28 MANDIBULATA. — COLEOPTERA. 



B. With the thorax tuberculated, or its anterior margin reflexed, elevated. 



a. Femora unarmed. 



Sp. 2. assimilis. Niger, supra ienu':, suhtus densiih, alhido-scjuamulo.ms, thorace 



depressiusculo canaliculato, bituberculato, rostro longissimo tenue. (Long. 



Corp. 1^ lin.) 

 Cu. assimilis. Payku!.—Ne. assimilis. Steph. Catal. 153. No. 1545. 

 Rather slender, black ; above sparingly, beneath densely, clothed with whitish 



scales ; thorax somewhat depressed, deeply impressed transversely in front, 



with a dorsal groove, deepest at the base and apex ; each side with an 



obtuse tubercle: elytra striated, the striae obsoletely rugose-punctate, the 



interstices coriaceous: rostrum long, slender, black. 

 Larger than the remaining species of this section, excepting the following, from 



which it differs in having the elytra more deeply striated, and the interstices 



coriaceous. 



Inhabits Scrophularia nodosa and other flowers, especially those of 

 the various species of Brassica : — not very uncommon near London. 

 " In the autumn on the sand-hills (near Swansea)." — L. W. Dill- 

 wyn^ Esq. 



Sp. 3. obstrictus. Niger, undiqve pilis hrevissimis cinereis tectus, pracipue 



subtus, thorace subtuberculato, elytris punctato-suJcatis. (Long. corp. 2 lin.) 

 Cu. obstrictus. Marsham. — Ne. obstrictus. Steph. Catal. 153. No. 1546. 



Black, slightly depressed; clothed throughout with very short cinereous hairs, 

 especially beneath : the thorax very shghtly bituberculated, the tubercles ob- 

 tuse : the elytra faintly punctate-striated, the interstices simple, pilose. 



Larger than the foregoing, of which it may be the opposite sex, but differs in 

 being clothed with scale-like hairs, especially beneath ; and in having the 

 elytra more faintly striated, and the interstices simple : the tubercles on the 

 side of the thorax more obtuse. 



Taken occasionally within the metropolitan district : in plenty at 

 Dover in June, 1829. " Occasionally taken on the sand-hills, and 

 has been found plentiful on Brassica Napis by Mr. Jeffreys."" — 

 Ij. W. Dillwyn, Esq. 



Sp. 4. Erysimi. Nigro-ceneus, subnitidus, elytris cceruleis, profunda punctato- 

 striatis, rostro pedibusque nigris, thorace canaliculato, bituberculato. (Long, 

 corp. \\—\\ lin.) 



Cu. Erysimi. Paykul.—Ne. Erysimi. Steph. Catal. 154. No. 1547. 



Black-brass, rather glossy ; thorax with a dorsal channel, and with a somewhat 

 acute tubercle on each side : elytra deeply punctate-stnate, the interstices 

 slightly punctured ; fine glossy blue or greenish : legs, antennte, and rostrum 

 black. 



