Mr. Westwood on new Insects. 123 



maxillse in this sex furnished with the hook as well as in the 

 females. All my specimens of Figulus and Cardanus, W., are 

 also similarly provided with the hook, but I have not distin- 

 guished between the sexes ; so that I cannot affirm, although I 

 fully believe, that both sexes of those two genera are also fur- 

 nished with a hook, and consequently that the description 

 of Mr. MacLeay of the genus Figulus is erroneous. 



The genera in which I have found neither sex furnished 

 with the hook are Ceruchus, Platycerus, Ceratognathus, W., 

 Syndesus and Rhyssonotus. 



In Lepidodes, W., a new subgenus of Lucanus which exhi- 

 bits several of the characters of Pholidotus and Rhyssonotus, 

 I found the unique female in Mr. Melly^s collection to be de- 

 stitute of a tooth. 



I also found the females of Chiasognathus and Sphenogna- 

 thus similarly destitute of the hook, although, from their close 

 relationship with Pholidotus, I fully expected to find that they 

 possessed it. 



XVI. — Insectorum novorum Centuria, auctore 

 J. O. Westwood, F.L.S. 



Decadis primce Coleopterorum Synopsis*. 



Carenum, Bon. ; C. Spencii. Subopacum, nigrum ; tibiis anticis 

 valde palmatis, elytris excavationibus rotundatis numerosis tri- 

 plici serie (in utroque elytro) ordinatis; spatiis intermediis ele- 

 vatis. Long. corp. lin. 9. Nova Hollandia. Mus. Melly. 



Helota, MacL. ; H. Thibetana. ^Enea, lateribus cupreo-tinctis, 

 valde rugosa et punctata tuberculisque oblongis distincta, elytris 

 guttis 4-elevatis fulvis, antennis piceo-luteis, femoribus fulvis, 

 apicibus aeneis, tibiis fulvo piceoque annulatis. Long. corp. lin. 4. 

 Habitat Thibet. Mus. Melly. 



TRiPLATOMAf, Westw., in GrifF. An. K. ; T. apicalis. Nigra, lsevis, 

 prothoracis lateribus luteis macula oblongo-ovali nigra ; elytris 

 fascia valde angusta ante medium alteraque pone medium (in 

 medio interrupta) et subobliqua luteis ; apicibus apiceque ab- 

 dominis runs. Long. corp. lin. 9J. Habitat Africa tropicali. 

 D. Raddon. Mus. nostr. Elater ccecus, Fabr., Pal. B. Col. pi. 

 7. f. 4. valde affinis. 



Sternotomis, Perch. (Sternodonta, Dej., Lap.) ; 5. amoena. Nigra, 

 opaca, pronoto maculis duabus mediis lateribusque, scutello, 

 maculis lateribusque elytrorum viridi-lacteis, maculis duabus in 



* Figures and detailed descriptions of these insects are prepared, and will 

 be published hereafter. 



f Krotylidae oblongoe, palpis maxillaribus simplicibus. 



