THE COLTDIID^ OF JAPAN. 71 



Club of antenna very loosely articulated. Head densely and 

 finely granulose, quite dull, sides a little raised. Thorax oblong 

 quadrate, being slightly longer than broad, with straight sides, 

 granulose, quite dull, on each side with two costge, in addition to 

 the side margin, extending the whole length, the two inner a 

 little convergent behind, between them with two short longitu- 

 dinal elevations on the front margin. Elytra rather more than 

 twice as long as the thorax, quite dull, with regular series of 

 closely -placed angular punctures, the alternate interstices a little 

 raised, the inner one more than the others, and all of the costee 

 more distinct near the extremity. Underside dull, coarsely 

 punctate ; ventral plates granulose. 



The specimens vary somewhat in size and colour ; frequently 

 there may be seen an obscure reddish humeral mark. 



A fine series was obtained in May 1881 at Hitoyoshi and 

 Yuyama from Fungi on logs. 



Xtjthia niponica, 



Xuthia niponica, Lewis, Ann. Nat. Hist. 1879, p. 462. 



Angustula, subcylindrica, cinnamomea, opaca; prothorace oblongo, ia- 

 sequali tantum subcostato; elytris seriatim fortiter punctatis, interstitiis 

 alternis tantum obsoletissime elevatis. Long. 2^ millim. 



Antennge short, with broad loosely articulated club, the ninth 

 joint broader than those preceding it, the basal joint in part visible 

 from the front ; sides of the head evidently incrassate. Thorax 

 about as broad as the elytra, a little longer than broad, very 

 convex transversely, straight at the sides, just perceptibly nar- 

 rowed behind, with a broad indefinite impression along the 

 middle not extending to the base, outside this an irregular shallow 

 impression extending the whole length ; sides finely margined. 

 Elytra with a series of closely-packed punctures ; the second 

 interstice from the suture very obscurely costate, the other al- 

 ternate interstices scarcely perceptibly elevated ; they are very 

 slightly declivous obliquely before the apex. 



This is an anomalous species, which will probably have to form 

 a separate genus between Xuthia and ItJiris ; the antenna are 

 less covered at the base than in Xuthia, the clypeus being smaller 

 and the form of the mouth more approximating to the Colydium- 

 type ; the metasternum, too, is more elongate. 



Nagasaki ; a single example in Mr. Lewis' bungalow, August 

 1868. 



