Coleopterous Fauna of Lower Rio Grande Valley. 97 
cotton. Length, nearly four mm. In form stout, thorax and abdomen 
same width. Color, deep black ; tarsi and parts of legs brownish. Under- 
side with pits containing gray pubescence. Thorax and elytra beautifully 
sculptured, the latter longitudinally and the thorax longitudinally on disk 
anteriorly. One specimen isTarger than the above measurement and has 
a reddish-brown tinge. Distr. New to the United States fauna. Tamau- 
lipas and Southern Texas. 
487. Conotrachelus aTbicinctus, Lee. var. — -A number beaten from 
Clematis drummondii and Celtis in palmetto jungle at Santo Tomas, 
June 9th to 23rd. Also taken by Schwarz. Distr. District of Columbia 
to Georgia, Florida, Alabama, Louisiana, Southern Texas, and Tamau- 
lipas. 
488. Conotrachelus belfragei, Lee.— Beaten in woods near Rock’s 
Resaca, June 26th. Distr. Known only from Texas. 
489. Conotrachelus leucophaeatus , Fah. — One specimen taken on Leu- 
caena pulverulenta in edge of palmetto thicket at Santo Tomas, June 7th. 
Distr. Mexico and Southern Texas, occurring on Euphorbia marginata, 
according to Schwarz. 
490. Conotrachelus , sp. — Beaten at Rock’s Resaca, June 26th. A spe- 
cies with two creamy patches on the back. Distr. Known only from this 
region. 
491. Conotrachelus , sp. — One beaten at Rock’s Resaca, June 26th. A 
large species with a white patch behind. Distr. Known only from this 
region. 
492. Rhyssematus pruinosus , Horn (nec Boh.). — Two specimens 
beaten in palmetto thicket near Santo Tomas, June 27th. Distr. South- 
ern Arizona to Southern Texas, breeding in seeds of Acacia greggii ac- 
cording to Schwarz. 
493. Rhyssematus , sp. — One specimen beaten from Clematis drum- 
mondii in palmetto jungle at Santo Tomas, June 23rd. Also taken bv 
Schwarz in June. A black, unicolorous species. Distr. Known only 
from this region. 
494. Chaleo dermus , sp. — Seventeen specimens beaten from an Acacia 
with pale bluish flowers near Rock’s Resaca, June 25th. A rather smooth 
species of a fine metallic greenish color, with light reddish browm elytra. 
Distr. Kew to the United States fauna. Probably a new species, occur- 
ring in Tropical Mexico and reaching the Lower Rio Grande. 
495. Chaleo dermus, sp. — Seven specimens beaten from Clematis 
drummondii vines and foliage in palmetto jungle at Santo Tomas, June 
9th to 23rd. Distr. This species is also new to the United States fauna 
and is doubtless a Tropical Mexican form reaching this region. 
496. Acalles clathratus, Lee. — Very numerous on Opuntia lepto- 
- 7 - 
