no FAAfTLT Tr. — CAEA BIT1.?':. 



Oui- siii;ill('sl iiKMiihcf oT tlic gviuis: coiniuon throughout the 

 State. Often found in autumn on flowers of goldenrod (Soli- 

 dago). April 4-Oetober 27. 



XXVII. LoxANDRUS Leo. 1852. (Gr.. "oblique + male.") 



Flattened, elongate-oblong or ovjil. l)lack or piceous beetles of 

 medium or small size, possessing the i-liaraeters of the tribe Pteros- 

 tiehini. Differing from Pterostichii.s and allied genera by having 

 the front tarsi of males obliquely dilated; mandibles not sti'iate: 

 mentum tooth emarginate. The thorax is scarcely or not at all 

 narrowed behind and has the basal impressions single, linear and 

 straight and the front transverse line distinct, very close to the 

 apical margin. The wings are always present and there is one 

 dorsal puncture on the third interval just behind the middle. Al- 

 though they are shining and often more or less iridescent, they are 

 r-arely with color marivings other than the piceous or yellow shades 

 of the antenna' and legs, and. as a result, are very difficult of sep- 

 aration. They live 1)eneath stones, logs and bark, especially that 

 of oak. usually in damp locaticms, and when uncovered run very 

 swiftly. The following are tlie jM'incipal papers treating of the 

 genus : 



LeConte. — "Synopsis." iit Journ. Phil. Acad. Nat. Sci., II, 

 1852, 250. 



L^'CV/»ie.—" Synoptic Table," in Pi-oc. Amer. Phil. Soc, XVII. 

 .S75; and in Bull. Brook. Entoin. So.-.. Ill, 1880, 19. 



About twenty speci(\s are known from the United States, six of 

 which have been taken in Indiana, while another may occur. They 

 belong to that division oF the family in which the side margin of 

 1 he thorax is not flattened toward the liiiul angles. 



KEY TO INDIANA SPECIES OF l.OXA.XDKl S. 



'/. Larger, J)-13 mm. 



'*. I-ejis, or at least tlic til)i;i' and tai'si. reddis]! hmw ii ; elytral strije 

 imiictate. 

 r. 'I'lmrax (Hic-liaH' wider tli.aii long; len.i^tli \\.'< \-\ iiiin. 



170. RECTUS. 



cr. 'i'lierax very slitrldlx- wider tliaii loug : feiiUfi-a often pi.-e ais ; lenjitli 

 !»-l(t mm. 171. mi.noh. 



hh. I.egs wli lly lila(l< or piiv ns; elytral stri;p not i)nnctate. 

 (1. Thorax wider (li.in Iniii^. its hind angles rectangular. 



172. nREVicoT.i.is. 

 (III. 'rimr.-ix Inngei' than wide, hind angles obtuse. 17."!. isKRA'rui s. 



nil. Smaller, not over 7.7 nnn. 



c. Elytra nnit'oi-m l>lacU or piceous; legs jiale to dark reddish limwii. 



174. ACiiiis. 



