182 [OcToBER, - 
the rivers Zuni and Great and Little Colorado of the West. Too much 
praise could not be awarded to Dr. Woodhouse for the zeal and intelligent in- 
dustry he has manifested in the performance of his arduous duties as physician 
and naturalist to the Expedition. 
When the reptiles brought from Oregon and California by Mr. Townsend, and 
those of the Exploring Expedition, shall have been carefully studied, much 
will have been done toward the attainment of a knowledge of the geographical 
distribution of our reptiles, to which the admirable work of Prof. Holbrook has 
so greatly contributed. ‘To him we owe nearly all the knowledge we possess 
with certainty of North American Herpetology, having brought into order and 
system what was before uncertain and confused, and in clear and classical lan- 
guage determined their characters with precision; thus greatly facilitating 
the labors of all future inquirers. 
ANOTA, Hallowell. 
Gen. Char. Head small, covered above with polygonal plates; a row of pointed 
spines posteriorly , nostrils within the supraciliary ridge: supraciliary ridge 
but slightly developed, terminating posteriorly in a small pointed spine ; chin 
covered with smooth granulations of unequal size; a row of pointed scales on 
each side; two gular folds; no external openings for the ears; extremities 
slender ; upper surface of body smooth, the numerous pointed spines of the 
ordinary Phrynosomas not existing ; no fringe along the lateral margins of the 
abdomen ; body compressed, oval, tail nearly as long as the body; femoral 
pores very distinct. ’ | 
Anota M?Cattir. 
Sp. Char. Margin of upper jaw denticulated posteriorly ; the two posterior 
of the rows of spines along the margin of the under jaw small; the two anterior 
to these quite large; the two middle spines of the row upon the occiput much 
longer than the rest, and incurvated; intermediate spine very small; body light 
ash color above, with a narrow dorsal line of black extending from the occiput 
to the root of the tail; two oblong dark colored blotches upon each side of the 
neck; two rows on each side of the dorsal line, of dark colored subcircular 
Spots, two in a row, the external larger than the internal; ground color of upper 
Surface of tail and extremities same as that of the upper surface of the body; 
under surface of body and extremities silvery white, immaculate; twenty dis- 
tinet femoral pores on each side. 
Dimensions. Length of head 7 lines; greatest breadth, exclusive of spines, 
8 lines; length of longest spine 5} lines; of the next to it 2}; length of arm 
7 lines; of fore arm 5 lines; of hand, to extremity of, longest finger, 6 lines ; 
length of thigh 7 lines; of tibia 7 lines; of foot to extremity of longest toe 
72 lines; length of neck and body to vent 2 inches 44 lines ; length of tail 1 inch 
82 lines; total length 4 inches 5 lines. . 
Habitat. Great Desert of the Colorado, between Vallicita and Camp Yuma, 
about 160 miles east of San Diego. TAP 
Remarks. The animal above described is a Phrynosoma, the ears of which 
are concealed by the integument., It was caught by Col. George A. M’Call, of 
the United States Army, during a recent journey through California and Oregon, 
and presented by him to the Academy with two young specimens of Phrynoso- 
ma coronatum. ‘The great length of its middle posterior spines, its contracted 
neck and singularly shaped body and tail, give to it a very odd appearance, 
differing remarkably from that of any of the known Phrynosomata. 
Descriptions of New Species of Reptiles from Oregon. 
By Epwarp Hatrowetz, M.D. 
TROPIDONOTUS CONCINNUS. 
Sp. Char. Head slightly swollen at the temples, depressed; canthus rostra- 
lis grooved; a longitudinal yellow line running along the median line of the 
back, including one entire row and one half of each of the adjoining rows of 
