1912.] NATURAL SCIENCES OF PHILADELPHIA. 209 



California, and northward to northern Nebraska and extreme north- 

 eastern Colorado. 



Key to Cycloptilum Scudder. 



A. Size small; pronotum of male with cephalic portion of dorsum 

 well rounded, caudal portion broadened and distinctly flat- 

 tened; the lateral outline of the pronotum when seen from 

 above expanding more sharply caudad; pronotum of female 

 small; ovipositor 3 mm. or over squamosum Scudder. 



AA. Size very small; pronotum of male with entire dorsum trans- 

 versely well rounded, caudal portion not so much broadened; 

 the lateral outline of the pronotum when seen from above 

 expanding regularly but very slightly; pronotum of female 

 very small; ovipositor less than 3 mm., 



zebra (Rehn and Hebard.) 



Cycloptilum squamosum Scudder. 



1868. Cycloptilum squamosum Scudder, Proc. Bost. Soc. Xat. Hist., XII, 

 p. 142. [Texas.] 



1874. Cycloptilum squamosum Saussure, Miss. Sci. Mex., Rech. Zool., VI, 

 p. 427. [Texas.] 



1877. Cycloptilus squam/jsus Saussure, Melang. Orth., II, p. 477. [Texas.] 



1891. Cycloptilus borealis Brunei - , Can. Ent., XXIII, p. 37. [Xear Xiobrara 

 River at Valentine and Lincoln, Xebraska.] 



1893. Cycloptilum boreale Brunei - , Publ. Xebr. Acad. Sci., Ill, p. 33. [Cen- 

 tral and Xorthern Xebraska.] 



1897. Cycloptilus squamosus Saussure, Biol. Cent. Amer., Orth., I, p. 231. 

 [Dallas, Texas.] 



1903. Cycloptilus squamosus Caudell, Proc. U. S. Xat. Mus., XXVI, p. SOS. 

 [Victoria, Texas.] 



1905. Cycloptilum squamosum? Rehn and Hebard, Proc. Acad. Xat. Sci. 

 Phila., 1904, p. 799. [Thomasville, Georgia.] 



1907. Liphoplus krugii Rehn and Hebard, ibid., 1907, p. 361 (in part). 

 [San Pablo and Gainesville, Fla.] 



1909. Ectatoderus occidentalis ? Rehn and Hebard, ibid., 1909, p. 482. [Cot- 

 tonwood, California.] 



1909. Cycloptilum squamosum Davis, Jour. X. Y. Ent. Soc, XVII, p. 187. 

 [Lakehurst, Xew Jersey.] 



1910. Cycloptilus squamosus Allard, Proc. Ent. Soc. Wash., XII, p. 42. 

 [Thompson's Mills, Georgia.] 



1910. Cycloptilus squamosus Rehn in Smith, Ann. Rept. Xew Jersev State 

 Mus., 1909, p. 191. [Lakehurst, Xew Jersey.] 



1911. Cycloptilus americanus Sherman and Brimley (not Cycloptilum ameri- 

 canum Saussure, 1874), Ent. Xews, XXII, p. 391. [Raleigh and "Ala- 

 mance County," Xorth Carolina.] 



Type: c? ; Texas. (Belfrage.) [Scudder Collection.] 

 Description of Type.— Size small for the group, head very small, 

 interantennal protuberance well produced, rounded, with trace of 

 vertical division. Maxillary palpi with penultimate joint not more 

 than two-thirds as long as terminal joint, the latter gently expanding 

 distad, gently obliquely truncate. Eyes reniform in outline, sub- 

 vertical. Pronotum strongly narrowed cephalad, considerably 



