180G.J 125 
The following somewhat vague description of L. ohlonga, Mots. 
(Bull, de Mosc, 1857, 493), shows that L. Sharpi can have no con- 
nection with that species. " Size of L. bicolor, but narrower, whicli 
" makes it (and especially its head and thorax) appear more elongate. 
" Colour generally clearer and more reddish. Antenna} half-again as 
" long as the head and thorax ; the latter of which is as long as wide, and 
" rather cordate, with the posterior angles acute. Elytra more than 
" double as long as the thorax, and more finely punctured. ScuteUum 
" visibly punctured." 
Since the above description was in print, I have received from Mr. 
Crotch a copy of the second edition of his Catalogue, wberein he places 
next to L. bicolor a species under the name collina, Hal, which, from 
the synonymical reference to muscoriom, Sh. (probably in error for 
monticola, Sharp), I presume is intended to represent the insect last 
described by me. I do not, liowever, withdraw my description ; as the 
only reference to L. collina (and which is not accompanied by any descrip- 
tion) appears to be in the Nat. Hist. Eeview ; where, in a report of the 
Proceedings at a meeting of the Dublin Nat. Hist. Society, it is said 
that Mr. Haliday exhibited specimens of a Lesteva from the hills allied 
to bicolor, but with shorter elytra, and thought they were varieties of 
that species, but that they might be distinguished by the name o{colU?ia. 
As L. bicolor actually does vary somewhat in the length of its 
elytra, and the character of their shortness (the only one given) would 
equally apply to L. jnibescens, I consider it impossible to adopt Mr. 
Haliday's name for this insect. 
284, King's Road, Chelsea, S.W., October, 1866. 
AN ESSAY TOWARDS A KNOWLEDGE OF BRITISH IIOMOPTERA. 
BY THE EEV. T. A. MARSHALL, M.A. 
(^Continued from page 104.^ 
29. — IaSSUS (I.) SEXNOTATUS, Fall. 
Pra5cedenti similis, minor. Flavus ; abdomen nigrum, segmentis 
flavo-marginatis, subtus interdum flavum. Vertex minus porrectus 
quam apud pra)cedentem, nigro quadri-maculatus ; maculae 2 majores, 
rotundas, in ipso apice approximatse, 2 minores, distantiores, ad marginem 
pronoti posticum sitte. Inter hsec macularum paria linea utrinque 
brevis, transversa, ad oculos excurrit. Frons plus minus nigro can- 
cellata ; limbus etiam genarum clypeique tenuiter niger. Pronotum 
