210 Mr. J. O. Westwood's Descj'iptions 



Section LONGICORNES. 

 Genus novum. Erichsonia, Weslw. 



Corpus elongatum, parallelum, subcylindricum. 



Caput breve, transversum, prothorace vix angustiore ; facie per- 

 pendiculari, 4-carinata; clypeo in angulum inter mandibulas 

 producto, labrum occultanti. Oculi laterales reniformes. An- 

 tennae ante oculos prope mandibulas insertse, prothorace bre- 

 viores, articulis subserratis, apicalibus sensim gracilioribus. 

 Labrum baud visibile. Mandibulae breves, subtrigonas, apice 

 acutae, sub apicem bifidse, intus edentatae, basi intus parum 

 dilatalse. Maxillae breves, basi extus dilatatse, lobo apicali 

 elongato simplici longe setoso, lobo interno obliterato. Palpi 

 maxillares in scapum distinctum inserti, articulis 4 ; basa- 

 iibus brevibus subaequalibus, articulo apicali reliquis simul 

 sumtis fere aequali, oblongo-ovali. Mentum brevissimum, 

 transversum, medio marginis antici emarginato. Labium 

 parvum, integrum, setosum. Palpi labiales in scapos late- 

 rales insidentes, 3-articulati, articulo ultimo majori, paullo 

 curvato et precedentibus parum crassiori. Prothorax ob- 

 longus, angulis omnibus obtusis, disco 4-carinato. Elytra 

 protliorace vix latiora oblonga, parallela, basi truncnta punc- 

 tata ; apice rotundata. Pedes breves, crassi, tibiis ad apicem 

 bicalcaratis, calcari uno in pedibus anticis valde elongato, 

 tarsis angustis, valde setosis, articulo 3tio obcordato. Ab- 

 domen e segmentis quinque eequalibus constans. 



This insect has so singular a facies, that its real affinities 

 might be easily overlooked. Thus in its general shape, colour 

 and remarkably sculptured prothorax, it bears a strong primd 

 facie resemblance to Rhysodes and the allied genera ; yet its more 

 important characters prove that, notwithstanding the shortness 

 of the antennae, its legitimate position is amongst the Longicorn 

 beetles, and amongst these I know no other insects towards which 

 it approaches more closely than to Parandra and Spondylis. 



The general character of the underside of the head and trophi 

 is essentially that of the Longicorn beetles, but the carinated 

 head, and serrated antennae attenuated to the tip, as well as the 

 large hooked spur of the fore tibiae and the very short hind legs, 

 are especially characteristic. The tarsi are strictly pseudo-tetra- 

 merous, the third joint being heart-shaped, with the real fourth 

 joint very minute and fixed in the deep impression of the pre- 

 ceding joint; the terminal joint is nearly as long as all the pre- 

 ceding joints taken together. The elytra are 2^ times longer 



z 2 



