OF WASHINGTON. 71 
NOTES ON SOME MEXICAN SCOLYTID^E, WITH DESCRIP- 
TIONS OF SOME NEW SPECIES. 
BY A. D. HOPKINS. 
(In Charge of Forest Insect Investigations, 
Bureau of Entomology, U. S. Dept. Agr.) 
Chapuis (1869), Eichhoff (1868-' 79), and Blandford (1885- 
1904), have described several hundred species of Scolytids 
from Central America and Mexico, but there has been com- 
paratively little recorded regarding their habits. Recently 
some information has been contributed in this line in an 
article by Prof. A. Iy. Herrera (El Progreso de Mexico, June 
8, 1903) on a bark beetle injuring the white mulberry, and 
by Dr. S- J. Bonansea (in a pamphlet entitled "Birds and 
Insects," published by the Agricultural Society of Mexico, 
1904), in which reference is made to extensive depredations 
by bark beetles on the pine forests in different sections of 
Mexico. The references to Scolytidae in both of these papers 
were based on preliminary identifications of species sent to 
the Bureau of Entomology by the authors. Considerable 
additional Mexican material has been received from Prof. 
Herrera, Dr. Bonansea, and Mr. E- Baumann. In response to 
a request from Dr. Bonansea for names and descriptions of 
new species, and further information in regard to the named 
ones, this paper is presented, in order that he may. include 
them in his forthcoming report on investigations of the causes 
of dying timber in Mexico. 
The Scolytidae received from these gentlemen represent 
nine genera and sixteen species, of which ten appear to be 
undescribed. Descriptions of these, with notes on other species 
from Mexico and their allies in the United States, follow: 
Platypus rugulosus Chap. Three females and one male, 
Michoacan, Mexico, in wood of "chocolate tree," received 
from Prof. Herrera. This is a common and widely distributed 
species in Central America and Mexico, and probably extends 
into the southern border of the United States. One specimen 
in our collection from California appears to be different al- 
though closely allied. 
Platypus pini, n. sp. Male type, length 5 mm. ; very elongate cylin- 
drical, 'piceous; legs and antennae lighter reddish. Head, prominent, 
nearly one-third as long and slightly broader than anterior width of 
prothorax; front broad, flat, opaque, pubescent and punctured, but the punc- 
tures are very shallow, of irregular size and often contiguous; the occiput 
