NEW SPECIES OF BARK BEETLES—-BLACKMAN 211 
first striae more strongly impressed than on disk, punctures reduced ; 
second and third striae feebly impressed, punctured as on disk, inter- 
spaces, including second, feebly convex, rather sparsely punctured, 
with fine, erect, moderately long hairs. 
Male.—Similar to female in habitus; frons convex above, transversely 
impressed below, with a strong, rather blunt median carina, punctures 
sparse and small, with short, fine, inconspicuous hairs; pronotum and 
elytra similar to those of female. 
This species is not very closely allied to any of the species known 
from Mexico or from the United States. It apparently belongs to 
group III, although somewhat larger than any other species of that 
group. 
Type locality—Chalco, Mexico. 
Additional localities—Rio Frio, Puebla; Jalapa, Veracruz, Mexico. 
Host.—Pinus leiophylla. 
Additional hosts —Pinus montezumae, Pinus cembroides. 
Type material—Holotype, allotype, and 22 paratypes, U.S.N.M. No. 
55985. 
The holotype, allotype, and nine paratypes were taken from Pinus 
leiophylla at Chalco, Mexico, January 27, 1936; five paratypes from 
P. leiophyila, at Rio Frio, Puebla, Mexico, February 10, 1936; four 
paratypes from Pinus sp., Rio Frio, February 1936; two paratypes 
from Pinus sp., at Rio Frio, February 10, 1936; and two paratypes 
from P. montezumae, Jalapa, Veracruz, Mexico, February 9. All were 
collected by Donald DeLeon. 
PITYOPHTHORUS CILIATUS, new species 
PLATE 238, Ficures 48, 44 
Female.—Piceous, with elytra reddish brown, 1.77-2.06 mm. long; 
holotype 1.86 mm. long, about 2.70 times as long as wide. 
Frons flattened on more than a semicircle extending from eye to eye, 
margined around outside, finely, densely punctured, with fine, long 
hairs, those at periphery incurved; median carina faintly indicated 
below on epistoma. Mandible with fringe of fine hairs rising from 
near its base and masking basal half. Eye with moderate facets, about 
half divided by a deep emargination. Antenna (fig. 48) with club 
1.27 times as long as wide, much longer than funicle, first 2 sutures 
nearly straight, partially septate, third suture strongly arcuate, not 
septate. 
Pronotum about 1.11 times as long as wide, widest near base, pos- 
terior margin weakly arcuate, posterior angles rounded; sides weakly, 
arcuately convergent, weakly constricted in front of middle, moderately 
rounded in front, with anterior margin armed with rather broad, low 
serrations; anterior area with irregular, concentric rows of rather low 
