136 GEO. H. HORN, M. D. 



ish testaceous, sliading to brcwnisli, with blue surface lustre. AntenniB pale 

 palpi piceous. Head piceous, the frout and labrum pale. Thorax bioader than 

 long, not narrowed in front, sides feebly arcuate, angles all distinct, disc moder- 

 ately convex, with a vague ante-basal impression and sometimes a faint median 

 line, surface indistinctly punctate and alutaceous. Elytra oblong-oval, widest at 

 middle, surface minutely alutaceous, sparsely indistinctly punctate, a marginal 

 series of punctures larger. Body beneath colored as above, sparsely pubescent. 

 Length .10 — .15 inch. ; 2.5 — 4 mm. 



Male. — First joint of anterior and middle tarsi distinctly dilated. Last ven- 

 tral segment flattened, truncate at apex with a broad process from the middle 

 of the apical edge and at right angles with it, this process is either obtuse or 

 incised at apex ; first ventral between the coxse convex. 



Female. — Tarsi not dilated ; first ventral not convex. Last ventral truncate, 

 leaving a small retractile segment exposed. 



The variation in color has been indicated above, some specimens 

 being a dull indigo-blue, which gradually disappears, the sides and 

 suture retaining the color the longest. The specimens more or less 

 testaceous are the most abundant. 



Longitarsis nigripalph Lee, founded on a rather poor specimen, 

 is doubtless synonymous with this species. 



Occurs from Pennsylvania and Virginia to Iowa and Kansas. 



li. senilis Say, Journ. Acad, iv, p. 87; ed. Lee. ii, p. 228; Crotch, Proc. 

 Acad. 1873, p. 70; Horn. Trans. Am. Ent. Soc. 1889, p. 271; tincta'Lec., Proc. 

 Acad. 1865, p. 206. 



As the species is described sufficiently as the last named citation 

 it will not be reproduced here. 



The male has a similar last ventral to that of fascida, but the 

 process is shorter and acute. 



Occurs from Pennsylvania to Illinois. 



]!nii!iCEL,L,A]VEO[JS COLEOPTEROUS STUDIES. 



BY GEO. H. HORN, M.D. 



The few pages which follow contain descriptions of some new 

 Coleoptera, which, from their exceptional nature, seem worthy of 

 separate treatment, although all of them are rare and from remote 

 regions. 



The discovery of a new genus allied to Schizopus and Dystaxia is 

 very interesting, as these genera form a group of Buprestidte pecu- 

 liar to the extreme southwestern regions of our fauna. 



The Dacoderus, from Texas, has also a special interest in bringing 

 the genus further east and rendering the locality of D. dorninkensis 

 less improbable, doubt having been expressed by one of my valued 

 correspondents in France of the correctness of the locality. 



