744 FA^[ILY XXXVII. ELATEUIIXK. 



1405 (4301). (iiAPiiONYX QUIETUS y.-iy. Trans. Amer. Phil. Soc, VI, 1S3G, 

 1S4 ; ihiil. II, G22. 



Eldiii^Mtc. sU'iuler, convex. I'lacUisli-hrowii or iiiccons, rather densely 

 clothed wilh siiorl yellowish hairs; antenna- reddish-browu ; legs pale .\'el- 

 low. Clypeiis oblnsely rounded in front. Tliorax as in rccticollis, the hind 

 angles scarcely diverging. Tarsal daws with few rather robust teeth, 

 r.engtli 4.5-5 mm. 



Southern half oi' State. .Maisliall Coiiiity only in the inti'th; 

 frequent. INlarch 2r)-.]nne 10. Heaten from vegetation. 



XXXIII. Melanotis Eseh. 1820. (Gr.. "hlaek + back.") 

 This genus contains a numlier of small or moderate-sized click- 

 beetles, usually uniform dull bro\vn in color and having the elypeus 

 margined in front ; antenna^ serrate, with the first joint broad, the 

 second and third variable; prosternum lohed in front, the sutures 

 d(»uble and concave on outer side; hind coxal plates gradnally 

 dilated in^vards and toothed above the insertion of the thighs; tarsi 

 not lolxd l)eneath, the claws with distinct, comb-like teeth. The 

 males usually have the antennal joints pilose or clothed with erect 

 bristling hairs. 



The larva' of three or four of the species are among the most 

 destraetive of the wirevvorms. The adults usnally occur beneath 

 bark or on the foliage of trees, to which, their pectinate claws en- 

 able them to readily cling. They are so similar in form and hue 

 that they are very difficult to separate. There is no special litera- 

 ture on the genus, the descriptions lieing. widely scattered and many 

 of them doubtless synonymous, and the group has given me more 

 troul)le than any other genus treated in the paper. All the Indi- 

 ana specimens have been compared with such types and named spe- 

 cies as are in the Horn collection at Philadelphia and the LeConte 

 and INlelsheimer collections at Cambridge. Of the 45 species listed 

 frpm the ITidted States, 19 have lieen taken in Indiana, while 9 

 others are herewith described for the first time. For convenience 

 they are first separated into two groups aud these in turn into 

 species. 



KEY TO GROUPS OF INDIANA SPECIES OE MEL/VNOTUS. 



a. Third .ioint of anteniite but little if any longer than second, the two 



together almost always shorter thau fourth. (ii-oui) A. 



(Id. Third joint of antenme at least one-half longer than second, the two 



together equal to or longer thau fourth. Group B. 



Group A. 

 This group comprises seven of the 28 species. The third joint 

 of antenna' may be slightly longer than second. l)ut never one-half 

 longer. 



