38 STAPHYLINID^. [Oxijpoda. 



In Siindpits, &c. ; not uncommon; Shirley, Wimbledon, Dulwich, Eslier, Miekle- 

 liam, Woking, Southend; Biigliton; St. Leonards ; Isle of Portlnud ; Kiiowle, neur 

 Birmingham ; less conuuon further north ; Northumberland district, rather rare, 

 Tynemouth, on the Irthing, &c. ; Scotland, rare, Solway district only. 



O. tarda, Sharp. This species is very closely allied to the preceding, 

 but is rather larger and darker coloured ; the antennae are proportionately 

 a little shorter ; the elytra are slightly longer, and the base of the hind 

 body is not paler than the middle ; in all other respects it is similar to, 

 and hardly appears to be more than a variety of, 0. brachyptera. 

 L. 2j ram. 



Rare ; salt marshes near Dumfries, Scotland. 



O. misella, Kr. A small and rather broad species, of a darker 

 colour than either of the two preceding, thorax, elytra, and base and 

 apex of hind body very dark reddish brown, head and rest of hind body 

 black or almost black ; head large, nearly as broad as thorax, antennae 

 very short, fuscous (except in somewhat immature specimens) with base 

 lighter, third joint shorter than second, 6-10 strongly transverse ; elytra 

 shorter and almost narrower than thorax ; hind body parallel-sided until 

 near apex, with very fine punctuation which is slightly less dense on the 

 apical segments ; legs clear testaceous. L. l^ mm. 



In sandpits, &c. j rare ; Shirley, Wickham, Wimbledon. 



In the shortness of its antennae this species resembles 0. annularis, 

 but it cannot be confounded with that species by reason of its smaller 

 size and much darker colour ; from 0. hracJiyptera it is distinguished by 

 its shorter antennae and elytra, and less distinct punctuation, as well as 

 by its smaller size. 



THIASOPKIIiA, Kraatz. 



This genus contains about five or six species Avhich are found in 

 Europe, and one from Japan ; they occur in company with ants : our two 

 species have a somewhat wide distribution on the Continent ; they are 

 rather short broad insects of a dull reddish-pitchy colour, and have the 

 front parts very closely and rugosely punctured. 



Thorax at base not broader than elytra ; antennae moderately 



thickened T. angclata, Er. 



Thorax at base broader than elytra j antennae strongly 



thickened T. inquilina, Maerk. 



T. ang-ulata, Er. Rather broad, dull reddish-brown, with the head, 

 and hind body before apex, darker, apex itself reddish testaceous ; 

 antennai dark ferruginous with base and apical joint lighter, third joint 

 longer than second, 5-10 plainly transverse; thorax almost twice as 

 broad as long with a more or less distinct impression before scutellum, 

 thickly and some\\hat rugosely punctured ; elytra transverse, about as 

 long as thoraxj and a little more closely punctured ; hind body gradually 



