2 BULLETIN: MUSEUM OF COMPARATIVE ZOOLOGY. 
tail one-seventh longer than the body; slender, round, tapering regularly. 
Head scales granular, crown from the eyes backward with numerous minute 
tubercular scales. Rostral large, wider than high, joined on the upper edge 
by two nasals and a smaller subquadrangular internasal. Nostril edged by the 
rostral, nasal, a small scale joining the latter, four or five granules, and the first 
labial. Labials thirteen ; lower labials eleven; mental large, pentagonal, 
wedged between two large chin shields, which latter meet for a considerable 
distance behind the angle of the mental. Smaller chin shields decrease in size 
backward, from the anterior, at the lower edges of the labials. Throat with 
granules. Back covered with granules, in which there are twenty-four longi- 
tudinal series of small tubercular scales, of which those near the thighs and 
tail are more elongate, and rise in a low blunt point or short depressed keel. 
Abdominal scales larger, flat, smooth, imbricate, rounded on the free edges, in 
twenty-eight longitudinal rows. Upper caudal scales similar to those of the 
hinder portion of the back; scales of the lower surfaces of the tail, flat, smooth, 
irregular in shape and in width, many of them reaching across the entire lower 
side. 
Light grayish brown with transverse bands of darker, white below. Top of 
head light, with small streaks and spots of brown; a dark band with darker 
edges from the end of the snout through the eye above the ear behind the occi- 
put crossing the nape; a similar band across the space between the shoulders, 
three across the body between the arms and the legs, and one across the 
space between the hips. Similar bands cross the tail, where they are darker, 
and the difference in depth of color in edges and median portions disappears. 
Name in honor of Mr. E. A. C. Olive. 
This form differs from G. pelagicus in tubercles, chin shields, abdominal 
scales and markings. 
(Queensland, near Cooktown ; Mr. Olive. 
Phyllurus cornutus Oett. 
P. lichenosus GUnt. 
In Mr. Olive’s collection there is a specimen rather smaller than the type 
and exhibiting some variation from the original description. The transverse 
bands of brownish on the tail completely encircle that organ, and are quite as 
distinct on the lower side as on the upper. On the median portion of the ven- 
tral surface of the tail the five white interspaces are much wider and whiter 
than the white blotches on the back of the body. The diameter of the eye is 
half the length of the snout. The conical tubercles on the keel at the sides of 
the abdomen readily distinguish this form from P. platurus, as also the scal- 
lops. The type of P. cornutus was about eight and one-fourth inches in 
length, that of P. lichenosus was about five and one-eighth, a present specimen 
is intermediate between the two, and, as it appears to me, conclusively estab- 
lishes the identity of these species. 
