Entomological Society. 



8015 



with fine ashy pubescence. In certain lights the elytra exhibit an indistinct faint 

 brownish tint, and the apex of the abdomen is more distinctly tinted with brown. The 

 thorax has a pretty distinct transverse fovea behind, and running forwards from this is 

 a faint dorsal channel, which, however, disappears near the front of the thorax. The 

 basal joint of the posterior tarsi (which are but of moderate length) is equal in length 

 to the two following joints, taken together ; and joints two, three and four are very 

 nearly equal to each other. I have taken this insect in the Hammersmith Marshes. 



" 2. Oxypoda misella belongs to the little section of the genus, the species of which 

 have the elytra shorter than the thorax. Of this section but two British species have 

 hitherto come under my notice, viz., O. annularis of Mannerheim and O. brachyptera 

 of Kirby — 0. ferruginea of Erichson. The species regarded as O. misella now 

 exhibited was taken near Wickham, by Mr. Rye, and was at once separated by him 

 from the other two species above named, in company with which it was found, through 

 its dark colouring combined with its comparatively short antennae. In the structure 

 of the antennas it most nearly resembles O. annularis, the terminal joint being short 

 (very little longer than broad), as in that insect, and the intermediate joints being 

 strongly transverse; but these organs are rather less stout in O. misella than in O. 

 annularis, and are of a dark pitch colour, excepting at the base. The insect, moreover, 

 is rather smaller, and r>s general colour is pitchy ; the thorax and elytra, apex of the 

 abdomen and the edges of the abdominal segments more or less rufous-piceous ; the 

 legs and base of the antennas testaceous. O. annularis is entirely rufous-testaceous, 

 with the exception of the head and middle of the abdomen, which are somewhat dusky. 

 O. brachyptera is usually intermediate in its colouring between the above-mentioned 

 two species; its antennae, thorax, elytra, and the base and apex of the abdomen, are 

 ferruginous. Here the antennae, if bent backwards, would nearly extend to-the apex 

 of the elytra (the same organs would fall considerably short of the same point in the 

 other two species) ; the intermediate joints are moderately transverse, and the terminal 

 joint is fully twice as long as broad. The elytra are rather longer, and the punctuation 

 is more distinct and somewhat rugulose, which is not the case in O. misella and O. 

 annularis. 



" 3. Of the specimens of Trechus oblusus which are exhibited, one is from the 

 Continent, having been kindly sent to me by Dr. Schaum; the second is British, and 

 stood in my collection for many years under the MS. name ' laevis,' it having been so 

 named by me and separated from the T. minutus, chiefly in consequence of the almost 

 total obliteration of the striae of the elytra. In the fifth volume of Stephens' ' Illustra- 

 tions' (Mandibulata), and in the 'Manual' by the same author, an insect is very 

 briefly described under the name ' T. laevis, Waterh.' ; whether the description was 

 taken from this specimen I am not aware, but as there is no insect in Stephens' col- 

 lection to represent the species, the exhibited specimen is probably the original of the 

 description. However this may be, it will be seen by the members present that the 

 British specimen agrees perfectly with the continental one, and differs from T. minutus 

 chiefly in having the elytra shorter, more convex and of an ovate form, the broadest 

 part being in the middle, whilst in T. minutus the elytra are broadest behind the 

 middle, and the striae of the elytra being all obliterated, or very nearly so, excepting 

 the three nearest the suture. In T. minutus there are at least four distinct striae on 

 each elytron. The last-named insect, moreover, is provided with perfect wings, whilst 

 in T. obtusus the wings are rudimentary. 



"4. For Bembidium Mannerheimii, recently detected by Mr. Rye amongst 



