Dec , 1904.] SCHAEFFER : NeW CoLEOPTERA. 221 



slightly arcuate, widest at about apical third, apices separately rounded ; disk slightly 

 depressed, covered with small granules, transversely confluent at basal third, obliter- 

 ated at basal region, which is more shining, red, with two large black spots on each 

 side becoming largely confluent in most of the specimens. Underside and legs black, 

 feuiora at base and sometimes the first ventral segment at sides, or the first two or 

 three segments at sides and middle red. Length, 4.5-7 mm. 



Brownsville, Tex. (Las Boragos). Types, six specimens in the 

 Museum of the Brooklyn Institute. 



The spotted forms resemble quad?'iuotatiiiu, but differ by the 

 densely and roughly sculptured thorax, and the first iQ.\v ventral seg- 

 ments more or less red ; quadriguttatiis and quadrinotafus have the 

 underside entirely black in all the specimens I have seen. I have 

 taken about 15 specimens of this fine species on the flowers of the 

 mesquite, but only a few with the spots well defined, in the rest these 

 are confluent and in some specimens the elytra is black with a narrow 

 space at base and side margin red. In regard to the distinctness of 

 the two species qiiadrinotatns and quadriguttatiis (if they are correctly 

 identified ) I have some doubt. In Dr. Horn's collection, as well as 

 in all the others I have seen, the form with black thorax is qiiadri- 

 puiictatum and with red thorax quadrinotatum ; but there are inter- 

 grades which connect these. 



Enoplium nigrescens, new species. 



Elongate, red, with erect not densely placed hairs, antennee, palpi, femora at 

 apical third, tibia? and tarsi black, each elytron with a broad black vilta, very distinct 

 at base, but gradually fading into red towards apex. Antennas longer than head and 

 thorax, with the intermediate joints as long as the first two joints of the club, black, first 

 joint beneath reddish. Head densely roughly punctured, sides straight at apical fifth. 

 Thorax broader than long, then arcuately narrowing to apex, apical and hind angles 

 rounded ; disk slightly convex, very densely and moderately coarsely punctured. Elytra 

 a little broader than the thorax at base, gradually widening to apical third, then arcu- 

 ately narrowing to apex, apices separately rounded ; disk feebly convex, coarsely cri- 

 brately punctured, punctures gradually but little smaller towards apex, a black broad 

 vitta, very distinct and intense at base but gradually fading into red towards apex. 

 Body beneath red, abdominal segments indistinctly fasciate with black, femora at apex, 

 tibiae and tarsi black. Length, 5 mm. 



Brownsville, Tex. (Esperanza Ranch). One specimen in the 

 Museum of the Brooklyn Institute. 



In a specimen collected by Dietz the black vitta is more distinct 

 than in the specimen taken by me and judging from this we may find 

 specimens with the vittas well defined from base to apex and going to 

 the other extreme, specimens may be expected with entirely red elytra ; 



