Q4s [March, 



Hab. : 8. E. Borneo, Martapura (Doherty). 



This species is so extremely like the Central American C. vestitus 

 that the two might readily pass for one and the same. C. orientalis is, 

 however, more convex and shining, the punctuation is more definite 

 and easily appreciated, and the sinuatiou of the base of the thorax 

 is deeper. 



Cambridge : February, 1902. 



NOTES ON SOME COLEOPTERA OF THE BRENT VALLEY, 190L 



BY W. E. SHARP. 



The season which has just closed lias been the reverse of a favourable one for 

 the (Joleopterist A year witliout a spring, and in which winter carried well into 

 April, was succeeded by a hot and exceptionally dry summer, concluded by a cold 

 short autumn, has presented a succession of conditions singularly adverse to the 

 abundant distribution and increase of beetle life. Still, to the working Coleopterist, 

 no season or locality is quite unproductive, and during last April I was able to take 

 for the first time a number of species of llydradephaga and Palpicornia from some 

 ponds close to the course of the river Brent. As Prof. T. Hudson Beare^ in a 

 recent number of this Magazine (Ent. Mo. Mag., vol. xxxvii, p. 280), has noted most 

 of these, it will be unnecessary here to recapitulate them. To his list, however, 

 should be added as denizens of these waters, Anaccena bipuslulata, Berosus luridus, 

 and B. signaticoUis. These ponds, in which such species as Copelatus agilis, 

 Hydroporus granularis, and all the common Pkilhydri, were unusually abundant in 

 May, had become completely dry by the end of June, and remained absolutely 

 waterless till quite the end of October. I shall note with some curiosity what 

 effect a drought so prolonged will have on the beetle population in the ensuing 

 spring. 



Near the Brent river are many orchards and market gardens ; here heaps of 

 vegetable refuse accumulate towards the close of summer. These heaps during 

 autumn and on mild winter days swarm with the commoner, and maintain a 

 scattered population of some of the less frequent, Coleoptera. From such heaps 

 I took last year Celia silphoides, Medon melanocephalus, Stilicus fragilis, Copro- 

 philus striatulus, Hapalaraa pygmaa, lleterothops dissimilis, Philonthus quit- 

 quiliarius, Ulster 12-striatus, and Carpophilus hemipterus, the last an unexpected 

 resident in such a nidus. Anthicus antherinus was abundant in the late autumn, 

 while Tachinus subterraneus, Negarthrus depressus, and hosts of common Staphy- 

 linidce, were in immense abundance under the bark of elder near the ground. In 

 this orchard in November Prognatha quadricornis was common. 



A little marsh of an acre or two in extent close to the river has provided me 

 with a few species worth noting. At grass-roots in the winter, Pterostichus minor 

 was abundant, and tStenolophus vespertinus, rare j here I also took Bryaxis im- 

 pressa, Calodera alhiops, Stenus melanopus, Evcesthelus laviusculus, and 3Jyllcena 

 intermedia (?), and in June swept Corymbites tessellatus from the reeds, and 

 Strophosomus faber, Telephones thoracicus, and on one occasion Atomaria linearis 

 in immense multitudes, from the surrounding herbage. 



