Coleopterous Fauna of Lower Rio Grande Valley. 65 
DERMESTIDAE. 
168. Dermestes caninus , Germ. — Taken by Schwarz in June. Distr. 
Cosmopolitan. 
169. Dermestes vulpinus , Fabr. — On sacks of old bones, in May. 
Distr. Cosmopolitan. 
170. Acolpus primus , Jayne. — Beaten from foliage in woods near 
Rock’s Resaca, June 26th. Distr. Southern Texas to Arizona. 
171. Anthrenus varius , Fabr. — Flying, March 16th to 23rd. Distr. 
Cosmopolitan. 
172. Cryptorhopalum. balteatum , Lee. — On Abutilon holosericeum , 
June 18th. Distr. Arizona and New Mexico to Texas, and Mexico. 
173. Cryptorhopalum triste, Lee. — Taken in flowers of cacti in 
March. Distr. New Jersey to Southern Arizona, Texas, and Tamauli- 
pas. 
HISTERIDAE. 
174. Hololepta yucateca, Mars. — Two specimens of this gigantic his- 
terid (18 to 19 mm.) were taken in an offensively rotten and recently 
decayed head of Yucca treculeana at the Yucca Ridges, July 9th. They 
were found in the pulp between the bark of head and the central cylin- 
drical head mass of the plant. Distr. Yucatan and north through Mex- 
ico to Texas, Southern Arizona, Southern California, and Lower Cali- 
fornia. 
175. Hololepta vicina, Lee. — Three taken in decaying heads of Yucca 
treculeana at Yucca Ridges, July 9th. Distr. Texas, Mexico, Arizona, 
and Southern California. 
176. Hister , sp. — Several of a small species found in same Yucca 
trunks with preceding, July 9th. 
177. Teretrius, n. sp. — Two specimens taken from burrow or tunnel 
of dead Amphicerus in cotton stalk, March 20th, and ten or more issued 
up to June 14th from dead last year’s cotton stalks gathered in March. 
They occurred particularly if not uniformly in the deserted transverse 
tunnels of the Amphicerus. Length, 2\ mm. Like T. conig erum, but 
wholly polished black, somewhat stouter and a little more elongate. 
Distr. Known only from the Lower Rio Grande region. 
178. Teretriosoma conigerum , Lewis. — Numerous specimens taken 
from tunnels of Amphicerus in dead last year’s cotton stalks, February 
13th to June 14th, gathered in field at Santo Tomas. They occur, like 
the preceding, in the deserted transverse tunnels of the Amphicerus, 
upon which they are parasitic. Distr. Mexico, reaching Southern 
Texas on the north. 
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