CROCODILIANS, TJZAUDS, ANT) SNAKES. 



1051 



series of large, oblong', rlioinboidal, alternating spots, each about four 

 scales long, and somewhat continent with each other at the adjacent 

 corners, giving the api)earance of a zigzag line upon each side. On 

 the first and second dorsal rows is a third series of veiy distinct black 

 s])ots, each on parts of tliree scales, and the extremities of two abdomi- 

 nal scutes. The intervening spaces of greenish white ground color are 

 eijual in width to the spots. 



Cat. Nos. 



Lo.'alitv. 



tiaHtvo.steffos. UrosieKos. S(vil 



Leiigtli. Tail. 



Inches. Inches. 



!»3() RJucouadu.Coulmihi,, Mexico 174. 90. 19. 24f. 6. 



8062 Durango, Mexico 1(53. — (?) 



Other specimens have the dorsal stri{)e on a single row of si^ales ;iud 

 the lateral stri])e has its ui)per border regular and distinct, without 

 interruption from tiie middle series of spots, the lower edge as in the 

 speciuien above described. Instead of the distinct spots upon the first 

 and second rows in that specimen, they are here broken up into black 

 borders of three approximated scales. In the only large specimen of 

 this variety the keels of the first dorsal row are not parallel to those 

 of the rows above, being directed obliquely downward and backward, 

 so that the posterior end of one keel falls below the anterior end of the 

 next succeeding, instead of forming a continuous line. The nose of 

 this specimen is also more pointed than in the typical one. 



The lengths of the tails in this subspecies are as follows : Cat. Xo. 81)07 

 i'l) three and one-half and three and one-twelfth times in total length; 

 Cat. No. 5023, three nnd one-fifth times. 



EitUvnia eqiies cqiies Reuss. 



EUTiENIA EQUES COLLARIS Jan. 



Euto'via coUariH Jan, Icou. G^n. Opliid., Pt. 25, 1867, pi. v. lij^. 2. 

 Kntan'm vyrtojmis oceUaiaCuvK, Hull. U. S. Nat. Mns., No. 17, 18S0, ]).22. 



Scales in nineteen longitudinal rows, the inferior smooth anteriorly, 

 but keeled posteriorly. Eight superior labials; loreal higher than long; 

 temporals 1-2-3, the anterior large. The lateral band on the second 

 and third rows of scales cream-colored; dorsal band extending to the 

 end of the tail, orange red. The usual alternating s(iuare black spots 

 between the two bands; the scales in the light interspaces black or 

 deep brown. Anteriorly the lateral black spots unite into a single 

 series of sulKpiadrate spots. The lower borders of the lower series of 

 spots invade the lateral band, sometimes (tutting it entirely off into sec- 

 tions of regular length, iielow the middle of each section, and there- 

 fore alternating with the inferior lateral spots, is another black spot, 



