36 Mr. H. W. Bates on the Longicorn Coleoptera 
shoulder to the suture and subapical margin, dark brown. Body 
beneath and legs dingy brown. 
Dry twigs, Santarem. 
3. Dorcasta occulta, n. sp. 
D. cylindrica, postice subobtusa, grisescens, brunneo variegata, re- 
gione scutellari fusco-nigra; elytris juxta apices abrupte declivi- 
bus, apice breviter suboblique sinuato-truncatis, angulis acutis ; 
capite infra minus retracto. Long. 2? lin. 
Head less elongated and less retracted beneath than in the 
typical species, clothed with dingy greyish tomentum ; central 
line deeply impressed ; upper lobe of eyes attenuated. Antenne 
thick, filiform, sparsely clothed with short bristles, longer under- 
neath; basal jomt oblong, angular. Thorax convex, sparingly 
punctured, tawny grey, with whitish streaks on the sides. Ely- 
tra cylindrical, subobtuse and abruptly declivous near the apex, 
the latter briefly sinuate-truncate, both angles slightly produced 
and acute ; surface free from bristles, coarsely punctured, partly 
in lines, dingy grey-tawny, with brownish spots, a large patch 
over the scutellar area, and sometimes a curved spot on each side, 
in the middle, dark brown. Body beneath and legs tawny ashy. 
Santarem, on dry twigs. 
4. Dorcasta cenosa, n. sp. 
D. cylindrica, postice subobtusa, griseo-fusca; thoracis lateribus et 
elytrorum maculis cinereis; elytris apice oblique sinuato-trun- 
catis, angulis prominulis acutis; capite infra minus retracto. 
Long. 1 lin. 
Head less elongated and retracted beneath than in the typical 
species, rusty-brown, clothed with dingy-grey tomentum ; central 
line deeply impressed; upper lobe of eyes attenuated in the 
middle, the extremity, on the crown, raised. Antenne filiform, 
clothed throughout with short sete; basal joint thickened 
abruptly from the base, oblong: colour dingy brown. Thorax 
subcylindrical, slightly tumid in the middle; surface punctured, 
rusty grey-brown, sides pale ashy. LHlytra linear, narrowed a 
little before the apex, the latter obliquely sinuate-truncate, with 
both angles acute; surface coarsely punctured, greyish rusty 
brown, with an ashy streak near each shoulder, and a discoidal 
ashy line divided into spots by brown specks. Body beneath 
and legs rusty brown. 
Santarem, on dried twigs. 
Group Hippopsine. 
Genus Mrcacera, Serville. 
Serv. Ann. Soc, Ent. Fr. iv. p. 43. 
Megacera agrees with Hippopsis in the greatly elongated form 
