OHtJotiua.] STAPHYLINID.E. 171 



externally much resembles some species of Ilomalofa ; the other genus, 

 Diglossa, is very distinct by reason of its exceedingly long maxillary 

 palpi. 



I. Aiitennrc 11-jointed. 



i. Labial palpi long and slender, 2-jointed ; maxillary palpi 



with the second and third joints elongate DigLOSSA, Hal. 



ii. Labial palpi short, 3-jointed ; maxillary palpi \vith second 

 and third joints not elongate Hygkonoma, j?r. 



II. Auteunse 10-jointed Oligota, Mannh. 



DIGZiOSSA^ Haliday. 



The species belonging to this genus are characterized by their very 

 long four-jointed maxillary palpi, by having the thorax very strongly 

 contracted behind, by the anterior tibiae terminating in a produced spine 

 externally, and by the slender and abruptly retlexed claws ; they are very 

 few in number, and occur among shingle, &c., below high-water mark. 



1. Elytra plainly shorter than thorax ; insect apterous . . D. mersA, ^a?. 



2. Elytra as long as thorax ; insect winged D. SUBMARINA, Fairm. 



D. mersa^ Hal. Linear, entirely black, front parts dull, hind body 

 sliining ; head large, as broad as thorax, antennae rather shorty somewhat 

 moniliform, pitchy-red, or pitchy with base lighter, third joint much 

 shorter than second, penultimate joints plainly transverse ; thorax in front 

 as broad as long, truncate at apex, and strongly narrowed to base, where 

 it is plainly narrower than elytra, very finely and thickly punctured ; 

 elytra evidently shorter than thorax, finely and thickly punctured ; hind 

 body feebly Avidened behind, sparingly punctured ; legs pitchy red with 

 femora usually darker. L. H-2 mm. 



Under shingle, and on sand below high-water mark ; I have also found it on the 

 wing settling on large pebbles, &c., in the sun, like Phytosjis .spinifer ; local, and usually 

 <onsidered rare ; JSouthend ; Sheppy; Weymouth; Hunstanton; Cleethorpes, Lincoln- 

 shire; Tenby, South Wales (in numbers); Ventnor, Isle of Wight (in numbers, 

 trapped in small pools on the rocks on a sunny day in April) ; Scotland, very local. 

 Forth and Clyde districts ; Ireland, Baldoyle. 



D. submarina, Fairm. (siimatorullis, Eey). Distinguished from 

 the preceding by having the elytra as long as thorax, and by the hind 

 body being strongly enlarged behind, and more closely punctured ; the 

 thorax also is more constricted at base, and the insect is furnished with 

 wings. L. l|-2 mm. 



Has apparently occurred in Ii-elaud, having been sent by Mr. Haliday to M. Javet. 

 (^Vide Eut. Mo. Mag. xx. 168.) 



KVGROlfOniA, Erichson. 



The single European species contained in this genus strongly resembles 



