78 Mr. G. Lewis on 



jecting, we may assume that the singular humeral projections 

 in CUnidiiim and Rhysodes are not connected with the mem- 

 branous organs of flight, because they are equally prominent 

 in the apterous genus Glinidium as in the alate Rhysodes. 



By my journal I find that I captured a large number of 

 E-hysodid^ on the 19th April and again on the 23rd Decem- 

 ber, 1880, in the touchwood of old beeches and firs, and the 

 beetles associated with them were Stomonaxus, LeptocMrus, 

 Osorius, Hypuliis {two species), Platydema, Scaphidema (four 

 or five species of the last two genera, some unicolorous, others 

 maculate after the manner of the Erotylidse), Hypophloeus, 

 and some Cossonidee. Of these Stomonaxus Iceviventris, Bates, 

 a Carabideous insect which always lives in rotten trees, corre- 

 sponds best with Rhysodes in colour, and its front tibiee also 

 are notched somewhat in the same way ; but it is difficult to 

 connect any of these species together excepting in the fact of 

 their congregating in a common habitat. The Rhysodidse are 

 apparently less numerous in the tropical parts of Asia than in 

 the more temperate regions where deciduous trees are more 

 abundant, as I found but one species in Ceylon, R. taprohance, 

 Fairm., whereas by the methods I employed there for the 

 capture of insects certainly three would have been taken in 

 Japan. 



Out of eighty-seven specimens found in Japan twenty- 

 three only are males, and I cannot believe that this proportion 

 of the sexes is accidental, as the males are comparatively few 

 in all the species. Of thirty taken in Ceylon eleven are 

 males. 



In habits the Brenthidse do not correspond with the Rhy- 

 sodidse ; but amongst the Cucujidas Frostomis appears to 

 do so, though I have never found specimens of the two 

 families in one tree. Frostomis resides in the centre of rotten 

 trees and possesses the same moniliform antennae, with wliich 

 character also Leptocliirus and Osorius, which live in similar 

 places, approximately correspond. A trunk of a tree thrown 

 across a stream to form a bridge for the Tamils on a coffee- 

 estate at Dickoya, in Ceylon, was submerged for five months 

 during the wet season, and on the water lowering in April the 

 trunk was discovered and broken up, and several hundred 

 specimens of Frostomis Schlegelii, Olliff, were taken from it. 

 The specimens were collected by a coolie and brought to me 

 in an old meat-tin, and the destructive propensities towards 

 each other awakened in the insects by this unnatural situation 

 left very few perfect examples. 



The few species of cylindrical Cucujidte of tlie genus An- 

 cistria I brought from Japan were captured fortuitously, and 



