Rev. F. W. Hope on some Nondescript Insects from Assam. 591 



Spec. 8. LucANUs omissus. 



Long. unc. 1, lin. 9. Lat. lin. 6. 



Castaneus ; inandibulis vald^ exsertis, apicibus acutis, dentibus 2 nigris sub- 

 basalibus aliisque 4 subapicalibus. 



Caput ante.nnis nigris, dentibus binis in vertice vald^ elevatis, foveaque inter 

 dentes vix fortiter impressa. Mandibulce vald^ exsertae, apicibus acutis, 

 dentibus binis nigris juxta basin quatuorque prope apicem positis. Thorax 

 punctatuSj margine omni elevato. Elytra castanea, marginibus tenuissimis 

 suturaque nigris. Corpus infr^ rubro-piceum, femoribus tibiisque conco- 

 loribus, tarsis nigris. Foemina adhuc mihi incognita. 



I have given the specific name of omissus to the above insect, as I at first 

 imagined it to be the same as a Javanese species named in the French cabinets 

 castaneus. On a closer examination it appears to be distinct, and is now de- 

 scribed. I have received it from Dr. Cantor : it appears to be of rare occur- 

 rence. 



Spec. 9. LucANUs serricollis. 



Long. unc. 1 , lin. 3. Lat. lin. 6. 



Ater politus ; mandibulis par^m exsertis sinuatis et punctatis. 



Antennae nigrse, articulis 6 ultimis cinerascentibus. 



Caput antic^ fortiter punctulatum, mandibulis pariitn exsertis sinuatis et punc- 

 tatis. Thorax convexus, antic^ et postic^ linea elevata insignitus, lateri- 

 bus serratis. Elytra glabra, nitida. Corpus mivh nigrum, pedibus con- 

 coloribus. Femora parum incrassata, tibiis vald^ lineato-punctatis et 

 unidentatis. Tarsi infra luteo-comati. 



The above insect appears to be the male of a hitherto unknown species of 

 Stag-beetle ; and it seems probable that when the female is discovered, it may 

 form the type of a new genus ; it belongs to the section which has five leaflets 

 forming the club of the antennae. 



