328 Mr. G. C. Champion on the 
PRIONOCERUS. 
Prionocerus, Perty, Obs. Coleopt. Indiz Orient. p. 33 (1831). 
This genus, type P. cwruleipennis, Perty, a common 
Malayan insect, is here restricted to the species with the 
antenne short and very strongly serrate, and the apical 
joint deeply excavate, in the two sexes. P. bicolor, Redt., 
belongs to it, and possibly one or two other Asiatic forms 
not represented in the collections before me. The two 
mentioned have a different general facies from the typical 
Idgiz, due to their small, narrow head and short, strongly 
serrate antenne. 
1. Prionocerus ceruleipennis. 
Prionocerus ceruleipennis, Perty, Obs. Coleopt. Ind. p. 33, t. 1. fig. 4 
(1831); Bourg. Ann. Soc, Ent. Fr. 1890, p. 175; Gorh. Ann. Soc. 
Ent. Belg. xxxix. p. 318 (1895). 
. Prionocerus JSuscipennis, Lewis, Ann. & Mag. Nat. Hist. (5) iv. 
p. 464 (1879). 
3. Prionocerus forticornis, Schaut. Hore Soc. Ent. Ross. xx _ p. 126 
1887). 
OF . Prionocerus brevicornis, Schauf. 1. c. 
¢. Anterior tarsal joints 1-3 witha comb along their inner 
edge. Genital armature (Pl. XI. fig. 1): lateral lobes very 
long, narrow and somewhat hooked at the tip ; median lobe 
broad, abruptly acuminate and sinuate at apex. 
Hab. Innta; Burma; Maayan Recion generally ; 
AnpamAn Is.; Japan; E. Arrica, Usagara (S. A. Neave), 
Usambara (Mus. Brit.) ; AusTRALIA (sec. Schaufuss). 
Bourgeois gives the sexual characters of this species at 
considerable length, but he omitted to notice the structure 
of the ¢ anterior tarsi. The elytra vary in colour—blue, 
violaceous, or green, rarely eneo-fuscous. The two forms 
named by Schaufuss, already sunk as synonyms by Bour- 
geois, are from the Philippines and Macassar respectively. 
P. fuscipennis, Lewis, from Yokohama, is an immature 3, 
with the elytra more obscurely coloured than usual, some 
specimens from Borneo and Manila in the British Museum 
being similar in that respect. A monstrosity, J, with three 
antennze and distorted elytra, has been figured and described 
by Keyl] (Tijdschr. voor Ent. lvi, pp. 1- 1p! pls. 1, 2, 1913). 
P. ceruleipennis has doubtless been introduced into E. Africa. 
About 200 examples are contained in the collections before 
me. 
