1300 General Notes. (December, 
©- A new SNAKE FROM New Mexico.—Avomarchus multynacu- 
latus, gen. et sp. nov. Group Homalopsinz, related to Tropi- 
onotus. 
Char. Gen.—Teeth isodont ; anal scute entire ; three internasal, 
and two nasal plates; loreal present; scales carinate, poreless. 
har. Specif.—Scales in twenty-one rows, all keeled excepting 
the inferior one. Superior labials eight, all low and rather long, 
the orbit bounded by the fourth, and cut off from the fifth by the 
inferior postocular. Loreal low, much longer than high. Pre- 
oculars two, both subquadrate; the superior the larger; the infe- 
rior resting on the fourth superior labial. Postoculars three, the 
median the smallest (the apex of the inferior cut off to form a 
fourth on one side). Temporals 1-3, the anterior large, bounding 
the sixth and seventh labials above. Rostral not prominent, — 
wider than deep, truncate above. Internasals longer than wide, © 
separated in front, and from the rostral by a pentagonal azygos 
plate. Frontal narrow, with concave sides, the anterior angles 
touching the superior preoculars. Superciliary plates convex, 
subtriangular, and nearly acute’ in front. Parietals elongate, pos- — 
teriorly acute and much divaricate. Muzzle quite narrow, eyes 
directed laterally, deca: Nie of 
olor above ash-gray, with six or seven longitudinal series 
brown spots. Those of the median two or three rows are sometimes — 
united, forming short cross-bars. Those of the inferior series are 
hers, Below 
So ae 
on the first row of scales and are blacker than the ot 
rior borders. Top of head brown, with darker brown markings 
as follows: A dark shade in the middle o 
row x opening forwards on the frontal ; 
a superciliary, and a transverse wave 
r 
do, of wal, 
‘ cisco 
I caught this snake in a net while fishing in the sai FA 
river, New Mexico, on the ranch of Mr. H. C.Wilson, w a r 
the boundary line of Arizona. In its characters It 15 quite a 
combining the entire anal plate of Eutania with the gente” 
acters of Regina B. & G., and a third internasal saps : 
rarely met with in serpents. The only Nort Apara H 
which it bears any resemblance is Tropidonotus taxisp like ¢ 
It is a good swimmer, and is doubtless piscivorom™ 5 
water snakes, on to Mr. H. 
I here take occasion to record my obligati opportun 
Wilson, without whose aid I should not have had the 
ontal. 
Total length, M. .708; do. of rictus oris, 0215 
