436 Mr. G. Lewis on 



what similar to P. de/ormis from the Audamau Islands ; the 

 sixth joint of the antenna is triangular. 



Ilab. Chiuzenji. Eight male examples. There is one 

 female in the British Museum, taken by Mr. Maries. 



Xanihochroa Waterhousei, Harold. 



Xanthochroa Waterhousei, Har. Col. Hefte, xiv. p. 93 (1875) ; id. Abb. 



Brein. p. 133 (1876) ; Deutsche ent. Zeitscbr. p. 360 (1877) ; Heyden, 



/. r. p. 355 (1879). 

 Xantlwchroa cyayiipennis, Mars. Ann. Soc. Ent. Fr. p. 483 (1876). 



Hab. Yokohama, Osaka, Tokio, Miyanoshita, Junsai, 

 Sapporo, and other places. 



There is a small race of this species which measures only 

 8—9 raillim. — var. hicostata — in which the antennae and legs 

 are always a clear yellow. It occurs in the neighbourhood of 

 Chiuzenji, where I took eight examples. 



The species of this genus have an antenna of twelve joints 

 in the male, eleven in the female, and one spur on the anterior 

 tibia. 



Xanthochroa atriceps, sp. n. 



Elongata, parallela, griseo-pubescens ; capita nigro ; thorace rufo- 



flavo ; elytris subcyaneis ; antennis pedibusque infuscatis. 

 L. 10-11 miU. 



Elongate, parallel, clothed with grey pubescence ; the head 

 black, uneven, and sparsely punctured between the eyes, 

 punctures thicker set nearer the neck ; the thorax reddish 

 yellow, vaguely punctured, slightly constricted before the 

 base ; the scutellum obscurely brown ; the elytra somewhat 

 obscurely blue, densely clothed with grey pubescence, rather 

 more coarsely sculptured than those of X. Waterhousei, Har., 

 and the apex more acute than in that species ; the antennse 

 dusky, with the palpi and basal joints paler ; the legs infus- 

 cate, joints palish; the sterna and abdominal segments dusky. 



Hab. Chiuzenji. Two examples taken in August. 



Xanthochroa ainu, sp. n. 



Elongata, parallela, obscure fusca, griseo-pubescens ; antennis 



pedibusque partim dilutioribus. 

 L. 13| mill. 



Elongate, parallel, obscurely dark brown ; the head some- 

 what small, shining, faintly and sparsely punctured, with a 



