MEXICAN AMPHIBIANS—TAYLOR AND SMITH 539 
The species has been found chiefly in or under rotten logs, under 
stones, and under clumps of dead grass. 
One of the cotypes (now U.S.N.M. No. 103591) of Spelerpes leprosus 
Cope (1869a, pp. 105-106) belongs to this species. 
BOLITOGLOSSA CEPHALICA RUBRIMEMBRIS, new subspecies 
Type.—U.S.N.M. No. 110661, female, collected 6 km. south of 
Santa Anita, Hidalgo, elevation about 4,500 feet, October 10, 1939, 
by Dr. and Mrs. Hobart M. Smith. 
Paratypes—U.S.N.M. Nos. 110659-110660, collected with the 
type; E.H.T.-H.M.S. Nos. 25411-25413, topotypes; H.H.T.-H.M.S. 
No. 12495, Minas Viejas, Hidalgo, July 1, 1940; E.H.T.-H.M.S. No. 
23007, 6 miles south of Santa Anita, Hidalgo, September, 1939; E.H.T.- 
H.M.S. No. 29831 near Zacualtipin, Hidalgo, July 2, 1940. 
Diagnosis.—A medium-sized salamander similar to B. cephalica 
cephalica, but with the greater portion of limbs and posterior third or 
fourth of the tail red. ‘The adpressed limbs touch or overlap a dis- 
tance equal to the width of a costal fold. 
Description of the type.—Body short, the maximum known length 
being 53 mm.; tail 38 mm.; head short, the eye (8 mm.) greater than 
length of mouth; nostrils small, the groove running from the pos- 
terior part down to the indistinct subnarial swelling; head broad, its 
width 9 mm.; length of head to the neck groove, 12 mm.; posterior 
part of eyelids inserted under a diagonal fold; interorbital width, 
about one and one-half times the width of a single eyelid; a strongly 
defined groove begins on side of head behind eye and runs down, cross- 
ing jaw angle, thence across the chin; the groove emerging from nuchal 
fold runs up and somewhat forward to the median line; an indis- 
tinct irregular groove runs back from near eye to the lateral edge of 
nuchal fold; the posterior extension of the hyoid forms a ridge, visible 
as far back as the first intercostal fold behind the arm; 11 well- 
defined costal grooves, those in axilla and groin apparently lacking; 
skin between grooves on sides folded longitudinally; sides of cloaca 
with diagonal folds; a small gland behind insertion of femur. 
Maxillary-premaxillary teeth about 40-40; mandibular teeth about 
40-44; vomerine teeth 16—? (series partly destroyed on one side), 
the outer teeth extending beyond outer level of choanae; the para- 
sphenoid teeth in two series, widened posteriorly, narrowed anterior- 
ly, separated from each other by a narrow space; a total of about 95 
teeth. 
Limbs rather long, when adpressed to the body the toes and fingers 
touch; length of fingers in following order of size 1, 4, 2, 3; the toes 
1,5,2,4,3; digits broad, rounded at tips, the basal web involving all 
but tip of first finger and toe, and part of the proximal phalanx of 
the other digits; it includes nearly two-thirds of that of the fourth 
toe; a constriction about base of tail; about 22 grooves on tail; skin of 
