82 MANDIBULATA. COLEOPTERA. 



Sp. 1. prasinus. Nigro-cyaneus, capite thoraceque virescentihus, pedihus ely- 

 trisque rtifescentibus , elytris postice maculd commnni nigro-cyaned. (Long. 

 Corp. 3— Si lin.) 



Ca. prasinus. Fahricius. — Martyn, pi. 37, f. 25. — An. prasinus. Steph. Catal. 

 No. 114. 



Head and thorax greenish ; elytra depressed^ pale ferruginous^ with a large 

 dorsal blue-black spot behind^ reaching nearly to the apex^ striated^ the strise 

 impunctate, the interstices flat;, smooth ; body beneath glossy-black : legs, 

 palpij and antennae pale rufous, the terminal joints of the latter dusky. 



A veiy abundant species, particularly near London ; and Dr. 

 Leach took it plentifully in Scotland. Like the Brachini, this 

 species wards off the attacks of its enemies by repeated discharges 

 of smoke and noise. 



Sp. 2. albipes. JVigro-piceus, antennis, pedibus, elytrorumque viargine pallidis. 



(Long. corp. 3 — 3J lin.) 

 Ca, albipes. Illiger. — An. albipes. Steph. Catal. No. 115. 



Pitchy-black, slightly shining : head smooth : thorax a little convex, smooth, 

 with a shght central channel, or transverse impression, near the base, which 

 is thickly punctate : elytra striated, the strise impunctate, with a series of 

 remote impressions near the margin of the elytra; the margin itself, and legs, 

 pale testaceous : body beneath pitchy black, pallid at the apex : palpi pale 

 ochraceous ; antennae pale at the base, ferruginous at the tip. 



Var. ^. Pale ferruginous, eyes black, legs pale testaceous. 



Extremely common in damp banks throughout the metropolitan 

 district. 



Sp. 3. sordidus. Niger, elytris obscure piceis striatis, striis immunibus j ely- 



troruvi marginibus pedibusque testaceis. (Long. corp. 3^^ lin.) 

 Ca. sordidus. Marsham.^An. sordidus. Steph. Catal. No. 116. 



Head pitchy-black : thorax black, glabrous, with an impressed, abbreviated, 

 obsolete, longitudinal, central hne ; the base ruggedly-punctate : elytra ob- 

 scure, piceous, striated, the striae impunctate ; the margin testaceous : body 

 beneath black : palpi, antennae, and legs, testaceous. 



Var. /3. With the elytra reddish-testaceous. 



I obtained a pair of this species from the collection of Mr. Mar- 

 sham, captured near Usk, in Cumberland ; but I do not think them 

 sufficiently distinct from the preceding. The colour of the palpi 

 and antennse is rather darker, and the insect appears rather more 

 slender. 



Sp. 4. oblongus. Apterus, piceus, nitidus, elytris crenato-striat is , fusco-testaceis , 



antennis pedibusque pallidis. (Long. corp. 2— 21 lin.) 

 Ca. oblongus. Fahricius.— An. oblongus. Steph. Catal. No. 117. 

 Glossy black : head smooth, large : thorax elongate^ scarcely broader than the 



