Coleopterous Fauna of Lower Rio Grande Valley. 69 
bronze, rest dull bronze brown with a greenish lustre. Underside more 
bronze and less greenish. Distr. Known only from Lower Rio Grande 
region. 
209. Acmaeodera flavomarginata, Gray. — Fall, in his recent revision 
of the genns, gives a range for this species which would indicate its 
presence in the Lower Rio Grande region. Distr. It occurs from South- 
west Texas to Southeast California, and the Cape region of Lower Cali- 
fornia. 
210. Acmaeodera rubronotata, Laf. and Gory. — Fall gives habitat as 
Texas along the Mexican border. It may reach the Lower Rio Grande. 
211. Acmaeodera pulchella var. mixta , Lee. — One specimen (7 mm.) 
taken by Wickham in June. A larger specimen (10 mm.), thought to 
be this variety, was beaten by Wickham in palmetto jungle, June 27th. 
It is much broader and stouter, with the lateral posterior yellow of pro- 
thorax very distinct and conspicuous. Distr. The typical pulchella 
ranges from Pennsylvania to Florida and west to Eastern California. 
The variety mixta occurs from Nebraska and Kansas to New Mexico, 
Texas, and Mexico. 
212. Mastogenius , n. sp. — One taken on corn at Santa Maria, Texas, 
May 7th. Length, 3-J mm. Bluish-black, oval-elliptical, of elegant 
form, evenly rounded in outline anteriorly, slightly tapering posteriorly. 
Entirely black, with a bluish tinge especially above. Shields of protho- 
lax delicately reticulate, elytra delicately punctured. Distr. Known 
only from Lower Rio Grande region. 
213. Agrilus lecontei , Saund. — One beaten from foliage in palmetto 
thicket at Santo Tomas, June 27th. This species is peculiar to Geltis, 
according to Schwarz. Distr. New Jersey to Texas. 
214. Agrilus macer , Lee. — One specimen of this large and beautiful 
species was beaten by Wickham from vines in woods near Rock’s Resaca, 
June 26th. Det. Wick. Distr. Known only from Texas, and peculiar 
to Celtis J according to Schwarz. 
215. Agrilus addendus f Crotch. — Taken on leaves and stems of Pro - 
so pis juliflora at Reynosa, Tamaulipas, May 16th. Distr. Texas to 
Arizona, Lower California, and Mexico. 
216. Agrilus palmacollis , Horn. — Three specimens bred from dead 
fig twigs broken from trees in February, issuing March 12th, March 
19th, and April 7th. Distr. Southern Texas and Southern Arizona, 
according to Schwarz. Doubtless occurs in Mexico on the fig. 
217. Taphrocerus, n. sp. — On& taken on leaves of Lantana camara 
June 5th, and one on cotton at Santo Tomas, June 7th. Length, 4 to 
4-J mm. Color cupreous brown or metallic brownish-greenish above, 
merging into purplish posteriorly and greenish anteriorly. Underside 
