396 



COLUBEID^. 



long as or a little longer than its distance from the end of the snout, 

 a little shorter than the parietals ; loreal as long as deep or longer ; 

 one prseocular (rarely two), never in contact with the frontal ; a 

 small subocular below the praeocular ; two (rarely three) postocu- 

 lars ; temporals 2 + 3 or 2+2; eight upper labials, fourth and 

 fifth entering the eye ; five (rarely four) lower labials in contact 

 with the anterior chin-shields ; posterior chin-shields usually longer 

 than the anterior, and separated from each other by scales. Scales 

 smooth, in 17 or 19 rows. Ventrals more or less indistinctly angu- 

 late laterally, 190-250 ; anal divided ; suboaudals 87-130. Colo- 

 ration very variable. 



Total length 1790 millim. ; tail 500. 



A. Forma ttpioa. — Young pale olive above, the head black with 



yellow markings. Some adults preserve the pale coloration of 

 the young, whilst others are dark green or black, with yellow 

 spots or longitudinal streaks, &c. ; the tail usually striated 

 black and yellow ; belly yellow or greenish white, uniform or 

 with small dark dots. Melanotic specimens have been named 

 Z. carbonarius, Bp., and Z. sardus, Suckow. 

 France, Switzerland, Italy, Malta, lUyria, Dalmatia, and Greece. 



a. c? (Sc. 19 ; V. 205 ; Leffond, Haute- 

 0. 110). Saone, France. 



b. c? (So. 19 ; V. 200 ; Turin. 

 0. 104). 



c-d,e,f,g. tS (Sc. 19, 19, Bologna. 



19, 17 ;V. 203, 218, 203, 



200 ; C. 113, 113, 104, 



110) & yg. (Sc. 19 ; V. 



219 ; 0. 100). 

 h. Yg. (Sc. 17 ; V. 210 ; 



0. 98). 

 i-yt. HoT.(Sc.l9; V. 217; 



0. 110) & yg. (Sc. 19 ; 



V. 210; 0.94). 

 l-n, 0. 2 (So. 19, 19, 19, 



17; V. 215, 213, 214, 



211 ; 0. 109, 87, 113, 113). 

 p-s. cJ (So. 19 ; V. 196 ; Syracuse. 



0. 118) & ? (Sc. 19, 19, 



19 ; V. 204, 205, 206 ; 



C. Ill, 98, 112). 

 t. Hgr. (Sc. 19 ; V. 198 ; Malta. 



C. 101). 

 u. c? (Sc. 19 ; V. 171 ; Cerigo Island. 



C. 109). 

 V. Skull. France. 



B. Var. CASPiTJS, Iwan (trahalis. Pall., erythrogcister, Fisch.). — Grey 



or pale olive above, each scale with a yellowish or pale brown 

 longitudinal streak ; with or without black spots ; beUy uniform 

 orange or red. 

 S.E. Europe, Transcaucasia, N.W. Persia. 



a. S (Sc. 19 ; V. 203 ; C. ?). Greece. 



Feri'ieare, 



nines. 

 Rome. 



Naples. 



Dr. F. Mocquard [P.]. 



Prof. Bonelli [P.]. 



Prof. J. J. Bianconi [P.]. 



Apen- Prof. G. B. Howes [P.]. 

 W. 0. Trevelyan, Esq. 



Dr. F. S. Montioelli [E.]. 



Lord Lilford [P.]. 



J. Couch, Esq. [P.]. 

 Dr. Forsyth Major [P.]. 



