Oct., '04] ENTOMOLOGICAL NEWS. 261 



EXPLANATION OF PLATE XVII. 

 Fig. I. — Xysticus modesius, dorsal view of female. 

 " 2. — Phidippus ferrugineiis, dorsal view of female. 

 " 3. — " " side view. 



" 4. — Araneus singcefonnis, dorsal view of female. 

 *' 5. — " " ventral view. 



" 6. — " *' epigdnum. 



" 7. — Lycosa wacondana, dorsal view of female. 



The American Genera of the Bee Family Dufoureidae. 



By Henry L. Viereck. 

 As defined by Robertson, Can. Ent. xxxvi., p. 37, this family 

 constitutes a compact group of genera in the old Panurgidse. 



Labial palpi with the first joint distinctly longer than the next three, second 

 joint at least one-third as long as the first joint ; posterior 

 femora in the male laminate ; abdomen not toothed. 



Neohalictoides n. g., type N. (H.) maarns Cress. 

 Labial palpi with the first joint distinctly shorter than the other three, 

 second joint about three-fourths the length of the first joint. 



Legs ordinary Epihalictoides Ckll. 



Legs elaborately produced into spines and angles. 



Gryptohalictoides n. g., type C. spiniferns n. sp. 



Labial palpi with the first joint rather shorter than the next three joints 



together, the second joint about one-half the length of the first 



joint Parahalictoides Ckll. 



Labial palpi with the first joint about one mm. shorter than the next three 

 joints together, the second joint about two-thirds the length 

 of the first joint or a little shorter ; head narrow, distinctly 

 longer than broad ; male with a pointed tubercle on the poste- 

 rior trochanters . . Gonohalictoides n. g., type C. lovelli Vier. 



Gryptohalictoides spiniferns n. g. n. sp. 



(^. II mm. long. Head. — Front closely and finely punctured, frontal 

 impression represented by a faint impressed line, above the insertion of 

 each antenna is an oval impression ; vertex with the punctures larger 

 than on the front and scattered, closest back of the ocelli ; cheeks if any- 

 thing a little broader than the eye, punctured like the front ; distance 

 between posterior ocelli a little less than the distance between the lateral 

 ocellus and the nearest eye margin ; clypeus closely punctured nearly 

 hidden by the hairs hanging over it, apparently smaller than the labrum ; 

 labrum convex, smooth, somewhat longitudinally striated, punctured on 

 the lower margin ; mandibles with a short blunt tooth not far from the 

 apex ; scape about as long as the second joint of the flagellum. pedicel- 

 lum distinctly shorter than joint one of the flagellum, the pedicellum and 

 the first joint of the flagellum together shorter than the second joint of the 



