REVISION OF STREPSIPTERA PIERCE. 155 



mandibles, squarely and broadly truncate at apex; angles of head 

 immediately in front of spiracles, from which a long oblique line 

 extends to the anterior edge of the pro thorax, just behind the mouth; 

 mandibles triangular, with a sharp tooth at apex. 



2. CRAWFORD1A COCKERELLI, new species. 



Host. — Panurginus ornatipes Cresson (boylei Cockerell) ; Las Vegas, 

 New Mexico, August 3; W. Porter, collector (pi. 12, fig. 8). 



Female. — Length of cephalothorax 0.70 mm., breadth at spiracles 

 0.64 mm., breadth of head 0.608 mm., distance between mandibles 

 0.20 mm. Cephalothorax yellowish, with a dark brown basal band 

 extending over upon abdomen and forming a collar; longer than 

 broad, roundingly constructed at base, widest behind spiracles, 

 spiracles lateral but not prominent, margin slightly convex, oblique 

 to mandibles, squarely truncate at apex; mandibles large, blunt, 

 placed on lateral strip of head; spiracles not large, convex. 



Dedicated to Prof. T. D. A. Cockerell, of the University of Colo- 

 rado, who has done so much toward the advancement of our knowl- 

 edge of the Apoidea. 



Type.— Cat. No. 10113, U.S.N.M. 



Superfamily HALICTOPHAGOIDEA Pierce, 1908. 



This superfamily includes two families; the Halictophagidae and 

 the Dioxoceridse. 



6. Family HALICTOPHAGID^E Pierce, 1908. 



Strepsiptera or Stylopidse (part) Hoeven, 1850. 

 Hymenopterobise. (part) Saunders 1872. 

 Stylopides (part) Saunders, 1872. 

 Halictophagink Perkins, 1905. 



Type genus. — Halictophagus Dale (Curtis, 1832). 

 Parasites of Tetigonidse. 



Antennas seven-jointed, third to sixth produced laterally, seventh 

 elongate; tarsi three-jointed. 



This family includes five genera: 



24. Halictophagus Dale (1832); hosts unknown; Europe. 



25. Pentacladocera Pierce (1908), parasitic on Agallial; Aus- 

 tralia. 



26. Pentoxocera Pierce (1908), parasitic on Tetigonia, Hecalus, 

 Paradorydium; Australia. 



27. Agalliaphagus Pierce (1908), parasitic on Agallia; America. 



28. Megaleclvthrus Perkins (1905), parasitic on Platybrachys; Aus- 

 tralia. 



29. Neocholax Pierce, parasite on fulgorid; Java. 



30. Antliericomma Pierce (1908); hosts unknown; America. 



