338 PHYTOPHAGA. [Longitarsus. 
b+. Under-side ferruginous. 
at. Size larger; thorax sence 
punctured . . LL. FERRUGINEUS, Foudr. 
by. Size smaller ; ‘thorax very " finely 
“punctured yg . . . . LL. CERinus, Foudr. 
b. Antenne unicolorous testaceous - . . . L. FLAvicornNis, Steph. 
2. Punctuation fine.* 
A. Femora black or pitchy black, at least at apex. 
a. Length 23-3 mm.; elytra ovate, very 
finely punctured moteige Ne >. 2 1 exOmETUS, i: 
(femoralis, Marsh.) 
b. Length 1-1} mm.; elytra ovate, usually 
very dese puneeired ae L. PUSILLUS, Gyll. 
c. Length 2 mm. ; elytra oblong-ovate, finely, 
but rather distinctly, punctured. 
ae Colour darker ; head black or pitchy . lL. MEDIcaAGiNis, AJl. 
Colour very pale; head  reddish- 
Pie 56 - . . . L. ocHROLEvOUS, Marsh. 
B. Femora yellow or reddish-y ellow. 
a. Head, except forehead, and abdomen pitch- 
black; length 13-1$ mm. . L. Retcuet, All. 
b. Head and abdomen reddish or yellowish- -red. 
a®*, Length 3-33 mm. 
at. Hlytra yellow ; punctuation finer L. JAcoBHR, Wat. 
b+. Elytra red ; punctuation coarser L. RuTiLvs, Lil. 
b*. Length 2-23 mm. 
af. Elytra very light yellow, almost 
transparent; insect winged . . L. Gractuis, Kuts. 
b+. Elytra pale reddish-yellow ; insect 
sa 
. Head and thorax impunctate; 
™ shoulders of elytra rounded. L. tzvis, Duft. 
bt. Head and thorax finely but dis- 
tinctly punctured; shoulders of 
elytra prominent - os. « 2 © LPRLEUCIDUS) Loud. 
L. niger, Koch. Oblong-ovate, rather depressed, deep black ; 
antenne longer than half the body, thickened towards apex, black, 
with the basal joints yellow; thorax moderately convex, very finely 
punctured; scutellum almost round, smooth; wings ample; elytra 
widened behind, very closely and rather deeply punctured, acuminate at 
apex; legs yellow, with the posterior femora black; the species some- 
what resembles L. anchuse, but has the thorax more finely punctured, 
and broader at base, and the apex of the elytra differently shaped. L. 
2+ mm. 
“Ty his species is very rare, and appears to require some confirmation as 
British; Mr. Crotch first introduced it in the fir.t edition of his British 
catalogue, and records two old specimens in Mr. Wollaston’s collection ; 
there are also specimens standing under the name of Thyamis nigra 
in Dr. Power’s collection from Birdbrook (Essex), Horsell and Mickle- 
* In ZL. rutilus the punctuation is moderately strong, and in this respect it is inter- 
mediate between these two divisions. 
