BY ARTHUR M. LEA. 455 



co-types) of a number of the species described by Mr. Pascoe, 

 besides a large number of new forms. 



Genus Poropterus, Schonherr. 



Schonh., Gen. et Spec. Cure. Vol. viii. Pt. 1, p. 431, Genus No. 

 547; Waterhouse, Trans. Ent. Soc. Lond. ii. (2), 1853, p. 195; 

 Pascoe, Journ. Linn. Soc. xi. 1870, p. 189; Lacord., Gen. des Col. 

 vii. p. 91. 



Head flat, never more than slightly convex. Ocular fovea 

 small or almost obsolete, often entirely concealed by scales. Eyes 

 moderately or somewhat coarsely granulate, rounded, widely 

 separated, an obsolete line beneath them. Rostrum never more 

 than moderately curved, occasionally almost straight, broad, 

 flattened, more or less scaly, muzzle widening to apex; usually 

 broader, shorter and more curved in ^. Antennce, slender. Scajje 

 sometimes inserted in the exact middle of rostrum, but usually 

 much closer to apex, usually passing muzzle for a considerable 

 distance, but sexually variable, often without scales or setae. 

 Funicle with two basal joints more or less elongate. Cluh either 

 short, subcircular, or moderately elongate, adnate to funicle or 

 not, joints indistinct or invisible. Prothorax either as wide as 

 long, or a little longer than wide; apex usually much narrower 

 than base, sometimes rounded or truncate, often bluntly bifurcate; 

 sides more or less rounded and precipitous ; base either very 

 feebly bisinuate or truncate, occasionally with a small scutellar 

 lobe; ocular lobes somewhat prominent; ciliation minute, rarely 

 entirely absent, seldom visible unless head be removed; usually 

 with a narrower, more or less shining, abbreviated carina along 

 the median line, a depression on each side of it, occasionally 

 with a depression in place of the carina, sometimes without either; 

 often with a single or two transverse series of four tubercles which 

 are occasionally united in the middle and subjoined at the sides, 

 .seldom entirely absent ; frequently with small granules ; rarely 

 visil)ly punctate. ric^Uellnin small or alisent. Ehjtra from once 

 and one-half to more than twice the length of prothorax, widest 

 iibout the middle, but occasionally nearer the base, sometimes 



