76 [ September, 



DESCEIPTIONS OF NEW SPECIES OF SISTERIB^. 



BY GEOEGE LEWIS. 



Pl^sius l^vis, n. sp. 



Ohlongiis, postice parum convexus, niger, nitidus ; froiitis stria punctata 

 (punctis interruptisj ; pronoti stricB integrcE, interna laterali valide impressa 

 obliqua interstitio antice multo latiore ; elytrorum striis, 1 Integra, 2 et d 

 b revibus, pioictatis ; propygidio in medio subtiliter punctato ; prosterno antice 

 grosse punctato ; mesosterni lined marginali basali profunde impressd. 



Long. 6 lines. 



Hab. : Sadia, Assam. 



This species is easily recognised by tbe broader margin of the 

 thorax, and the deeply impressed stria at the base of the mesosternum. 



Pl^sitjs Mouhoti, n. sp. 



Ovalis,parum convexus, niger, nitidus ; frontis stria punctiformi, iji medio 

 7'etrorsnm acuminata; pronoti stria integra lateribi(s grosse -jmnctatis ; ely- 

 trorum striis 1 et 2 integris, 3 et 4i brevibus postice sparse punctatis ; prosterno 

 antice profunde punctato. Long. 7 lines. 



Hab. : Laos. 



Separated at once from all others by the punctuation of the 

 thorax. 



Pl^sius planulus. n. sp. 



Oblongus, niger, nitidtis ; fronte stria fere obsoleta ; pronoto stria mar- 

 ginali antice interrupta ; elytris striis, 1 late interrupta,2 postica dimidiata, 

 3 apiculibus ; prosterno Icevi. Long. 6f lines. 



Hab. : Nicobar Islands. 



Closely allied to Javanus — the broader thorax, more parallel 

 elytra, and impunctate presternum will distinguish it. 



Maceosteekus Maeseuli, n. sp. 



Late ovatus, complanatus, nigro-piceu", nitidus ; fronte plana, stria nulla. 

 Pronoti lateinbus subtiliter punctulatis, stria ma^'ginaH antice interrupta; 

 elytrorum striis 1 et 2 integris, '6 late interrupta, 4 apicali ; p7-opygidio sub- 

 tiliter, pygydio anterius sat for titer , punc.tatus ; mesosterno latissimo, laterale 

 marginato, antice bisimiato. Long. \\ line. 



Hab. : Angola. 



The mesostei'num is more straightened at the sides than in La- 

 fertei, which gives it the appearance of even greater breadth. Both 

 the pro- and mesosternum show fine punctures under a strong glass. 



