108 Psyche [June 



The male of Alj;oa differs strikingly from all of the foregoing 

 by the bisj^inose ai-mature at the apex of the abdomen, which 

 recalls that of the otluM-wise very different Mutillidip. The male 

 of Sierolomorpha has no spines that project beyond the tip of the 

 abdomen. In Algoa I cannot find the "stylet" described by 

 Kieffer for Olixon, which is evidently retracted in my specimen of 

 Algoa, although the male of Ampulicimorpha bears a pair of 

 spatulate claspers that project b(\vond the tip of the abdomen on 

 each side of a median 'stylet. 



LITERATURE CITED. 



Ashmead, IT. //. 



'02 Classification of the Fossorial Predaceoiis and Parasitic 



Wasps, or the Superfamily Vespoidea. Paper No. 10. 



Canadian Entom., vol. 34, pp. 287-291. 

 'OS'"^ Ibid, Paper No. 12, ibid, vol. 35, pp. 39-44. 

 '03*^ Ibidem, Paper, No. 14, /. c. pp. 115-158. 



Bridwell, J. C. 



'08 Some Remarkable Australian Hymenoptera. Proc. 

 Hawaiian Entom. Sec, vol. 2, pp. 27-35. 



Brues, C. T. 



'05 Notes and Description of North American Parasitic 



Hymenoptera. Bull. Wisconsin Nat. Hist. Soc, 



vol. 3, pp. 183-188. 

 '10 Some Notes on the Geological History of the Parasitic 



Hymenoptera. Journ. New York. Entom., Soc, 



vol. 18, pp. 1-22, 5 figs. 

 '22 The Embolemid Genus Pedinomma in North America. 



Psyche, vol. 29, pp. 6-8. 



Cameron, P. 



'87 Biologia Centrali-Americana, Hymen., vol. 1, p. 412* 



Hood, J.D. 



'13 Notes on the Life History of Rhopalosotna poeyi 

 Cresson. Proc. Entom. Soc. Washington, vol. 15, 

 pp. 145-147, 1 fig. 



