CORYLOPHID/E. 91 



in this interesting family. Thus, arranging them according to the 

 number of their antennal joints, we have Sadum ( Ch/f>easter 

 olim) and Microstagetus in which there are eleven articulations, 

 Arthrolips, Gloeosoma, and Sericoderus ( = Gri/phinus, Redt.) in which 

 there are ten, and Corylophus and Orthoperus (=Pithophilus, Heer, 

 and Microsphcera, Redt.) where there are only nine. 



Genus 80. SACIUM. 

 Leconte, Proc. ACM?. Nat. Sc. Philadelph. 129 (1852). 



262. Sacium pusillum. 



Cossyphus pusillus, GylL, Ins. Suec. ii. 576 (1810). 

 riypeaster pusillus, Germ., Fna Col. Eur. fasc. viii. 10 (1822). 

 ., Ins. Mad. 474, tab. x. f. 4 (1854). 



, Id., Cat, Mad. Col 140 (1857). 



Habitat Maderenses (Mad., Des.}, hinc inde in graminosis intermediis. 



A European insect which occurs in the Madeiran Group, principally 

 in grassy spots of intermediate altitudes. I have taken it in the 

 chestnut-woods in the north of Madeira proper, and more sparingly 

 on the Deserta Grande. 



Genus 81. ARTHROLIPS. 

 Wollaston, Ins. Mad. 475 (1854). 



263. Arthrolips ssqualis. 

 Arthrolips sequale, Wott., Cat. Mad. Col. 140 (1857). 



Habitat Madercnscs (Mad.), rarior, in subinferioribus prajsertini cul- 

 tis et graminosis. 



Detected by myself in grassy places, of but a slight elevation, in the 

 south of Madeira proper by brushing the coarse herbage near the 

 base of the Pico do Cardo, about three miles from Funchal ; and it 

 was subsequently found by the kte Mr. Bewicke*. 



264. Arthrolips obscurus. 



Clypeaster obscurus, Dej., Cat. 129 (1821). 

 Cossyphus obscurus, Sahib., Ins. Fetm. i. 474 (1834). 



* M. Duval's A. rufithorax, which he captured at Montpellier in the south 

 of France, is closely allied to my eequalis ; but it is a little smaller (being in fact 

 scarcely larger than the obscurus), more shining and convex, and relatively not 

 quite so broad ; and its scutellum is more triangular, or pointed at the apex. 

 But I have not examined its antennae, in order to ascertain if it possesses any 

 structural difference in the exact proportions of the joints. 



