15G [J"iy. 



one and one-third times longer than thorax, together slightly longer than broad, 

 very finely and closely and somewhat rugosely punctured, with fine but rather 

 distinct greyish-white pubescence ; hind body somewhat dilated behind, very 

 finely but not very closely pvmctured, with fine, close and conspicuous greyish- 

 white pubescence ; legs short and stout. L. 1.5 — 1.7 mm. 



On account of the almost flat temples T. hemerinns would appear 

 to belong to the subgenus Troginus, Muls., but it differs from all the 

 other members of the subgenus, which Capt. Deville has most kindly 

 lent me for examination, in having very much smaller and less prominent 

 eyes. In general appearance and the punctuation of the elytra it most 

 resembles T. halophilus, Kies., but the absence of enlarged temples will 

 distinguish it from this species or any of its allies. 



I foimd two specimens of this very distinct species which had been 

 given to me some time ago by Mr. Day, among my series of T. halo- 

 philus, Kies. Mr. Day sends me the following note on its capture : — 

 " I foimd the species rather commonly on July 3rd, 1907, at Anthorn- 

 on-Solway, Cumberland, on the mudbanks of the estuary of the 

 E. Wampool. It occurred in company with Bledius atricapillus, Grerm. ; 

 in fact both species were dug out of the same burrows. What the 

 connection was — whether intentional or merely casual — I was not able 

 to determine, but from the size of the ] )urrows the Bledius was obviously 

 responsible for them. Possibly, as the day was dull and cold, the 

 smaller insect was simply using the biu-rows for shelter." 



Thinobitjs longicornis, sp. nov. 



Somewhat shining, black, elytra pitchy brown, legs piceous, tibia? lighter, 

 tai'si yellow ; head quadrate, parallel-sided, closely, very finely and somewhat 

 rugosely punctured, temples slightly longer than diameter of eyes, hind angles 

 well marked ; antennae long, not much shorter than head, thorax and elytra 

 together, slightly thickened towards apex, 3rd joint much smaller than 2nd, 

 about 1| times longer than broad, 4th-6th oblong, slightly longer than broad, 

 7th and 8th subglobose, 9th and 10th slightly transverse and larger than 8th, 

 11th very long, more than twice as long as 10th, parallel sided ; thorax strongly 

 transverse, scarcely broader, and more finely and closely pvinctured than head ; 

 elytra much longer than together broad, twice as long as and slightly broader 

 than thorax, punctuation as on thorax, covered with very short and close greyish 

 pubescence ; hind body as finely but not so closely punctured as elytra, with 

 rather long yellowish pubescence, last segment almost smooth and glabrous. 

 L. 2 mm. 



This species differs from all the other members of the genus in the 

 structure of the antennae, the slightly elongate 5th and 6th joints and 

 the very long last joint being characteristic. 



