1917.] 145 



large, oblique, depressed, velvety patch (extending between the striae 3-9) on the 



outer part of the disc beyond the middle, and a broad space before and beyond 



it opaque and transversely wrinkled ; anterior trochanters (tig. 4 a) produce^d 



a blunt lobe beneath ; intermediate tibiae sinuously curved, broadly^ideued 



outwards, and excavate and sericeous within : posterior femora amied with 



a small tooth beyond the middle, and deeply arcuato-excavate bef.ween tUi?, 



and the base beneath ; ventral segment o broadly depressed in tl\e middle, 



subtriangularly produced at the apex, leaving the forcipiform l.n,terar~ portions 



of the sixth segment exposed ; median lobe curved upwards at the tip. 



• • ^^^j/AN PI 



2 . Antennae a little shorter, less serrate, joint 11 equalling 8-10 united ;'^*°"^ •■' 



eyes not so large, narrowly separated ; elytra with a small, oval, velvety patch on 



the outer part of the disc unaccompanied by opaque rugose spaces ; legs simple. 



Hab. : Brazil, Jatahy, Province of Goyas (types o£ Pic ; Pujol, 

 ex coll. Fnj). 



Specimens of three of the forms named by Pic, from Jataliy, 

 are before me, and they are certainly referable to one species, which is 

 variable in colovir, D. arcuatipes being the male (fig 4), with somewhat 

 similar characters to those of D. mon-ffrosipes Pic, 6 , from French 

 Guiana. An elongate, shining, narrow, subcylindrical insect (length 10- 

 11 mm.) ; the prothorax long, almost smooth, and obliquely grooved on 

 each side of the disc towards the base ; the elytra coarsely punctate - 

 striate, with conspicuous setigerous impressions along the first (sutural) 

 interstice, and one or two others at the apices of 3 and 5 ; and the legs 

 very elongate. The elytra ai-e black in D. inlaferalis, testaceous in their 

 basal half in nigroapicalis and arcuatipes, the femora and tibiae being 

 wholly testaceous in D. testaceipes. The var. D. atricoUis has the legs 

 coloured like the last named, and the prothorax black.* 



6. — Disema olivacea, n. sp. 



S . Very elongate, rather narrow, feebly shining above, shining beneath ; 

 piceous, the elytra with a green lustre, the elongate, opaque patch black, 

 the apices of the antennae ferruginous ; clothed with a few bristly hairs. 

 Eyes extremely large, almost contiguous. Antennae long, not very stout, 

 moderately serrate, joint 11 a little longer than 9 and 10 united. Prothorax 

 slightly wider than the head, perceptibly longer than broad, rounded at the 

 sides, constricted before the prominent basal margin, the transverse basal 

 groove deep; alutaceous, excessively minutely punctate (the usual coarse 

 punctures obsolete), obliquely compressed on each side of the disc posteriorly, 

 and obsoletely canaliculate. Elytra very long, gradually widening tu the 

 middle, and tliere more tlian twice the width of the prothorax, acuminate 

 posteriorly, the humeri somewhat tumid ; tinely punctato-striate to near the 

 iipex, the interstices feebly convex, 1 and 3 with four or five small setigerous 

 impressions scattered between the base and apex ; the opaque lateral patch 



* The roferinccs to the figures of D. inacroplera, D. xaidhostirjnta and D. inlaicndis were 

 omitted on pp. 14^, 144. 



