EROTYLIDAE. 147 



on the sides , and episterna punctate. Legs black , coxae 

 and tarsi pitchy-red. 



This is the only Jritoma I have seen from Africa. (Q/r- 

 totriplax senegalensis Crotch is an Amhlyopus which may 

 be re-named rotundatus , the latter being a MS. name 

 by which it is known to collectors). 



There is a single specimen only. 



Pseudotritoma, n. g. 



Corpus breviter ovatum fere hemisphaericum, valde con- 

 vexum. Antennarum clava oblonga, pubescens, triarticulata , 

 articulo octavo transverso , articulis quarto ad septimum 

 parvulis , hand latioribus quam longis , tertio elongato. Oculi 

 subtiliter granulati. Palpis maxillaribus articulo apicali securi- 

 formi haud lato. Prosternum medio elevato, apice acuto. 

 Linese abdominales et metasternales distinctae , tenues , im- 

 pressee. Tibiae haud multo dilatatae. Tarsi sat longi , haud 

 ampliati, articulo apicali precedentibus subsequali. 



Type Tritomidea (?) nigrocruciata Crotch. 



Species such as Crotch's T. chrysospila and T. nigrocruciata 

 cannot be referred to Motschulsky's genus Tritomidea , as 

 Mr. Crotch has himself noted (Cist. Ent. Vol. I. p. 469). 



The insect I now describe from Sumatra agrees closely 

 generically with the latter, and as it is necessary to em- 

 ploy some generic name for these species , I propose Pseudo- 

 tritoma. 



I can only give the characters provisionally , because all 

 the species are unfortunately unique. It is very clear that 

 a series of genera for allied forms will have to be made; 

 and I would desire here to withdraw from Tritomidea the 

 insect described by me in Vol. VII, p. 257, of the Notes from 

 the Leyden Museum under the name T. atripennis , reserving 

 further critical remarks on the genus till I have been able 

 to examine more specimens of eastern Erotylidae. 



Notes from th.e Leyden ]VIuseu.in , "Vol. X. 



