310 G. n. HORN, M. D. 



M. elegans, n. sp. pi. IV, fig. 12. — Black, shining, with short cinereous pub- 

 escence; hind angles of thorax, humeral spot of elytra and small transverse 

 Bpot at apical fourth bright red. Head convex,'densely covered with unibili- 

 cate punctures, front rounded, vertex with shallow impression. Anteniire 

 sub-serrate, second and third joints small scarcely equal to the fourth, joints 4-;S 

 nearly equal and sub-serrate, joints 9 — -11 cylindrical the last equal to the pre- 

 ceding. Thorax slightly longer than broad, feebly narrowed in front, sides an- 

 teriorly moderately rounded, at base nearly straight and gradually divergent, 

 anterior angles not prominent, hind angles acute and unieariuate; disc convex 

 densely covered with umbilicate punctures. Elytra as broad as prothorax, 

 sides feebly rouiided gradually narrowing to apex, surface moderately convex, 

 striate, strife punctured, intervals flat, densely but finely muricated. Body be- 

 neath black, punctured and sparsely pubescent. Legs black, tarsi piceous. 

 Length .42 inch ; 10.5 mm. 



The red spot at the hind thoracic angles is irregular in outline 

 but includes the entire angle above and below. The humeral spot is 

 large extending along the elytra for one-half their length irregular in 

 outline at tip but not involving the first two sutural interspaces and 

 not extending on the epipleurse at humerus ; in the centre of this is 

 a small black spot on the fifth stria. • The red spot at the apical fourth 

 is transverse, broader externally not attaining either suture or mar- 

 gin. 



The unique before me is a male, collected by Mr. Cl.ibb, in the 

 southern Coast Range, of California. 



M. Rogersi, n. sp. pi. IV, fig. 9. — Black, sh'ning, moderately robust, sparsely 

 clothed with short yellow pubescence. Head moderately convex densely punc- 

 tured. Antennse rufous at base, brown in the last six joints, not as long as 

 thorax. Thorax black, shining, sparsely but evenly punctulate, convex, and 

 with a slight impression in front of middle on each side of the disc ; longer than 

 broad ; hind angles acute, not divergent and strongly unicarinate. Elytra 

 slightly more than twice as broad as long not wider at base than thorax, feebly 

 narrowed to apex: surface convex, moderately striate, strioe punctulate, inter- 

 vals feebly convex and rather closely punctured ; color, orange yellow, with 

 small scutellar space, at middle a broad band widest [at suture not attaining 

 the margin, at apical three fourths on each elytron an arcuate band attaining 

 margin and suture, black; sides of elytra with very narrow black line along 

 the apical two-thirds; epipleurce orange yellow, black at humeral end. Body 

 beneath black, closely punctulate. Legs entirely rufous. Length .34 inch ; 8.5 

 mm. 



This species resembles in form an Elater of the cordlfer group, 



but is rather more convex. It may easily be distinguished from all 



our species of Mccjapenthes, by its system of coloration. The two 



bands described above are united along the suture by a narrow stripe. 



The anterior band does not attain the lateral margin except by a very 



narrow line. 



