136 the entomologist's record. 



rotundatus. In this series of nineteen specimens only one had at all 

 intermediate punctuation, so that there was no question of the 

 punctuation varying. I now mixed up the specimens again, and, by 

 examining the front tibiae only, I, with ease, picked out the same nine 

 specimens of H. nidicola as I had done before. On looking at the 

 labels of these specimens, I found three were from the Island of 

 Sheppey (probably taken by Commander Walker in an old owls' nest), 

 and the remainder were labelled "ex coll. Harding." The specimens of 

 G. rotundatus were from various localities, but none from the Island of 

 Sheppey or from Harding's collection, so that this bears out my state- 

 ment that these two forms are not taken in company. 



Cis dentatus, Mellie, a species of Coleoptera new to Britain. 



By H. St. J. K. DONISTHOEPE, F.Z.S., F.E.S. 



Nigro-piceus, convexus oblongus pubescens. Prothorax aequalis, 

 in maris antice protensus et bidendatus, angulis anticis subacutis, 

 posticis rotundatis. Elytra creberrime et subtiliter punctata (Ann. de 

 la Soc. Ent. de France, 1848, p. 324). 



The introduction of this species to our list is due to my friend, 

 Mr. K. S. Mitford, who took a 5 specimen, last July, at Sandown, Isle 

 of Wight, by beating he thinks. Mr. E. A. Waterhouse, in looking over 

 his (Mr. Mitford's) Isle of Wight captures, came across this specimen, 

 which was unknown to him, and suggested it should be referred to me. 

 I soon found it was nothing in our list, and eventually I ran it down 

 in Acloque as C. dentatus, Mell., and, on looking up the original 

 description, I found it agreed well with the insect. Mr. Mitford then 

 obtained specimens from abroad, which confirm my identification. 



It comes next to C. bidendatus in the section that has the body 

 oblong, the anterior angles of the thorax advancing towards the eyes, 

 and the elytra pubescent. From C. bidentatus it may be known by the 

 fact that the thorax is contracted towards the front, and the punctua- 

 tion is much closer and finer, whereas, in the former, the thorax is 

 nearly as broad at apex as at base, and the punctuation is coarser, and 

 much more widely separated. C. dentatus bears a superficial resem- 

 blance to G. alni, but the latter is much more shiny, besides having 

 the anterior angles of the thorax rounded, and not advancing toAvards 

 the eyes. The known distribution of this species appears to be the 

 Alps, France, and Switzerland. 



OLEOPTERA. 



Coleoptera in the Ealing district. — In working burrows of Cossus 

 during January of this year, I had the good fortune to secure one 

 specimen of the somewhat rare Staphylinid, Quedius ventralis, Ar. 

 The specimen is a very handsome one, owing to the abnormal colora- 

 tion of the elytra. The latter have their lateral margins broadly 

 ferruginous in colour (of a similar tint to the hind-body), the sutural 

 region being darker. The tree from which the specimen was taken 

 was a poplar, situated close to Ealing Common station. Hylesinus 

 vittatus, F., I took in numbers out of a dead elm stump, in Perivale 

 Park, during early January, in company with its larva. — H. C. 

 Dollman, F.E.S. , Bedford Park. May lUh, 1907. 



