152. lEPIOBIRA. 93 



5. Leptodira septentrionalis. 



Dipsas septentrionalis, Kenm'cott, JRep. U.S. Mex. Bound. Surv. ii. 



JJepi. p. 16, pi, yiii. fig. 1 (1859) ; Cope, Proa. Ac. Philad. 1860, 



p. 266. 

 Sinon annulatum septentrionale. Cope, Chech-list N. Am. Sept. p. 38 



(1876). 

 Leptodeira septentrionalis, Stfjneger, Proc. U.S. Nat. Mus. xiv. 1891, 



p. 605. 

 Sibon septentrionale, part., Cope, Proc. U.S. Nat. Mus. xiv. 1892, 



p. 677. 

 Leptodira annulata, part., Giinth. Biol. C.-Am., Sept. p. 170 (1895). 



Bostral twice as broad as deep, scarcely visible from above ; 

 internasals a little sborter tban the prfefrontals ; frontal once and a 

 half as long as broad, as long as its distance from the end of the 

 snout, shorter than the parietals ; loreal as long as deep ; two 

 prseocnlaxs, upper in contact with the frontal, with a small subocular 

 below them ; two postoculars ; temporals 1 + 2 ; eight upper labials, 

 fourth and fifth entering the eye ; five lower labials in contact with 

 the anterior chin- shields, which are as long as the posterior. Scales 

 in 21 or 23 rows. Ventrals 194 ; anal divided j subcaudals 65-72. 

 Greyish or pale brown above, with large, rhomboidal, transverse 

 black spots descending to the sides ; no lateral spots ; head spotted 

 with black, occiput whitish ; lower parts uniform whitish. 



Total length 720 millim. ; tail 150. 



South-western Texas and North Mexico. 



a. (S (Sc. 21 ; V. 194; C. 72). Texas. Smithsonian Institution [P.]. 



6. Leptodira personata. 



Dipsas annulata, var. 0, Dum. S/- Bibr. vii. p. 1141 (1864). 

 Leptodeira annulata, part., Giinth. Cat. p. 166 (1868). 

 Sibon annxjlata, part.. Cope, Proa. Ac. Philad. 1860, p. 266. 

 Leptodira personata, Cope, Proc. Ac. Philad. 1868, p. 310 ; Giinth, 



Biol. C.-Am., Sept. p. 171, pi. liv. fig8._ A & B (1895). 

 Eteirodipsas annulata, var. septentrionalis, Jan, Icon. Gin. 39, pi. i, 



fig. 2 (1872). 

 Leptodira rhombifera, G'unth. Ann. 8r Mag. N. H. (4) ix. 1872, p. 32, 



and I. c. p. 173, pi. liv. fig. 0. 

 Sibon peraonatum, Cope, Bull. U.S. Nat. Mus. no. 32, 1887, p. 67, 



and Proc. U.S. Nat. Mus. xiv. 1892, p. 677. 



rhombiferum, Cope, II. cc. 



Leptodira splendida, Giinth. Biol. C.-Am. p. 171, pi. liii. fig. B. 



Kostral broader than deep, scarcely visible from above; inter- 

 nasals shorter than the prsefrontals ; frontal once and a half to once 

 and two thirds as long as broad, shorter than the parietals ; loreal 

 as long as deep or longer than deep ; one or two prseoculars, usually 

 in contact -with the frontal, and usually a' small subocular ; two 

 postoculars; temporals 1 + 2; eight upper labials, fourth and fifth 

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

 the anterior, chin-shields, which are as long as or a little shorter 

 than the posterior. Scales in 23 or 25 (rarely 21) rows. Ventrals 



