34 A New Species of parasitic Hymenoptera from 



Juan Fernandez. 



By 

 CHARLES T. BRUES. 



In the material obtained by the Swedish Expedition under C. Skottsberg 

 is a single male of the Bethylid genus Cephalonomia which proves to represent 

 an undescribed species. 



Cephalonomia skottsbergi sp. nov. 



J*. Length i,i mm. Rufous or piceous, the head somewhat darker than 

 the thorax which has a somewhat rufous tinge; abdomen tinged with brown; 

 antennae fuscous, the scape and pedicel, especially the tip of the latter, lighter; 

 legs pale fuscous, the trochanters and tarsi much lighter. Head slightly less 

 than twice as long as wide, the ocelli in a small equilateral triangle; eyes one- 

 fourth as long as the head, oval, their upper margins slightly behind the middle 

 of the head. Antennae i2-jointed; scape scarcely thickened, twice as long as 

 wide; pedicel as stout as the scape, but only one and one-half times as long 

 as thick; first three flagellar joints moniliform, small, gradually increasing in 

 size; fourth quadrate, fifth slightly wider than long; sixth to ninth growing 

 longer, one-third to one-half longer than wide, tenth, or last, lengthened, one- 

 third longer than the penultimate, tip of antenna reaching to the base of the 

 scutellum. Prothorax as long as broad, very much narrowed anteriorly, its 

 surface shining, the lateral margins arcuately excavated. Mesonotum shining, 

 shagreened, without trace of parapsidal furrows, one-third shorter than the 

 pronotum and twice as wide as long. Scutellum with an impressed line across 

 the base. Propodeum closely minutely punctulate, the sides parallel anteriorly; 

 sharply narrowed behind to the insertion of the abdomen; not carinate above; 

 upper surface highly convex just before the posterior declivity which is gently 

 sloping and very faintly sculptured; propodeum as long as the mesonotum and 

 scutellums together. Abdomen smooth and shining; second segment the long- 

 est, as long as wide, equalling the length of the following segments taken 

 together; its basal margin deeply, semicircularly excavated; posterior margin 

 straight. Femora moderately thickened; tibiae simple, not spinose, except 



