Sibophis 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., SEE A Thesaur. 11. Tab. 12, 

 fig. i, Tab. 21, fig. 3, LINN. Mus. Ad. Frid. Tab. 19, fig. 3, MERR. Beijtr. 

 II. Tab. 10, Java; Homalopsis Schneideri SCHLEG., Coluber Schneiderianus 

 DAUD., Cerberus Russellii Cuv., Cerberus boaformis DUM., BIBR., SEBA 

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

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



Note. Here belong the sub-genera: ffypsirhina WAGL., (Homalopsis A er 

 SCHL.), EuroslusDuM., BIBR., Trigonurus DUM., BIBR., Campylodon DUM., 

 BIBR., Cerberus Cuv. 



Herpeton LAC., Rhinopirus MERR. Two scaly appendages in 

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

 below. 



