March, 1911.] GiRAULT: Xew SpECIES OF PoLYNEMA. 17 



Abdomen smooth, dorsad the caudal margins of the segments straight, 

 segment 2 largest along the meson, twice the length of segment 3, segments 

 3 and 5 subequal, 3 widest, segments 4 and 6 subequal, slightly shorter; 7 dis- 

 tinctly longer, frustrum-like, segment 8 small, conic. Pronotum narrowed at 

 the meson and grooved there, the mesoscutum acutely produced at the meson. 

 Apical margin of the clypeus concave. 



Antennae inserted slightly above the middle of the face but not half-way 

 up the eye margins, yet distinctly dorsad of an imaginary line drawn between 

 the ventral ends of the eyes. They have the same general shape as in the 

 preceding species, the principal difference being in the shorter third funicle 

 joint which is not long and subequal to the second joint of the funicle but 

 only two thirds the latter's length ; the scape also differs in being dilated 

 ventrad and of shorter length, its dorsal margin flat or straight, slightly longer 

 than joint 2 of the funicle and distinctly longer than the pedicel and joint i 

 of the funicle combined ; pedicel subglobate, with a slight neck proximad, not 

 quite as wide as the greatest width of the scape but at least thrice wider than 

 the proximal funicle joint and a fourth longer; the funicle cylindrical, enlarg- 

 ing slightly distad, the six joints all longer than wide and unequal, joint i 

 cylindrical, slightly widened distad. shortest, slightly over a third of the length 

 of joint 2 ; joints 1-3 filiform, equal in width ; joint 2 longest, slender, subequal 

 to the scape and three fourths the length of the club joint ; joints 3-6 subequal 

 in length, after 3 gradually enlarging; of the four joints 3 and 6 are about 

 equal in length, slightly longer than either 4 or 5, joint 6 distinctly thicker 

 than the others but not abruptly so, ovate, distinctly less than half the length 

 of the large club joint and about a third of its width ; joints 4 and 5 distinctly 

 wider than joints 1-3. Club undivided, the largest antennal joint, ovate, equal 

 in length to the three distal (4, S, 6) funicle joints but not half as long by 

 far as the funicle taken as a whole ; with some longitudinal grooves or striae 

 near apex. Antennae more hairy than in the preceding species but not notice- 

 ably so, the clothing pilose and moderately loose, moderately close on the club. 



(From 10 specimens, two thirds inch objective, one inch optic, Bausch 

 and Lomb.) 



Male. — Length, i mm., more or less, slightly shorter than the female. 



The same, more graceful; two proximal joints of the antennal funicle with 

 some yellowish. (Lateral aspect), abdomen ovate, the body of it about equal to 

 the thorax in length, its petiole longer than the proximal funicle joint. 



Antennae somewhat similar to those of this sex in striaticorne but the 

 joints are relatively shorter, less distinctly striated longitudinally, though 

 traces of such sculpture are perceptible; the funicle joints are all cylindrical, 

 much longer than wide and subequal in length and sparsely hispid. Funicle 

 joints 4 to 10, inclusive, about equal, the distal or eleventh joint (club) about 

 a fourth shorter, the proximal three joints of the funicle slightly longer, a 

 third longer than the distal joints ; scape short, compressed, dilated ventrad, 

 distinctly longer than the pedicel and somewhat shorter than the proximal 



