524 Mr. A. R. Wallace's Catalogue 



•in its double horn, while in colour it approaclies Cory- 

 pliOGcra, which contains the green species with a small 

 flat horn or none. Diceros is a group very characteristic 

 of the Archipelago, in which all the horned species are 

 found. Cory2)hocera is more abundant in India and 

 Africa. Neither of them extends into the Moluccas, 

 New Guinea, or Australia. 



* {Diceros, [err. DicJieros], Gory & Perch.). 



1. Hetekorhina bicoenis, Latreille. 



Getonia hicornis, Latr. Regn. An. t. iii. pi. 17, f. .4. 

 Diceros plagiatus, Gory & Perch. Mon. Get. p. 300, 



pi. 58, f. 3. 



Fa&.— Timor (Coll. Parry, B. M.). 



2. Heteroehina ploeensis, n. s. 



Nigra, nitida ; thorace utrinque macula magna trian- 

 gular! rubra ; elytris singulis macula magna oblonga 

 subquadrata flavo-testacea. Mas : cornubus duobus 

 divergentibus recurvatis. 

 Black, shining ; clypeus dilated, rounded in front and 

 slightly notched ; head of the male produced into two 

 slightly divergent upcurved horns about as long as the 

 thorax, head of the female nearly as in H. hicornis figured 

 by Westwood (Arc. Ent. pi. 36, f. 8c), but the short 

 horn is entire ; head deeply punctured ; thorax convex, 

 finely punctured, the sides from the eye to near the 

 outer angle blood-red, which colour extends in an irre- 

 gular triangle to near the middle of the base ; scutellum 

 triangular, nearly equilateral, with scattered punctures ; 

 elytra punctate-striate and with scattered punctures, the 

 disk covered by an elongate pale yellow patch, leaving a 

 broad border at the base and apex, but a very narrow 

 one at the sides ; pygidium and the last abdominal seg- 

 ment blood-red ; the sides of the thorax beneath the 

 posterior coxee, and a spot on the posterior femora, red ; 

 sternal process elongate, abruptly bent up between the 

 anterior pair of legs. 



Length, male 11 lines, female 10 lines. 



Hah.— Floves (Coll. Wall.) ; ? Celebes (Coll. Parry) . 



