but no othei' species of the genus. A very small patch of the allied but very 

 dissimilar looking plant, Cardamine amara, growing by the side of a drain in a 

 swampy thicket, yielded, however, by persistent sweeping, eight or nine specimens 

 of C. suturellus, and on the same plant I also found Phyllotreta tetrastigma. The 

 Kev. W. Tylden, many years ago, took C. suturellus at Hythe, Kent, on Cardamine 

 pratensis (Ent. Mo. Mag., ser. i, vol. vi, p. 33). Mantura ohtusata occurred rather 

 freely by sweeping, apparently coming off Spircea ulmaria, and Thyamis agilis was 

 again found, but very rarely, on Scrophularia aquatica. — James J. Walkee, 23, 

 Eanelagh Road, Sheerness : May 8tk, 1894. 



Pselaphus dresdensis, Sfc, at Armagh. — On Friday, January 12th, as it was a 

 fine mild day, I took my water net and set off for MuUinure to stir up the water 

 beetles. On arriving there I found, somewhat to my surprise, that there was a 

 considerable flood in the meadows ; there was not much refuse being cast up, but I 

 got a small amount in my water net. On sorting this refuse I found, to my delight, 

 three specimens of Pselaphus dresdensis therein. This was encouraging, so I took a 

 bag the iiext day and made my way again to the flood, to see what more refuse I 

 could get. There was little, and I could not fill my bag. Quality, however, fully 

 atoned for lack of quantity. I took, by careful examination, three dozen Pselaphus 

 dresdensis out of this one bag of rubbish ; the curious thing was that other Psela- 

 phidce were scarcely repi-esented. There were one or two P. Heisei, an odd Tychus 

 niger, and a few Bythinus puncticollis. I seemed to have come on a regular 

 " pocket " of P. dresdensis. Besides these I got but little, nor need I mention any, 

 save Myrmedonia collaris, Gymnusa brevicollis, and Lathrobium terminatum. On 

 that day month (February 18th) there was a tremendous flood in MuUinure, conse- 

 quent on the very heavy rain of the preceding days. Again I sallied forth armed 

 with my bags and net. This time there were lots of refuse, and I easily filled two 

 large bags and started for home. Finding the bags rather heavy to carry in my 

 hand, I slung them over my shoulder, with the result that before I reached home I 

 was a kind of animated waterfall. However, the thought of P. desdrensis sustained 

 me, and hastily dofiing my wet garments I sat down to interview my insect friends. 

 There were lots of beetles, but P. dresdensis was only represented by one solitary 

 specimen. But this time the other Pselaphidce were there in force ; Tychus niger 

 swarmed, Pry axis fossulata and B.juncorum were numerous, as also was Bythinus 

 puncticollis. Besides these I took a considerable number of Myrmedonia collaris, 

 also Bembidium doris, B. Clarki, B. Mannerheimi, Anchotnenus gracilis, Pterostichus 

 nigrita, Dromius linearis, D. melanocephalus, Cercyon quisquilius, Tachyporus 

 brunneu.i, Mycetoporus .^plendens, Cryptobiuni glaberrimum, Lathrobium quadratum, 

 Megarthrus depressus, a couple of Meligethes, an Atomaria which is like herolinensis, 

 and a specimen of Orthochcetes setiger, together with hosts of commoner species. 



I was very much struck by the absence of P. dresdensis in February, after its 

 abundance in January. Both lots of refuse were got in the same place, so that alte- 

 ration of locality could not be the cause ; evidently in January I hit upon the period 

 when they were abundant in the imago state. These imagines had apparently for 

 the most part died off by February, and the other species of the Family had taken 

 their place. This sort of fact helps to explain the ajjparent rarity of certain species. 

 Their apparent scarceness arises from the fact that we are unacquainted with their 



