142 MADETRAN COLEOPTERA. 
423. Arthrolips piceum. 
Clypeaster piceus (Kunze), Comolli, De Col. Nov. 50 (1837). 
obscurus, Dey. Cat. (Sime édit.) 455 (1837). 
Gryphinus piceus, Redt., Fna Austr. 574 (1849). 
Arthrolips piceum, Woll., Ins. Mad. 476. tab. x. f. 6 (1854). 
Inhabits Madeira and the Dezerta Grande, being apparently some- 
what rare in the former, but common in the latter. 

Genus 171. SERICODERUS. 
Stephens, Ill. Brit. Ent. ii, 188 (1828). 
424, Sericoderus lateralis. 
Cossyphus lateralis (Meg.), Gyll., Ins. Suec. iv. 516 (1827). 
Sericoderus thoracicus, Steph., Ill. Brit. Ent. ii. 188 (1828). 
Clypeaster lividus, Dej. Cat. (Sime édit.) 455 (1837). 
Gryphinus lateralis, Redt., Fna Austr. 573 (1849). 
Sericoderus lateralis, Woll., Ins. Mad. 478 (1854). 
Inhabits Madeira and the Dezerta Grande; abounding in the 
former (in damp shady spots) at nearly all elevations, but being 
apparently scarce upon the latter,—where I detected a single speci- 
men during June 1855. 
Genus 172. CORYLOPHUS. 
(Leach) Steph., Man. Brit. Col. 99 (1839). 
425. Corylophus tectiformis. 
Corylophus tectiformis, Woll., Ins. Mad. 480, tab. x. f.9 (1854). 
Inhabits Madeira proper, occurring in the moist sylvan districts of 
jntermediate and lofty elevations. 
Genus 173. GLQ@OSOMA. 
Wollaston, Ins. Mad. 480. tab. x. f.7 (1854). 
426. Gloeosoma velox. 
Gloeosoma velox, Woll., Ins. Mad. 482. tab. x. f.7 (1854). 
Inhabits Madeira proper, and is hitherto unique,—the single spe- 
cimen having been captured by myself at the Praya Formoza, near 
Funchal, on the 8th of May 1848. 
Genus 174. ORTHOPERUS. (Vide Plate, fig. 3.) 
Stephens, I. Brit. Ent. ii. 186 (1829). 
Corpus minutissimum, rotundato-ovatum, glabrum, convexum : oculis 
