SYNOPSES AM) DESCRIPTIONS. 107 



interrupted at the first abdominal shields. Large rounded light-bordered 

 black spots, ten in number, widely separated on the body. Tail with three 

 wide rings of black. Scales of back black-tipped; belly probably uniform 

 red or yellow. Mexico. (I). & B.) 



var. DIASTEMA. 

 Ei.aps diastema /'. & /.*., 1854, Erp. Gen. VII, p. 1222. 



Muzzle and vertex black. Occiput crossed by a band of white or red 

 (yellow), behind which there is a black one extending under the throat. 

 Fourteen or fifteen black white-bordered rings on the body, separated by 

 white (red) spaces ten or twelve times as wide, in which the scales are 

 black-tipped. A second specimen had reddish intervals and twenty-one 

 rings. Mexico. (D. & B.) 



Var. CEREBRIPUNCTATUS. 

 Elaps corallinus var. Peters, 18G9, ^1/. B. Berl. Akad., S77. 



Snout to parietals black. A yellow band across the parietals. From 

 the parietals a black yellow-edged band covers the first seven rows of scales. 

 Ten narrow yellow-edged black rings on the body. Tail black and yellow. 

 The scales in the broad red spaces are tipped with black. Pueblo, Mexico. 



Flaps euryxanthus. 



Kennkott, 1860, Pr. Ac. N. Sc, Phil., p. 337. 



"Head very small, narrower than the neck; entirely black as far back as 

 the angle of the mouth. Banded alternately with black and light brick- 

 red, separated by narrow rings of creamy white, all the bands immaculate. 

 First broad ring behind the occiput red instead of black as in the other 

 species." Sonoran region. 



Flaps laticollaris. 



Peters, 1869, Monateb. Berl. Akad., 877. 



Head black to the parietals. A yellow band across the parietals covers 

 the first two rows of scales. Behind this a black ring of twelve or thirteen 

 scales in width, then a yellow of three or four scales, and then a black of 

 four or five precede the first red one, which occupies from six to nine 

 scales. Similar red rings separate the eight or nine triads of black ones 

 on the body. The middle ring of each triad is nearly twice as broad 

 as the others, from which it is separated by narrow yellow spaces. The 



