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1872.1 203 
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_ DESCRIPTION or a NEW SPECIES or ANISOTOMA rrom GREAT BRITAIN. 
BY E. C. RYE. 
ANISOTOMA LUNICOLLIS, sp. 7. 
Ovato-oblonga, convexa, nitida, ferruginea, antennarum clava graci- 
licre, fuscescente, articulo apicali quam penultimo angustiore ; prothorace 
elytris paulo latiore, lateribus (ac precipue apicem versus) valde rotun- 
datis, apice emarginato, basi truncato, supra subtilius erebre punctulato ; 
elytris punctato-striatis, punctis crebris minoribus, interstitiis leviter 
elavatis sat crebre subtiliterque punctulatis; pedibus intermedits posti- 
 eisque crassiusculis, breviusculis, tibiis anticis linearibus. 
Long. corp. 1% lin. (Anglie.). 
Maris tibie intermedie ad apicem dilatate leviterque incurvate, 
tarsis crassiusculis ; femora postica compresso-dilatata, subtus ante apicem 
denticulatum sinuata, tibiis haud elongatis, paulo incurvatis, leviter sub 
apicem incrassatis. 
Intermediate between A. calcarata and A. hybrida; differing from 
the former (of which it equals average examples in size) as follows: 
its thorax is wider, with the sides so rounded that the usual anterior 
angles are entirely—and the posterior angles almost entirely—obliter- 
ated; and with the base truncate, there being but the faintest possible 
indication of the sinuations before the posterior angles: its antenne 
have a smaller club: its build is rather more oblong, the contraction of 
the sides of its elytra towards the apex not commencing so near the 
- shoulder: the punctures of the strie of its elytra are more closely 
packed and not so large, those of the interstices (which are not quite 
so flat) being rather more evident and decidedly more numerous: and 
the hind legs of its male are scarcely perceptibly elongated, the femora 
having only a minute denticle at the apex beneath. 
From 4. hybrida it differs in its somewhat less oblong build, its 
wider thorax, which is less closely punctured and has no vestige of 
anterior angles, the slightly stronger punctuation of the striz of its 
elytra, which exhibit no trace of transverse sub-strigosity, and the 
denticulated femora of its male (cf Kraatz, Stettin. Ent. Zeit., 1852, 
* 300, for @characters of dA. hybrida, unknown to Erichson). 
The points of structure indicated above seem to render comparison 
with any other recorded European species unnecessary. 
Of this interesting insect, five examples (all ¢) were taken by 
the indefatigable and successful Mr. R. Lawson, in flood-refuse near 
Scarborough ; and I am indebted to that gentleman for two of these 
