252 AMERICAN COLEOPTERA. 



This species is very closely allied to validus, but differs constantly 

 in elytral markings and the form of the elytra! apices. In validus 

 the markings consist of tliree transverse series of elongate spots, and 

 the apex is transversely sinuate with the sutural angle spiniform. 



(JHRYSOMELID^. 



Ijiiporod«'S semiflaviis n. sp. — Oblong; head, antenna', piotliorax, 

 under surface except the abdomen, and legs, yellow ; elytra metallic blue-green, 

 abdomen picescent; upper surface highly polished thioughout. Head very 

 slightly narrower than the prothorax at middle, eyes nioderateiy prominent, 

 vertex each side with a longitudinal arcuate row of three imnctures, the middle 

 one largest, the others minute ; surface otherwise impunctate. Antennte a little 

 longer than half the body, slender, second joint small, scarcely more than half 

 the length of the third ; three, four and five equal or nearly so and more than 

 three times as long as wide, outer joints gradually a little shorter. Prothorax 

 nearly as long as wide, three-fifths as wide as the elytra at base, sides broadly 

 arcuate, front angles narrowly obliquely truncate, hind angles small, dentiform ; 

 surface impunctate. Front coxse distinctly separated by the presternum; first 

 joint of hind tarsus a little longer than the next two. Length 3 mm. 



Dripping Spring, Organ Mts. (Cockerell). 



The type is a male, having the basal joint of the front and middle 

 tarsi strongly dilated. Of our previously described species none 

 have the basal joints of the antennse proportioned as in the present 

 one, though spretus and texanus approac^h it in this respect. In both 

 of these the fourth joint is distinctly longer than the third and sub- 

 equal to the second and third united ; they moreover differ much in 

 color, and texanus is further distinguished by the contiguous front 

 coxse. Bivittatus and varicornis alone agree with semiflavus in the 

 color of the head. 



Clisetociieina COStata n. sp. — Moderately broadly oval, piceous, with 

 distinct green-bronze lustre. Antennse rufotestaceous at Ijase {outer joints want- 

 ing), tibiae and tarsi pale. Head alutaceous, numerously punctate, punctures a 

 little coarser in the clypeal region. Prothorax scarcely one-third wider than 

 long, widest behind the middle, sides arcuate and a little nairowed in front, front 

 angles narrowly obliquely truncate, with slight post-apical angulations; surface 

 not alutaceous, punctuation rather fine, a little coarser near the base and sides, 

 punctures separated by from one to two times their own diameters. Elytra not 

 quite one-fourth longer than wide, basal width subequal to that of the prothorax, 

 sides divergent and nearly straight to basal two-fifths, where they are broadly 

 but distinctly subangulate, thence broadly arcuate and slightly convergent, apex 

 obtusely rounded ; surface alutaceous, punctures a little confused in the scutellar 

 region, intervals 3-5-7-9 rather strongly costiform. Beneath closely rather 

 strongly punctate. Length 2-3 mm.; width 1.4 mm. 



