new or little knoivn Cetoniidaj. 145 



Prctaetia andwiianaruin, n. sp. 



P. atra, sujara opaca, siibtus nitida, elytris aurantiaco-variega- 

 tis, apice spinosis, $ . Long. 21-23 mm. 



Head short, clypeus quadrate, shining black, punctured, 

 centre convex, apical margin slightly elevated and sinuous; 

 antennas brownish-red. 



Thorax black, opaque, convex, basal margin strongly trisinu- 

 ous, lateral margins slightly raised. 



Scutellum black, opaque, elongate, apex obtuse. 



Elytra black, oi)a<iue, several small spots close to the lateral 

 margin befoi'e the middle and one larger and angular Ijehind the 

 middle rich orange, sides and apical portions faintly punctured, 

 apical margin strigose, suture elevated posteriorly and acutely 

 produced at the apical angle. 



Pygidium convex, deep brown, opaque, faintly and sparsely 

 punctured, apical margin fringed with short brownish hairs. 



Beneath shining black, punctured at the sides ; mesosternal 

 process short, much dilated and rounded at the apex ; legs 

 shining black, punctured and strigose, anterior tibia? with three 

 lateral teeth, the upper one almost obsolete, anterior femora and 

 hinder pairs of tibia? fringed with broAvn hairs, tarsi short and 

 stout. 



Female larger and more robust, with some small orange spots 

 at the sides of the thorax, the elytra slightly costate behind, not 

 produced at the apical angle, the orange markings larger and 

 supplemented by an elongate spot near the base, some small 

 ones near those on the lateral margin, a group of irregular spots 

 just behind the middle and close to the suture, and a similar 

 group nearer the apex, pygidium shining black, transversely 

 strigose, the underside more closely punctured. 



Hab. Andaman Islands. Coll. Janson. 



A very varialjle species not obviously allied to any other of 

 the genus, several specimens now before me from Mr. Higgins's 

 collection differ considerably in the extent. of the orange mark- 

 ings, the most conspicuous being a male which is entirely black, 

 with the exception of a minute spot on each side of the elytra, 

 also a female with the basal spot almost obsolete, only two small 

 spots on the disc, about the middle, and the apical group enthely 



