108 Journal New York Entomological Society. t^'°''- xxix. 



This species is readily distinguished by the entire absence of the 

 post-median fascia of the corium. Occasionally the ventral lunate 

 vittse are somewhat obscured by the dense coating of fine hairs. It 

 should l)e placed close to litigiosits. 



Ligyrocoiis obscurus new species. 



Form rather narrow elongate, dull, sparsely setose; very closely resembling 

 Zeridoiiens (Perigenes) costalis Van Duzee. Head black, sparsely long setose, 

 with coating of fine impressed golden yellow hairs; apex of tylus reddish. 

 Antennae long, stramineous, extreme base of first, apex of second lightly, apical 

 half of third and all of fourth segment, fuscous ; apical half of basal segment 

 extending beyond apex of head, second segment two and one half times as 

 long as first, third about one third shorter than second -and subequal to terminal 

 segment. Pronotum dull black, sparsely setose, with the transverse constric- 

 tion shallowly, obtusely impressed, anterior lobe a little wider than long ; 

 posterior lobe little wider and except for humeral angles scarcely paler than 

 anterior lobe, rather closely and finely punctate ; lateral margin from the 

 humeral angles stramineous. Scutellum black, apex pale, posteriorly keeled, 

 closely punctate along the sides. Hemielytra infuscated, entire costal margin, 

 a streak outside of cla\al suture opposite apex of scutellum and a spot near 

 inner apical angle, stramineous-yellow. Membrane fuscous with some of the 

 veins basally and a few scattered spots, pale. Beneath piceous, the venter 

 densely coated with fine golden lunate vittse. Legs stramineous-yellow, fore 

 femora from about middle towards apex, hind femora apically, intermediate 

 femora more faintly and apices of all tibire infuscated. Fore femora armed 

 on the outer half with two series of spines, the inner series consists of three 

 larger spines, the first two just beyond the middle are set closer together, and 

 the third midway to apex, before and beyond the latter are some three or 

 four very small teeth ; the outer series consists of three or four minute teeth 

 towards apex. The hind tibia are provided with some ii bristles in each 

 side and the basal segment of the hind tarsus is a little over twice as long as 

 second and third together. 



Length, J' 7^, mm.; $ Syi mm. 



Type: (^ Plummers Is., Md., Feb. 8, 1905, collected by D. H. demons 

 (U. S. N. M.). Paratypes: 2 J'J' and 2 $5 Plummers Is.. Md. ; $ Cabin John, 

 Md., Feb. 9, 1914; ? Ogle Co., 111. (U. S. N. M.) ; 2 (^^ Plummers Is., Md. 

 (from O. Heidemann) ; (^ Kansas; 5 Cabin John Run, Md., Sept. 23, 191 1, col- 

 lected by Wm. T. Davis (my collection) ; (^ Plummers Is., Md., Sept. 21 ; $ 

 Cabin John, Md., Sept. 2, 1907; ^ Glen Echo, Md., Oct. 12, 1901. from the 

 collection of Mr. O. Heidemann (Cornell L^niv.). 



Very similar in appearance to Zcridoncns (Perigcncs) costalis 

 Van Duzee which species shows no trace of the lunate strigose vittae. 

 Furthermore in L. costalis the antennre are shorter with the first 



