772 FAMILY xxxvTT. — elaterid.t:. 



about throo inches in length, siibdeprps^sed, and has a row of pale 

 yellow sjxiN along middle of back and another each side. In the 

 dark these glow very l)i-illianily with a gi'eenish-\'ellow phosphores- 

 eent light. ll(^nshaw claims that this is not the lnrva of M. picens. 

 but that of a species of PJiengodes. 



1471 (451G). Melanactes morio Fab., Ent. Syst., Emend. Suppl., 1708, 138. 

 Resembles picens in form and structure; differs mainly by characters 



given in key. The thorax is proportionally shorter, being as broad as long 

 and is somewhat more coarsely punctured. liength 22-2G mm. 



Vigo and Pai-ke counties; rare. June 12-June 17. 



1472 (4517). Melanactes tuncticoleis Lee, Proc. Phil. Acad. Nat. Sci., 



VI, 1852, G8. 

 Elongate, rather slender. lilack, shining. Thorax longer than wide, 

 somewhat narrowed in front, slightly rounded on sides, which are less 

 strongly margined than in the two preceding species; disk rather finely and 

 sparsely punctured, more densely on the sides ; hind angles slightly di- 

 vergent. Elytral intervals subconvex, finely and rather densely punctu- 

 late. Length 18-21 mm. 



jMarion. Vigo and Knox counties; scarce. ^lay 28— June 25. Oc 

 curs beneath rubbish. 



1473 (4518). Melanactes consors Lee, Trans. Amer. Phil. Soc, X. 1853. 



495. 

 Elongate, robust. Black, not very shining. Thorax not longer than 

 wide, as wide at middle as at hind angles, more convex than in any of the 

 preceding species; sides broadly rounded, strongly margined; disk densely 

 and coarsely punctured, median dorsal line not distinct, somewhat smooth. 

 Elytra slightly narrower than thorax, more obtusely rounded at apex than 

 in any except viceus; striiie distinctly punctured; intervals slightly convex, 

 finely [lunctulate, transversely wrinkled. Length 23 nnn. 



A^igo County; rare. June H). A single specimen taken froin a 

 blackberry bush. Described from Nebraska. 



Subfamily III. PEROTHOPINAE. 



In this subfamilx- the nuteiuia' are well separated at base and 

 arise from small pits ix'tieath well-marked frontal ridges, at a dis- 

 tance in front of the eyes; the mouth is inferior; labrum transverse, 

 curved in front, closely united with the clypeus ; prosternum slightly 

 lo])ed in front, the s[)ine very short; front coxa' small, globular, 

 without trochantin ; middle c(>\;e oval with a small trochantin; hind 

 coxa' transverse, the !)lates l)r(iadl>- dilat''d on the inner side; tarsal 

 claws with ("»mb-lik-c teeth. Tlic subfamily is represented by the 

 single genus : 



