B88 CLAVicoRNiA. [_Heterocerus. 



finely punctured, of a reddish-brown colour^ with the suture and three 

 bands abbreviated externally, brownish or pitchy ; very often, however, 

 the elytra are fuscous red with the markings obsolete ; legs reddish- 

 yellow, posterior femora brownish at base. L. 2-2| mm. 

 Male with the mandibles elongate. 



Banks of brackish ditches ; very local and, as a rule, not common ; Gravesend ; 

 Sheerness ; Southend; Pegwell Bayj Hastings ; Cowes ; Southampton ; Lymiugton ; 

 Weymouth; Weston-super-Mare; Aberystwith ; Morecarabe Bay; Heysham, near 

 Manchester ; Northumberland district, very rare, Camboise (John Scott) ; Scotland, 

 very local, in salt marshes, Sohvay district, abundant in one spot near the mouth of 

 the Nith, Dumfries. 



The small size, narrow cylindrical shape, and reddish colour will at 



once distinguish this from all our other species. 



(Octhebius auriculatus, Key. This species, which has been 

 comparatively recently described by M. Rey, has been taken in numbers 

 by Mr. Champion and Mr. Walker in the Isle of Sheppey ; it is extremely 

 closely allied to 0. hicolon and 0. ruflmargi7iatus, especially the latter, 

 from which it chiefly difl;ers in being duller and less coarsely sculptured, 

 and appears to form a connecting link between them : I feel some doubt 

 as to its being really a distinct species. Vide Vol. I. p. 246.) 



Just as the last sheets of this Volume were returned for press, I 

 received from the Rev. A. Matthews a copy of a paper on " New Genera 

 and Species of Trichopterygidee " just published by him in the Annals 

 and Magazine of Natural History for March, 1889 ; as two new British 

 species are included in this paper, I am very glad to have the opportunity 

 of appending their descriptions : — 



Trichopteryx ang-usta, Matth. Elongate, very narrow, convex, 

 shining, black, sparingly clothed with fulvous hairs ; head large, eyes 

 moderate ; thorax small, broader than head, broadest at base, indistinctly 

 tuberculate, shining, with the basal margin almost straight, and the 

 posterior angles produced and very sharp ; elytra fuscescent, very short, 

 shorter and narroAver than the head and thorax, broadest at shoulders, 

 rather strongly asperate ; apex obtuse ; abdomen elongate, with five seg- 

 ments uncovered, black, obtuse at apex, entire ; legs clear yellow, antennae 

 obscurely yellow. L. f mm. 



Three specimens found by Mr. Matthews in Leicestershire, 



This species may be distinguished from others by its intermediate size, 

 long and narrow form, very short elytra, and long abdomen. 



Ptilium incogrnitum, Matth. Elongate-ovate, pitchy-black, very 

 convex, finely and closely tuberculate, sparingly clothed with short silvery 

 hairs, lines on thorax parallel ; head small, elongate in front, eyes not 

 prominent ; thorax moderate, very slightly broader than head, broadest 



