NORTH AMERICAN COLEOPTERA. 189 



EROTYLID^. 



L.A.1VOITRIA Latr. 



Ii. (livisa. n. sp. — Slender, black with slight tinge of bronze, anterior half of 

 thorax red. Head black above and beneath with slight bronze tinge, coarsely 

 sparsely punctate. Thorax about one-fourth longer than wide, apex and base 

 equal, sides very nearly straight, sparsely punctate, anterior half red, posterior 

 black, the line of division being very sinuous. Elytra with rows of moderate size 

 rather deeply impressed, closely placed punctures which become gradually finer 

 posteriorly and reach nearly the tip, intervals flat with a row of distant fine punc- 

 tures. Thorax beneath red, except at the posterior angles. Body beneath black, 

 very sparsely finely punctate, last ventral segment more coarsely punctate. Legs 

 black, smooth. Length .40 inch; 10 mm. (PI. 5, fig. 25a.) 



A species which might readily be supposed to be a variety o'i gracilis, 

 but the arrangement of color seems very constant. L. gracilis seems 

 always to have the head and thorax beneath entirely red, and while the 

 dorsal black vitta may expand to that the entire disc above is black, there 

 is never a tendency to divide the color transversely. 



Three specimens, Colorado aud New Mexico. 



liAlVGURITES Motsch. 



Ii. Iinea.t;U!>i Cast. — Body beneath entirely red. Antennae piceous, basal joint 

 red,. club very gradually formed, four-jointed. Head entirely red (a small occipital 

 piceous spot), above and beneath very sparsely finely punctate, supra-orbital line 

 rather distant from the eye. Thorax about one-fifth longer than wide, base slightly 

 broader than apex, sides nearly straight, surface smooth, impunctate, color above 

 red with a median entire vitta and very narrow side margin black ; beneath red, 

 a little more widely black at the sides than above. Scutellum piceous. Elytra 

 piceous with a basal spot on each side red extending about one-fifth of the elytra 

 but not well defined, disc with rows of feebly impressed punctures which become 

 obsolete near the tip ; sutural angle of elytra emarginate but not spinous. Body 

 beneath smooth, last ventral segment coarsely closely punctate at tip. Legs red, 

 tarsi and posterior tibise piceous ; upper side of anterior and middle femora striped 

 with black. Length .40 inch: 10 mm. 



This species differs from all in our fauna in the very oblique emargi- 

 nation of the sutural angle of the elytra (PI. 5, fig. 25b) and the an- 

 tehnal club of but four joints. 



One specimen, Arizona, occurs from Venezuela northward. 



COLYDIID^. 



SYNCIIITA Hellw. 

 S. dentata n. sp. — Piceous, opaque, moderately elongate. Head rather 

 coarsely granulate. Thorax nearl}^ square, very slightly najTower behind, apex, 

 truncate, base arcuate, margin rather coarsely 8-dentate and fimbriate, disc convex 

 with coarse tubercles. Elytra scarcely wider at base than the thorax, slightly 

 wider posteriorly, lateral margin serrulate, disc with rows of rather coarse granules 

 replacing the cost8e. Body beneath rugous. Length .10 inch; 2.5 mm. 



