322 PHYTOPHAGI. [Galeructe. 



1. Claws split or sharply toothed. 



A. Upper surface clothed with thick silky pubes- 

 cence GALKBUCBLLA, Crotch. 



(Qaleruca, nuct.) 



B. Upper surface glabrous or almost glabrous . . LOCHM.BA, Weise. 



2. Claws with a broad dilatation at base. 



A. Tibiae with strong apical spurs ; tarsi with 



first joint about as broad as third AGELASTICA, Redt. 



B. Tibiae with obsolete apical spurs ; tarsi with the 

 first and second joints distinctly narrower than 



third LTTPKRTTB, Oeoffroy. 



II. Anterior coxal cavities closed behind. 

 i. Ant. -Him- with the third joint not shorter than the 

 fourth ; last joint of maxillary palpi long, gradually 

 narrowed in front ; upper surface not metallic . . ADIMONIA, Laich. 



(Galeruca, Geoff.) 



ii. Antennaa with the third joint shorter than fourth ; 

 last joint of maxillary palpi short and conical; upper 



surface metallic SERMYLA, Chap. 



(Agelasa, Mots.) 



AGEXiASTXCA, Redtenbacher. 



Two species are recorded in the Munich catalogue as belonging to 

 this genus, one from Europe and the other from Japan, and three more 

 have since been added by Mr. Baly from Australia, Moreton Bay, and 

 Sanju ; the species is usually joined in our catalogues with Ssrmyla 

 (Ayelasa) halensis, but the fact that the latter genus has the anterior 

 coxal cavities closed behind, whereas in Agelastica they are open, will 

 at once separate them ; the single European species is extremely rare 

 in Britain, and has not, as far as I know, been met with for many 

 years ; it is the Adimonia alni of Stephens, and is figured by him in 

 the Illustrations. Mandibulata, vol. iv. p. xx. fig. 5. 



A. alni, L. Oval, rather convex, shining, of a deep violet or bluish- 

 violet colour, with the antennae, tibiae and tarsi black, the former with 

 the first two joints metallic ; head narrower than thorax, with a central 

 furrow, antennae rather stout, with the third joint plainly longer than 

 the second, but shorter than the fourth ; thorax somewhat convex, 

 broadest behind middle, somewhat narrowed in front, disc thickly 

 punctured, often impressed on each f-ide at or before middle ; scutellum 

 smooth, triangular ; elytra about as thickly punctured as thorax, but 

 with the punctuation stronger ; legs moderately long. L. 67 mm. 



Male with the fifth ventral segment of the abdomen slightly impressed 

 in a semicircle at apex. 



On alders; very rare; Stephens records it from near London, Exeter and Bristol, 

 and says, " I have formerly obtained several specimens from near Exeter, where they 

 were captured in June ; " there is no reason why it should be so rare in Britain, an it 

 is far from uncommon on the Continent. 



PKYIiZiOBROTXCA, Redtenbacher. (Auchenia, Marsham.) 

 This genus contains about a dozen species, three of which are found 





