Longitaretu.'] PHYTOPHAOA. 337 



punctured, less narrow in proportion to 

 elytra. 



a. Thorax with a metallic reflection . . . L. ATRICILLC8, L. 



b. Thorax without metallic reflection. 

 *. Elytra oval, broader. 



af- Punctuation of thorax and elytra 

 stronger ; shoulders of elytra less 



distinct L. PATRUBLIS, All. 



bf . Punctuation of thorax and elytra 

 finer ; shoulders of elytra more dis- 

 tinct L. XELANOCKPHALU8, D0 0. 



b*. Elytra oblong oval, narrower. 



at- Head black ; elytra confusedly 

 punctured, the punctures being oc- 

 casionally arranged in very indis- 

 tinct rows near base L. ATBICEPS, Kuti. 



b-f-. Head reddish- testaceous. 



aj. Size larger; elytra punrtnred 



in distinct rows towards base . L. DISTIN QUEXDUS, Rye. 

 bj. Sire smaller ; elytra confusedly 



punctured L. ABDOUINALIS, Duft. 



2. Elytra with the shoulders not obliquely rounded. 



A. Thorax black or pitchy. 



a. Elytra distinctly punctured, with tli2 suture 



only dark L. SUTUBALIS, Marsh. 



b. Elytra more finely punctured, with the 



suture and all the margins dark . . . . L. NASTURTII, F. 



B. Thorax reddish-testaceous. 



a. Size larger ; elytra broader in proportion to 



thorax, very finely punctured L. PICICKP8, Steph. 



(atricapillut, Bedt.) 



b. Size much smaller ; elytra narrower in pro- 

 portion to thorax, rather distinctly punc- 

 tured L. LTCOPI, Foudr. 



V. Elytra unicolorous testaceous or reddish-testaceous 



without darker suture.* 



i. Antennae widely distant at base ; posterior tibiae 

 armed with a strong curved spur at apex ; size 



larger L. TABIDUS, F. 



(rerbasci, Punz ) 



ii. Antennae more approximate at base ; posterior 

 tibiae armed with a short or moderate spur at 

 apex ; size smaller. 

 1. Punctuation strong. 



A. Elytra dehiscent at apex ; Lead and under- 

 side reddish L. MKMBRANACECS, Foudr. 



(teucrii, All.) 



B. Elytra not dehUcent at apex. 



a. Antennas darker towards apex. 



t*. Head black or pitchy black . . . . L. BALLOTf, Marth. 

 b*. Head red or reddish-testaceous. 



af. Under-side black with the last seg- 

 ment ferruginous L. WATKRHOUSEI, Kutt. 



(pratentis, Panz. ?) 



* In the rar. thapti-of L. tabidus and the var. 1'ou-eri of L. gracilii the suture is 

 infuscate ; in L. exvlttut it is sometimes ferruginous, 



VOL. IV. Z 



