ART. 8, BUPRESTID BEETLES OF MEXICO—FISHER. 35 
PACHYSCHELUS NIGRICCLLIS Waterhouse. 
Pachyschelus nigricollis WATERHOUSE, Biol. Centr.-Amer. Coleopt., vol. 3, pt. 1, 
1889, p. 148, pl. 7, figs. 21, 21a. 
This species was described from material collected by Sallé at 
Cordoba, Mexico. No specimens of this species have been examined 
by the writer, and it is placed in the key from the characters given 
in the original description. 
PACHYSCHELUS COMPACTUS Waterhouse. 
Pachyschelus compactus WATERHOUSE, Biol. Centr.-Amer. Coleopt., vol. 3, pt. 1, 
1889, pp. 138-139, pl. 7, figs. 15, 15a. 
This small, oval species is the most variable in color of all the species 
in the genus. The typical form was described from material collected 
by Mr. Champion at Bugaba at an altitude of 1,000 feet, and Volcan 
de Chiriqui at an altitude of 2,500 to 4,000 feet, all in the Republic 
of Panama. It is also reported from the following localities: David, 
San Miguel in the Pearl Islands, Panama; Teapa in Tabasco, Atoyac 
in Vera Cruz, Mexico; San Juan and Chiacam in Vera Paz, and El 
Tumbador, Guatemala; and Belize, British Honduras. It is repre- 
sented in the National Museum Collection by four examples collected 
at Porto Bello, Panama, during February and March, 1911, by E. A. 
Schwarz. Three of these are the typical form in which the head 
and pronotum are dark blue, and the elytra dark blue or green. The 
other specimen, which was taken with the typical form, is the variety 
with the head and pronotum cupreous, and the elytra dark blue, with 
a greenish tinge. 
PACHYSCHELUS CHAPUISI (Duges). 
Brachys chapuisi Ducks, La Naturaleza, ser. 2, vol. 2, 1891, p. 36, pl. 2, fig. 63. 
This species was described from Tupatora, Mexico, and placed in 
the genus Brachys by Dugés. There is a female specimen in the 
National Museum Collection, which was received for determination 
from Kugenio Dugés a number of years previous to the publication 
of his description, and labeled in his own handwriting, ‘#2030, Brachys 
chapuisi, E. Dug.’”’ without any locality given. This specimen 
probably was taken from the same set from which he described the 
species afew years later. Fourspecimens, two males and two females, 
were received from Prof. H. F. Wickham, which were collected by 
himself at Durango and Tepehuanes, State of Durango, Mexico. 
These specimens are exactly like the example received from Dugés. 
PACHYSCHELUS DEPLANATUS (Chevrolat). 
Inus deplanatus Cuevrouat, Silbermann’s Rev. Ent., vol. 5, 1838, pp. 104-105. 
This species was described in the genus Lius from material collected 
at Orizaba, Mexico. It is very closely allied to Pachyschelus chapuisi 
(Dugés), but Chevrolat states that deplanatus has the underside of 
