NO. 1113. PROCEEDINGS OF THE NATIONAL MUSEUM. 401 



median line indistinct. Elytra rather coarsely and rngosely punctate, 

 the costie evident. Pygidium as long as broad, oval at apex, coarsely 

 and S[»arsely punctate. Metasternum with dense long hairs. Abdo- 

 men finely punctulate, sparsely along the middle. Claws strongly 

 cnrvate, with a strong median tooth. Last joint of maxillary palpi 

 ovate, not impressed. Length, 25 mm. 



M(de. — AuteuuiP wanting in the type. Abdomen flattened along 

 tbe middle; i)en ultimate segment near the margin with a strong, 

 nearly straight ridge, widely overhanging the whole length; last seg- 

 ment sparsely granulate, with a rounded, shallow fovea. Posterior 

 tibia' M'itli the inner si)ur slightly curvate, two-thirds the length of the 

 outer one. Claspers intermediate in shape between those of L. (jrandis 

 and L. nUiei, but differ from both in having an obtuse angulation on 

 the inner side of each branch near the base. 



Female. — Autennal club small, shorter than the funicle. Last ven- 

 tral broadly emarginate. Pubic process deej^ly cleft as in L. ull-ei. hnt 

 the i)lates are differently shaped, the superior ones not folded. 



Two examples, male and female, collected at electric light in Hot 

 Springs, Arkansas, by Doctor W. J, Karlsioe, and kindly presented to 

 the National Museum. 



Ti/pe.—^^o. 213, U.S.X.M. 



This magnificent species, second in size only to L. yrandior^ Linell, 

 differs at first sight from ]j. (jrandu. Smith, by wanting the smooth 

 coriaceous surface, and from L. vll-ei, Smith, by its much finer punctua- 

 tion. It comes very near L. quadrata. Smith, but the c]yi»eus is distinctly 

 emarginate. In color it is darker than L. hornii, Smith. A number of 

 Lachnosternas were collected at the same locality by Doctor Karlsioe; 

 among others, large series of L. prunina.i L. (jrandis (including individ- 

 nals Avith the thorax strongly sinuate before the posterior angles), and 

 a large black variety of L. arcuata. 

 Proc. X. 31. vol. xix 20 



