Coleoptera from the Indian Empire. 417 



elytrorum latitudiiio, lateribus fortiter curvatis, antice vix angus- 

 tatis, aiigulis posticis vix perspicuis ; elytris ])rofiincle punctato- 

 striatis, iiiterstitii3 hcvibus ; pygidio fortiter punctato ; tibiis 

 anticis cxtus minute deuticulatis, dentibuscjue tribus validis 

 acutis armatis, tibiis 4 postcrioribus valde curvatis, tarsorinn 

 posticoruni articulo primo quam secundum distincte longiore. 



(S . Tibia antica subtus unispinosa, tibiis posticis gracilioribus 

 femoribusque posticis subtus dilatatis. 



Long. 4 5 mm. 



Ilab. Assam, Sudiya, Patkai Mts. 



Piceous black, with a slight metallic tino-e, and having tlni 

 liead and prothoiax coppery and the elytra decorated upon 

 each shoulder with a small round yellow spot. 



The form is short and compact. The head is closely 

 punctured and without visible sutures or elevations, but tlie 

 front margin is aruied with four teeth^ of whicli the middle 

 pair are the longest and most acute. The prothorax is 

 moderately closely punctured, but very shining ; it is as 

 broad as the elytra and not much narrower in front, with the 

 sides strongly and uniformly curved and the hind angles 

 obsolete. The elytra are strongly jjunctate-striate and the 

 pygidium strongly and rather closely punctured. The front 

 tibiae are strongly tridentate and very finely denticulate 

 between and above the teeth. The middle and hind tibife 

 are slender and curved, and the tarsi have the first joint 

 nearly twice as long as the second and the remainder nearly 

 equal. 



The male has a perpendicular tooth beneath the front 

 tibia, the hind tibia is longer, more slender and more strongly 

 curved than that of the female, and the hind femur is strongly 

 dilated, the flange forming an obtuse angle near the knee. 



Several specimens were collected by Duherty. 



Although tw^o species of Cassolus have already been de- 

 scribed by Sharp and Lansberge {G. niidus, Sharp, Siam, 

 and C. sumatraiius, Lansb., Sumatra), the very interesting 

 sexual characters have not yet been noticed. In the appendix 

 to this paper 1 have described another species in which other 

 sexual ditferences are found. I have not yet seen either of 

 the previously described forms, but the present insect appears 

 to be like C. nudus, Sharp, but sufficiently distinguished by 

 the yellow shoulder-spots and the puncturation of the pygi- 

 dium, which is closer than that of the prothorax. 



Panelus assamensis, sp. n. 



Castaneus, laevis, nitidus, breviter ovatus, postice latior : P. parvulo 

 simillimus, sed prothoracis parte posteriore laevigata, linea elevata 



