Rev. F. W. Horn on some Nondescript Insects from Assam. 589 
if I am not mistaken in the species, ther@ is a specimen in the Zoological 
Society's Museum, labelled as inhabiting Sumatra. 
Spec. 3. Lucanus Spenci. 
Long. unc. I, lin. 9. Lat. lin. 6. 
Ater; mandibulis exsertis basi robustis et unidentatis, apicibus furcatis. 
Caput anticé depressum, posticé convexum, disco punctulatum. Thorax glaber, 
nitidus, sub lente subtilissim? punctatus, lateribus subserratis. Elytra a 
basi ad apicem gradatim attenuata, punctulis crebris per totum discum 
impressis. Corpus infrà nigrum, pedibus concoloribus, tibiis quatuor 
posterioribus medio unidentatis. 
This insect was unique in the collection of Dr. Cantor: it is named in 
honour of Mr. Spence, the author of a valuable monograph on Choleva, pub- 
lished in the Linnean Transactions, and of other important entomological 
works. 
Spec. 4. LUCANUS CURVIDENS. 
Long. unc. I, lin. 9. Lat. lin. 63. 
Niger; mandibulis exsertis intüs dente curvato valido fer? ad basin posito. 
Caput valdé depressum, dentibus binis anticè prominentibus. Thorax glaber, 
margine undique elevato. Elytra nigro-picea, striato-punctata, interné 
subtilissimé punctulata, externè ad latera fortiter punctata et feré sca- 
brosa. Corpus infra nigrum, pedibus concoloribus. Tibiæ medic uni- 
spinosæ ; postice setosæ. 
This remarkably depressed species of Lucanus was presented to me by 
Lady Jones; at present it may be considered as unique. 
Spec. 5. LUCANUS BULBOsUS. 
Long. unc. I, lin. 6. Lat. lin. 6. 
Nigro-castaneus; mandibulis exsertis dentibus bulbosis armatis, apicibus 
acutis. Tas. XL. fig. 2. 
Caput atrum, depressum, punctulatum. Thorax capite latior, castaneo-nigri- 
canti inquinatus. Elytra concolora, thorace minora, ad apicem sensim 
4 H 2 
