Vou. IIT] VAN DENBURGH—NOTES ON ASCAPHUS 261 
toid gland is not strongly developed, but may be made out as 
a glandular postocular ridge descending along the side of the 
neck. 
By far the most remarkable external feature of these toads 
is the fail! This is well-developed in the three specimens at 
hand, and was present also in the one collected by Dr. Van 
Dyke (No. 6907). It extends back from six to eight milli- 
meters from the posterior surface of the thighs, is about four 
millimeters wide, and about three and a half deep at its base. 
The cloaca is continued from its usual position into this struc- 
ture, and ends in a large, swollen orifice just in front and be- 
low the tip of the “tail.”’ This structure, at first glance, sug- 
gests that the specimens were but recently transformed, but 
the ossification of the skeleton and the development of the 
testes show that they are adult. It is possible that this ‘‘tail’’ 
may be a sexual organ. 
The pupil is vertical. No tympanum can be distinguished. 
The small round patches of vomerine teeth are between the 
anterior part or middle of the choanae, and are about equi- 
distant from the internal edges of these openings and from 
each other. The tongue is very broadly attached, but is 
slightly free all around its edge. 
The hind foot has one rounded tubercle at the base of the 
first toe. On the lower surface of the carpus are three pads— 
a very large inner one, and a small one on the base of each of 
the two outer metacarpals. . 
The coloration is dull grayish or brownish slate above, with 
a light gray band, bordered behind with blackish brown, cross- 
ing the head over the anterior halves of the upper eyelids. 
There is a blackish streak from the snout to the eye and from 
the eye along the paratoid. Some irregular black markings 
may be made out on the sides, back, and limbs, with a tendency 
to form longitudinal streaks. The “tail” has a light dorsal 
stripe, bordered on each side by dark brown streaks. Most of 
the warts are lighter than the ground color. The lower sur- 
faces are yellowish white clouded with slate. There is a 
row of white dots along the rim of the lower jaw. 
No. 30393, which was intermediate in size and roughness 
of skin, has been prepared as a skeleton. The following notes 
were made before this was done, and the skin has been pre- 
