146 STAPHYLiNiDiE. [Mj/i'mecajwra. 



MVRMSCOPORA, Saulcy. (Xenusa, Muls. et Eey). 



The two s2:)ccies contained in this genus have until lately been united 

 Avith Tachyiisa ; they differ in their very large head, narrow neck, more 

 parallel and depressed form, shorter and less slender legs, &c., and also 

 in their habitat. 



Length 3 mm. ; anteniiEe long with penulthuate joints some- 

 what longer than broad M. UVIDA, Er. 



Length 2 mm. ; autenuaj short with penultimate joints evi- 

 dently transverse M. sulcata, Kies. 



TH. uvida, Er. Depressed, parallel, front parts very finely punctured 

 and pubescent, black, rather shining ; head very large, as broad as thorax, 

 strongly narrowed in front of eyes, antennae long, lighter or darker red, 

 second and third joints of about equal length, 4-10 gradually a little 

 shorter and thicker, but not transverse ; thorax subquadrate about as 

 long as broad, narrowed in front to meet the neck of thorax, broadly im- 

 pressed longitudinally in middle ; elj^tra "plainly broader than thorax, 

 and about as long or somewhat longer; hind body parallel sided rather 

 distinctly and not closely punctured, especially behind ; legs pitchy or 

 pitchy-red with tibice and tarsi usually lighter. L. 3 mm. 



Male with the thorax more broadly impressed than in female. 



In decaying seaweed and among shingle on the coast, often below high- water mark ; 

 local but sometimes in great abundance where it occurs ; Whitstable, Rochester, 

 Sheerness, Southend ; Southsea; Hythe ; Southampton; Dawlish ; Isle of Wight, in 

 the greatest profusion in early spring, flying in the sun and settling on the rocks and 

 pebl)les at Ventnor; Northumberland and Durham districts, rare, sea-coast near 

 Hartley in October ; not recorded from Scotland ; the single northern record is some- 

 what curious, and seems to require confirmation. 



"Sil. sulcata, Kies. Very like the preceding but much smaller and 

 narrower with the antennae much shorter in proportion and having the 

 penultimate joints transverse, and the last joint more oval ; the elytra 

 are somewhat longer in proportion to the thorax, and the thorax is more 

 narrowed behind. L. 2 mm. 



Found under the same circumstances and often in company with the preceding ; 

 not so common perhaps but more widely distributed ; Whitstable ; Rochester ; South- 

 sea ; Weymouth; Isle of Wight; Falmouih ; Watermouth (Devon); Dawlish; 

 Hunstanton and Heacbam, Norfolk (in abundance in the latter locality) ; Scarborough 

 (Cornelian Hay); Northumberland district, rare; Scotland, rare, Clyde district 

 " under seaweed near Corrie in Arran" (Sharp). 



BORBOROPORA, Kraatz. 



This very distinct genus has somewhat of the facies of a Scopxus, 

 but is more nearly allied to Falariria : it may be distinguished from any 

 known genus of the Aleocharida? by the very large subquailrate head, 

 and by its long and slender mandibles, of which the right hand one only 

 has on the inner side below the middle a very large strong tooth, the 



