CHRYSOMELID^. 171 



G. aridida, Gyll., and the latter insect must apparently be erased from 

 our lists ; it is a longer insect with the basal joint of the antennae 

 darker, and more like C. confiisa in shape. 



Mr. Donisthoi'pe's specimens of C. arida are smaller and narrower 

 than C. hortensis, and have the shoulders more sloping. 



DIBOLIA, Latreille. 



Dibolia, Latr. (Cuv. Regn. anim. (2 ed. v.) 1829, p. 155). Ovate 

 and convex ; antennte short, with the basal joint robust ; head small, 

 flat in front, concealed beneath the anterior margin of the thorax, which 

 is short and transverse ; elytra broad and rather long ; legs with the 

 posterior tibise thickened towards apex, and armed at the apex with a 

 bifid spur, which, with the concealed head, will easily distinguish the 

 genus from its allies. 



D. cynoglossi, Koch. (Ent. Hefte. ii. p. 20, t. 2, fig. 2). Oblong- 

 ovate, convex, nigro-?eneous, with a greenish reflection ; antennae fuscous, 

 with the first five or six joints red ; thorax comparatively small, 

 transverse, narrowed gradually in front, finely and not very closely 

 punctured ; elytra with the shoulders rounded, thickly punctured, with 

 the punctures fine and arranged in more or less regular rows, which are 

 feebler towards apex, interstices very finely sculptured, under a high 

 power sub-alutaceous ; legs i^ed or reddish-testaceous, with the femora 

 and tarsal claws more or less dark, posterior tibiae somewhat pitchy 

 towards apex, spinulose exteriorly. L. 3 mm. 



One specimen was recorded by Stephens (111. Mand. iv. 325) as 

 from the neighbourhood of Bristol, but the species has long been 

 omitted from our lists, and is practically a new British record. Several 

 specimens were captured by Mr. Donistiiorpe at Pevensey in 1902 (Ent. 

 Record 1902, p. 3G5), and he found it in abundance in 1905, when he 

 discovered the food-plant — Galeopsis ladaniun, var. canescens, Scliultz, a 

 variety of the common red "Hemp Nettle" (Ent. Mo. Mag. 1905, 

 p. 25G). D. cynoglossi occurs in Central Europe and Spain and is very 

 rare in France. 



A single specimen of D. occidtans, Koch., was also recorded by 

 Stephens {I.e. p. 325) from the neighbourhood of London ; it is the 

 only species that occurs in Norway and Sweden (Thorns. Skand. Col. 

 viii. 211) and may very likely be found in Britain; it difl;ers from 

 D. cynoglossi in being blacker with a bluish rather than a greenish 

 reflection, with the thorax and elytra more thickly punctured, and in 

 having black legs, with pitchy tarsi ; the antennae also are darker, with 

 the base ferruginous. 



CRYPTOSTOMATA. 



CASSIDA, Linne. 

 C. murraea, L., var. maculata, L. (Syst. Nat. xii. 575). This 

 is the ordinary green variety of the species, which is apparently as 

 common as the type form. 



