Mr. H. W. Bates’s Notes on Longicorn Coleoptera. 147 
head being not retracted in repose, the prosternum in front of 
the anterior haunches being of considerable length, and the 
front of the head much shortened; the anterior coxe differ 
also from the just-cited as well as all other genera allied to 
Amphionycha in being much less exserted and conical, the 
prosternum being in correlation wider between the sockets. 
In its robust filiform antenne it agrees with Hssostrutha. 
Apagomera triangularis. 
Apagomera triangularis, Germar, Ins. Spec. Noy. p. 493 (Saperda trian- 
gularis) ; Perty, Del. An, Art. Bras, t. 19. fig. 12. 
Rio Janeiro, Brazil. 
Apagomera suturella. 
Cylindrica, gracilis, niger, griseo-pubescens ; thorace fascia antica 
lateribusque flavis, linea dorsali et sutura elytrorum canis; cor- 
pore subtus vitta laterali fulva; thorace cylindrico subelongato, 
postice angustato; elytris subcrebre punctatis; antennis supra 
breviter pilosis, articulo tertio quam scapus paullo breviore et quam 
articulus quartus vix longiore; tibiis intermediis distincte emar- 
ginatis. 
Long. 4 lin. ¢. 
Parand, Brazil. 
Although closely related to A. triangularis by the form of 
the head, prothorax, and prosternum, this species recedes in 
points of structure which might be regarded as generic, viz. 
the much shortened third antennal joint and the notched 
middle tibiee. 
Apagomera azurescens. 
Robustior, cylindrica, nigra, pube tenui sericeo-grisea vestita, macula 
thoracis utrinque rotundata aurantiaca ; capite (2) subgloboso ; 
thorace brevi, transverso, medio utrinque tuberoso; elytris sub- 
sparsim punctulatis ; antennis articulis secundo ad quintum subtus 
dense et longe ciliatis. 
Long. 5 lin. Q. 
Brazil. 
The Amphionycha azurescens of Dejean’s Catalogue. In 
the short and laterally tumid thorax this species differs 
greatly from the type of the genus. 
EXULACHNESIA. 
Eulachnesia, Bates, Trans. Ent. Soc. 1872, p. 231. 
This genus belongs to the Ailrenicides by the non-retracted 
head, the lower part of which, in the typical species, is deci- 
