590 Rev. F. W. Hope on some Nondescript Insects from Assam. 



attenuata. Corpus infra nigro-piceuin, pectore rufescenti. Pedes ferno- 

 ribus rubro-corallinis, tibiis medio dente armatis, tarsis piceis, plantis 

 infra auricomis. 



The above insect is named bulbosus from the heads of the teeth of the man- 

 dibles being rounded, a peculiarity I have not observed in any other of the 

 Lucanidce: it was taken by Dr. Cantor in Assam, and is found also in the 

 Burmese territories. 



Spec. 6. LucANUs astacoides. 



Long. unc. 1, lin. 3. Lat. lin. 4. 



Castaneus ; antennis nigris, mandibulis exsertis intils basi denticulatis denti- 

 culis nigricantibus, apicibus acutis. 



Caput supr^ castaneum, vertice bituberculato. Thorax concolor, utrinque 

 nigro-punctatus, elytris capiteque latior, margine omni elevato. Scutellum 

 nigrum. Elytra castanea, marginibns tenuissimis suturaque nigris. Cor- 

 pus infr^ rubro-piceum, pedibus concoloribus, tibiis quatuor posterioribus 

 medio denticulatis tarsis chelisque nigris. 



I have named the above species astacoides, as its mandibles resemble closely 

 the claws of a lobster. 



Spec. 7- LuCANUS foveatus. 



Long. unc. 2. Lat. lin. 6. 



Castaneus ; mandibulis vald^ exsertis, apicibus acutis, dente ferfe medio for- 

 tiori, aliisque 4 eequalibus ante apicem positis. 



Caput atro-piceum, dentibus binis in vertice prominentibus, fovea inter dentes 

 for'titer excavata. Thorax punctulatus, margine undique elevato. Elytra 

 castanea, marginibus tenuissimis suturaque nigris. Corpus infra rubro- 

 piceum, femoribus rubro-corallinis, tibiis concoloribus et medio uniden- 

 tatis tarsisque nigris. Faemina adhuc mihi ignota. 



The above species appears to be tolerably abundant in Assam, as there are 

 several specimens in Mr. Griffith's collection; some of the individuals vary 

 greatly in size, presenting also different shades of a light and dark mahogany 

 colour. Lucanus pallidipennis and L. confusus, Hope, both from the island of 

 Java, appear to be closely allied to the present species. 



