Dec, 1908.] SCHAEFFER : NEW RhVNCHOPHORA. 219 



intervals convex, with a row of short, semi-erect setae. Body beneath clothed with 

 large white scales and on each side near apex a few narrow, elongate, decumbent 

 squamules. Length 2 mm. 



Brownsville, Texas. 



On each side of the prothorax are a very few narrow, elongate, 

 decumbent scales. In some specimens the whitish scales are more 

 numerous on the elytra than the pale ochreous scales. The apices of 

 the elytra are separately rounded but not as broadly as in our two 

 species of Sibinia. 



Tychius albidus, new species. 



Form of setosits ; reddish-brown, legs, beak and antenna; paler above and below, 

 covered with rather large white scales, intermixed on the elytra with narrow, elongate 

 recumbent scales, without erect setae. Head and basal part of the beak densely 

 scaly, rest of beak glabrous. Antennae inserted at about the middle of the beak, 

 funicle 6-jointed. Prothorax wider than long; sides almost parallel to about apical 

 third, thence arcuately narro-ving to apex, the latter constricted ; surface moderately 

 densely covered with large, rounded, white scales, intermixed with a very few nar- 

 row, elongate scales of the same color. Elytra about one-half wider than the base 

 of thorax ; humeri broadly rounded ; striae as wide or almost as wide as the intervals ; 

 surface sparsely clothed with larger, rounded white scales, denser on the sutural in- 

 terval and the humeral region, and narrower, elongate white scales on the intervals 

 which are numerous at sides and apex. Body beneath more densely covered with 

 large, oval white scales. Length 1.6 mm. 



Death Valley, April, t8qi, on Prosopis juliflora, collected by 

 Koebele and given me by Mr. E. A. Schwarz. 



It is possible that the large scales are easily lost and that in fresh 

 or well preserved examples the scales are more numerous than in the 

 specimen before me. 



Readily distinguished from any known species of Casey's group 

 IV by the form of the elytral scales. This as well as several of the 

 smaller species with 6-jointed antennal funicle have the elytral apices 

 more or less distinctly separately rounded which somewhat bridges 

 over the difference between the genera Sibinia and Tychius. In the 

 " Miologia" Mr. Champion includes all the Mexican species with 6- 

 jointed antennal funicle in Sibinia, which seems to me a better course 

 than the separation of Sibinia from Tychius on the form of the elytral 

 apices. 



Eulechriops pictus, new species. 



Rather robust, ovate, black, upper surface variegated with ochreous, white and 

 black scales. Beak slightly curved ; naked; smooth along the median line ; rather 

 densely punctate at sides. Antennae inserted slightly above middle ; second joint of 



