124 bulletin: museum of comparative zoology. 



submedian, and radial veins indicated strongly as dark streaks; 

 cubital and discoidal ones indistinctly so in the same way. 



This is a large, beautiful species and should be easily recognized. 

 Although I have not been able to compare it with the type-species of 

 Cacellus it agrees perfectly with the original description of the genus 

 and is congeneric with American species which I refer to Cacellus. 



Bethylidae. 

 Apenesia malaitensis, sp. nov. 



Type.— M. C. Z. 9,071. Solomons : Malaita, Auki. W. M. Mann. 



9 . Length 4.8 mm. Head, thorax, antennae, and legs pale yel- 

 lowish brown; abdomen piceous with the apical margins of the basal 

 segments and the sixth and seventh segments entirely fuscous or 

 honey-yellow. Head to apex of clypeus about one fourth longer than 

 wide, slightly narrowed above, with the upper angles obliquely 

 rounded; occipital margin concave; eyes minute, oval, smaller than 

 the pedicel of the antennae, inserted very close to the mandibles; 

 clypeus sharply elevated medially; mandibles bidentate, apical tooth 

 much larger than the inner one. Front and back of head with faint 

 traces of longitudinal aciculations and with a few large scattered punc- 

 tures. Antennae 13-jointed, barely reaching the vertex; scape thick, 

 obclavate, over half as long as the remainder of the antennae; pedi- 

 cel globose, as long as the first flagellar joint, second and third flagellar 

 joints each about as long as the first, and somewhat broader; following 

 much broader, transverse; last joint twice as long as the preceding, 

 broadly rounded at tip. Pronotum one half longer than wide, sculp- 

 tured like the head, rounded in front, truncate behind; neck visible 

 from above, one third as long as the pronotum, rounded in front; 

 pleurae visible from above, appearing one fourth as wide as the pro- 

 notum. Middle lobe of mesonotum subtriangular, nearly as long as 

 wide and rounded behind; lateral lobes about twice as long as the 

 median one, the whole mesonotum one half wider than the pronotum, 

 its surface smooth. Propodeum constricted just beyond basal third, 

 a little wider behind than in front; anterior margin concave; apex 

 evenly rounded; upper surface indistinctly longitudinally aciculate, 

 with a few scattered large punctures. Abdomen smooth, as long as 

 the head and thorax together; sparsely clothed with long hairs on the 

 sides, more conspicuously so toward the apex; second segment the 



