BY ARTHUR M. LEA. 183 



deep, terminated between anterior amd intermediate coxse. 

 Mesosternal receptacle raised, semicircular, its apices touching 

 anterior coxae ; cavernous. Metasternum short, curved. Two 

 basal segments of abdomen large, intercoxal process wide, curved; 

 intermediate very small, feebly depressed below apical and dis- 

 tinctly below 2nd, apical not as long as 2nd. Lec/s short: femora 

 linear, edentate, the four posterior feebly grooved beneath, pos- 

 terior not extending to apex of abdomen ; tibife compressed, 

 feebly curved; tarsi rather thick, 3rd joint distinctly bilobed, 4th 

 feebly squamose. Short, subelliptic, convex, squamose, punctate, 

 tuberculate, apterous. 



The three species here described might perhaps be regarded as 

 forming one of the divisions of Poropterus, but as their position 

 is clearly intermediate between that genus and Petnsiris I have 

 considered it advisable to generically separate them. From 

 Porojjterus the species are excluded by their short broad form, 

 transverse prothorax, large 2nd abdominal segment and small 

 intermediates, and by the femoral grooving ; from Petosiris (to 

 which they are perhaps closer) by the much less flattened form, 

 much less sudden compression of the apical abdominal segments 

 by the elytra, feebly grooved and edentate femora, and by the 

 tarsi, especially the 3rd joint. All the species are black, the 

 antennae, tibial hooks, and claws more or less red. They are very 

 closely allied, but are certainly distinct; the following tabulation 

 of the species is not very satisfactory.* 



Elytral tubercles regularly disposed regularis, n.sp. 



Elytra! tubercles somewhat irregular both in size and 

 disposition. 



Elytra conjointly rounded at apex tumuhsiis, Pasc. 



Elytra feebly bifurcate at apex cur virostr is, n.s'p. 



MicROPOROPTERUs TUMULOsus, Pasc; Mast. Cat. Sp. No. 5443. 



(^Poropierus tumulosiis, Pasc.) 



Densely clothed with short greyish-brown scales, scales on 

 tubercles paler than elsewhere. Scales of under surface and 



* I scarcely think it desirable to give tabulations on characters of degree, 

 unless such are very strongly marked and unmistakable. 



