72 EBOTYmm 



surface of the metasternum and its episterna, and especially that of the anterior part 

 of the prosternum, is a character not to be found in the true Mycotreti. The legs are 

 slender. The antennae are long and thin, with a lax three-jointed club ; the latter in 

 Tritoma is closely articulated and short. The different species are pretty little parti- 

 coloured insects, red and black, and are less convex and less compactly built than the 

 Tritomce. I should include in this genus Mycotretus trvplacoides, Crotch, and some 

 other species. 



1. Faratritoma dimidiata. 



Oblongo-ovata, nigra, capite, prothorace elytrorumque dimidio Tbasali lsete runs, his punctato-striatis, striis 

 integris : capite prothoraceque creberrime, distincte, prosterno subrugose, pectore parcius, punctatis ; elytris 

 circa scutellum interdum nigricantibus ; antennis fuscis, articulis duobus basi runs. Long. 4 millim. 



Hab. Mexico, Cerro de Plumas (Hoge), Capulalpam, Juquila (SalU). 



In this species the head, thorax, and basal half (or rather more) of the elytra are of 

 a fine blood-red ; the elytra are sometimes black round the scutellum, sometimes only 

 exhibiting an indistinct blackish stain in that region, or they are wholly red ; the 

 scutellum, the underside of the body (the head and prosternum excepted), and the 

 apical part of the elytra are quite black ; the legs and antennae are black with a fuscous 

 tinge, the latter have two joints at the base red and the two following them are 

 obscurely red also ; the tarsi are clothed with fuscous pubescence. 



2. Paratritoma divisa. (Tab. IV. figg. 9, 10, 11.) 



Oblongo-ovata, nigra, nitida ; elytris (tertia parte apicali excepta) leete sanguineis ; capite antice, antennis 

 (clava excepta), pedibus, prothoracis margine laterali, elytrorum epipleuris abdominisque apice, flavis. 

 Long, vix 4 minim. 



Hah. Mexico, Esperanza, Jalapa, Cerro de Plumas (Hoge), Toxpam (SalU); 

 Guatemala, near the city, Capetillo, Zapote (Champion) ; Panama, Volcan de Chiriqui 

 (Champion). 



Less evenly ovate, more attenuated behind, and with the head more exserted than 

 the preceding species. The head and thorax are thickly and distinctly punctured ; 

 the prosternum is very thickly but less rugosely punctured than in P. dimidiata. The 

 underside of the head is yellowish, except in the middle ; the palpi are testaceous. 

 Prosternum not compressed in front, the process wide and only margined at the apex r 

 the marginal line not produced in front of the coxae. Mesosternum smooth in the 

 middle, but with the sides and episterna coarsely punctate. Abdomen very obsoletely 

 punctured, infuscate at the base, but becoming indeterminately testaceous towards the 

 apex. Legs rather long, yellowish-red, with the exception that the coxae are black. 

 Elytra punctate-striate ; there is a short scutellar stria (more distinct in this species 

 than in P. dimidiata)^ this being quite separate from the sutural stria. Antennae 

 rather long, fully as long as the head and thorax ; the last three joints only are black, 

 the base yellow, the intermediate joints becoming obscurely yellow. P. divisa varies a 



