Tracttys.'] SERRIOORNIA. 73 



Chatham, Darenth Wood, Coorobe Wood, Cliattonden ; Hastings; Portsmouth dis- 

 tri.-t ; Dorset; Lords Wood, Suiitliamptou ; Huntingdonshire; Wood Ditton, Cam- 

 bridge ; Lungworth Wood, Lincoln. 



T. pumila, 111. (intermedia, Lap.). Allied to the preceding, but at 

 once distinguished by its smaller size, and shorter, more ovate, and more 

 convex form, as well as by its more shining appearance, more even 

 surface, and the very strong and much more distinct and regular punc- 

 tuation of the elytra ; the shoulders of the latter are not so much marked 

 and the sides are more rounded near base, and the pubescence is uneven, 

 and often obsolete, and when present does not take the form of waved 

 bands; the size is very variable. L. lj-2f mm. 



By sweeping herbage ; occasionally at the roots of plants (Marrubium vulgare, &<.) 

 nn<l in moss on chalky hill-sides; extremely local; Mickleham, Surrey, where it has 

 been fonnd in numbers by Dr. Power, and subsequently has been taken by Mr. 

 Champion ; Southwick, near Southsea (Moncreaff) ; I know of no other British 

 locality for this insect; it used to be erroneously inserted in our catal* gues as 21 

 nana, F., which is a different species that has not hitherto occurred in Britain. 



T. troglodytes, Gyll., nee Lap. (pygmcea, "W. C., nee F.). Of 

 much the same shape as the preceding, but easily distinguished by its 

 colour ; head and thorax of a dark shinirig coppery colour, the former 

 deeply excavate and channelled, the latter even, except for slight 

 depressions at sides, finely and sparingly punctured, and occasionally 

 impunctate ; elytra without pubescence, of a dark blue colour, convex, 

 rather strongly but not deeply punctured in rows, and in part trans- 

 versely rugose ; under-side brownish-bronze ; legs dark, more or less 

 metallic. L. 2| mm. 



By sweeping herbage, flowers, &c. ; occasionally in moss ; very widely distributed, 

 but always rare ; Coornbe Wood (Stephens) ; Chatham (J. J. Walker) ; Folkestone 

 (Waterhouse) ; Guestling, near Hastings (Butler) ; New Forest ; Glanvilles Wootton 

 (Dale and Wollaston) ; Holm Bush, Brighton (Power) ; Weston ; Barmouth (Chap- 

 pell) ; Cambridge (Stephens); St. Faith's, Norwich (Power); Hornsea; Knowle, 

 uear Birmingham (Blatch) ; Scotland, very rare, Solway district (Sharp). 



THROSCIDJE. 



This family has been by several authors classed with the Eucnemidae, 

 but appears to be distinct by reason of the formation of the anterior 

 coxal cavities, which are formed by the pro- and mesosternum, whereas 

 these parts in the Eucnemidse and the Elateridse are entirely prosternal ; 

 this character is also found in the Scaphidiidic, and lias been before 

 alluded to as being to a certain extent present in Ephistemus (Vol. III. 

 p. 7); from the Elateridse the family is distinguished by the fact that 

 the thorax is more closely applied to the body, and that the species 

 have not the power of leaping if placed on their back. The following 

 are some of the chief characters : Head sunk in thorax as far as eyes, 



