58 J. L. LECONTE, M. D. 



% . — Willi the .')(! and following joints of tlie antenna? bearing a long process, 

 which is basal in the od, medial in the 4th and ylli, but nearly apical in the 

 others. 



9 • — Larger and stouter, elytra nearly black, antenna; serrate. 



Found abundantly by Mr. Crotch, at Santa Barbara, flying about 

 buishes near a stream. Of" thirty-three individuals before me thirty 

 arc lualcs and only three females. The larva is subaquatio, and ac- 

 cording to Mr. Crotch resen)bles in appearance those of Piiej)hcii us and 

 Jlelichns. I have adopted the name aflS.Kcd to the species by Mr. 

 Crotch in honor of Mr. Henry Edwards, of San Francisco. 



MICROPIIOTUS Lee. 



.W. ail^^llKtllS. — Elon2;ate, brown testaceous, elytra darker, roughly and 

 densely punctured, elevated lines distinct, sides concave and broadly rnar- 

 gined near the buse; scutelluin and prothorax pale, the former channelled, 

 the latter rough longer than wide, truncate at base, rounded in a semiellipse 

 on the sides and tip, disc broadly conve.^ in front, margined very broadly at 

 Uxii sides, and more narrowly at the tip. Length ."28 — .4 inch ; 7 — 10 mm. 



%. — Eyes very large, convex, approximate, palpi long; antennae 9-jointed, 

 9lb joint with a small subulate point at tip; elytra long, entire; last dorsal 

 segment bisinuate at tip, last ventral produced into a long process at tip ; geni- 

 tal segment with slender lobes. 



9- — Eyes small, distant, head narrow, palpi less elongate; antcnnrc 8-jointed 

 with a small terminal subulate protuberance; elytra enlirely wanting, the 

 scutum of the mesothorax being an undivided plate; apical process of last 

 ventral short. 



Mariposa, Oregon ; Dr. A. Thevenet. This species though much 

 narrower in form, is similar in sculpture to M. dilatatm Lee, from 

 Lower Califdrnia. The fjn)ale of the last named species is unknown, 

 60 that the discovery of that sex in the present instance is more im- 

 portnat. The difference in the number of antennal joints is a remark- 

 able and hitherto unknown character in the family. 



MATIIETEUS, n. g. {Lampyridcc.) 



Body not convex, rather Lyciform, above confluently punctured, 

 strongly margined. Head concealed under the prothorax, short and 

 broad, eyes distant, convex, moderate in size, finely granulated ; an- 

 tennye inserted just in front of the eyes, distant, 11-jointed, strongly 

 pectinate, 1st joint triangular, hardly longer than wide, 2d shorter, as 

 wide as long, 3d triangular, inner angle acute ; 4 — 10 triangular, each 

 with an internal process as long as the joint and arising about the 

 middle, or beyond the middle; 11th joint flat, acutely sinuate near the 

 tip, which is also acute. Front concave behind the antennae, convex 

 iu front of them ; labrum transverse, broadly rounded iu front, dis- 



