loir.i 143 



ami •") bearing setigerous impressions tlirougliout their lengtli, the opaque 

 hiteral, velvety patch large in S (sec. Maklin), small in 5 ; the antennae 

 ( 2 ) ^^(^ feebly serrate, joint 11 equalling 8-10 united ; the prothorax is 

 about as long as broad, smooth, obliquely grooved on each side of the 

 disc towards the base, and canaliculate in front ; the legs are infuscate, 

 tlie bases of the femora excepted. 



2. — D/'scma hfmaeiilafa. 



(S . Disema Mmactdaia Makl., Act. Soc. Fenn. x, p. 647 (1875). 



(^ . Antennae long, the joints becoming' acutely serrate outwards^ 

 11 equallins" 7-10 united; eyes extremely large, almost contiguous; elytra 

 with a larjie, ohlonp-oval, opaque, velvetv-brown patch on the outer part of the 

 disc beyond the middle : posterior femora slightly thickened towards the apex» 

 aul hollowed thence to the base beneath ; ventral segment 5 broadly, deeply, 

 arcuato-emarginate at the apex, leaving the genital armature partly exposed. 



Length 10^-12, breadth 2,V3 mm. 



JIah. : Brazil, Rio de Janeiro {Dr. Sahlheiy, Jan. 1851, type ; 

 Miers, in Mu^i. Oxon.). 



A specimen, 6 , in the Oxford Museum agrees with Maklin's 

 description of D. himaculata. It is very like D. thoracica, except that 

 prothorax is more elongate, and the elytra are testaceous, with the suture 

 (rather broadly), base, and apex infuscate. The males of these two 

 insects, that of D. thoracica being undescribed, may exhibit more 

 pronounced differences. 



3. — Disema macropiera, n. sp. 



S- Very elongate, narrow, acuminate posteriorly, moderately shinipc ; 

 testaceous, the prothorax rufescent, the head and antennae, the elytra with 

 the apex rather broadly (in one specimen the suture also thence to near tlie 

 base) and the opaque subLiteral patch, and the abdomen in part or entirely, 

 black ; the head and elytra with a few, erect, bristly hairs. Head almost 

 smooth between the setigerous punctures, the eyes extremely large and 

 almost contiguous; antennae long, the joints becoming sharply serrate out- 

 wards, 11 sinuous, asperate within, equalling 7-10 united. Prothorax long, 

 not wider than the head, moderately rounded at the sides ; rather dull, obso- 

 letely punctate, obliquely compressed on each side of the disc behind the 

 middle, the basal margin tliickened and much raised. Elytra extremely elon- 

 gate, about one-half wider than the thorax, subparallel to beyond the middle, 

 produced at the tip ; closely, rather finely crenato-strinte, the interstices mere 

 or less convex, 1 and 3 witli setigerous impressions scattered throughout their 

 length, the opaque lateral scar elongate, placed at a little before the dark 

 apical patch. Ventral segment 6 simple, truncate at the tip. Legs very long, 

 simple. 



Length 13, breadth 3 mm. 



