164 STAPHYLINID.E. [Aciucliaris, 



"body soraewliat widened behind ; legs short and rather stout, 'testaceous, 

 tarsi short. L. H mrii. 



Male with the sixth segment of hind body elongate, broadly impresaed 

 longitudinally, and v/ith the apex emarginate in a semicircle. 



Under sea- weed, &c., usually below high-water mark ; very rare ; PIvmouth (Reading- 

 nnd WoUaston) ; it has also been taken quite recently (March, 1886) by Mr. J. J. 

 Walker at Falmouth " on the irader.sides of large stones sunk in the sand in places 

 where a little trickle of fresh water came down from the clifts above." 



HURVUSA, Erichson. 



This genus contains four European species, and a few from Chili, 

 I^orth America, &c. ; they are usually associated with ants, 



IS. laticollis, Heer {linearis, Maerk.). Of a rather dull ferruginous 

 or pitchy-red colour, with the head and base of elytra darker, and a 

 broad pitchy black ring before apex of hind body which is testaceous ; 

 head much narrower than thorax, antennae reddish with the last joint 

 and the basal joints lighter, third joint a little longer than second, 4-10 

 gradually thicker, the penultimate ones very strongly transverse, la.st joint 

 plainly as long as the two preceding together ; thorax much broader 

 than long, narrowed in front, broader at b:ise than elytra, but with the 

 posterior angles obtuse and not produced as in Homoeusa and Dinarda, 

 finely, thickly, and somewhat rugosely punctured ; elytra a little longer 

 tlian thorax, finely and rather roughly punctured ; hind body long, 

 narrowed towards apex, finely and thickly punctured in front, less 

 finely and a little more strongly behind ; legs reddish-testaceous. L. 3 

 mm. 



Male with the sixth segment of hind body furnished with a small 

 raised keel, seventh sinuate in middle of apical margin. 



In rotten wood; rare; Loughton (Essex); Higbgate ; Shirley, near Croydon 

 (taken by Dr. Power running at the bottom of a beech tree infested by Cossus) : 

 according to Mulsant and Key it is found in the frass of old trees in company with 

 Formica fuliginosa and /wsca. 



IiSFTUSA, Kraatz. 



In its widest sense this genus is made up of several sub-genera, and 

 contains upwards of one hundred species, which are chiefly found in 

 Europe and the Mediterranean region ; they bear a strong outward 

 resemblance to certain species of Homalota; many are found under bark. 



1\\e:\2Lrv?ioi Leptusa fumida is described by Fauvel, Ann. Fr. 1862, p. 87, and 

 that of L. analis by Perris, Ann. Fr. 1853, p. 563 : they appear to be closely allied 

 to the larvEB of Thl(BOfora, and are found under much the same conditions ; the larva 

 of L.fumida appears to have the eighth abdominal segment prolonged over the ninth as 

 in P. corticalis, whereas in L. aiialis it is obliquely truncate and not prolonged ; in 

 the latter larva the anal appendage is 1 ng and very narrow, and the cerci exceed it in 

 length ; in the former the cerci are very short, and there is no trace of an anal 

 appendage ; the colour appears to be whitish with the head and apical segments of 

 abdomen reddish. 



