INVESTIGATIONS ON THE MUTILLID WASPS 187 



The types of chattahoochei and arenerronea have been examined 

 and found to be identical. The appearance of the posterior portion 

 of the head varies according to its position and the angle of view. 

 I can find no fundamental difference between the two types. The 

 most characteristic feature of the species is the sculpture of the 

 posterior and dorsal surfaces of the propodeum which are asperated ; 

 the general surface of the propodeum is smooth with strong, pointed, 

 tooth-like elevations scattered over it giving the propodeum a rasp- 

 like appearance. The specimens vary in length from 5.5 to 8 mm. 



69. DASYMUTILLA RUGULOSA (Fox) 



Mutilla rugulosa Fox, Trans. Amer. Ent. Soc, vol. 25, p. 24u, 1899, female. 

 Ephuta {Ephuta) ritffulosa Andre, Gen. Ins., vol. 1, fasc. 11, p. 63, 1903, 



female. 

 Mutilla infensa Melander and Brxjes, Biol. Bull., vol. 5, p. 24, 1903, 

 female. — Melander, Trans. Amer. Ent. Soc, vol. 29, p. 299, 1903, female. 

 Mutilla canella Melander, Trans. Amer. Ent. Soc, vol. 29, p. 298, 1903, 



female. 

 Dasymutilla {Dasymutilla) rugulosa Bradley, Trans. Amer. Ent. Soc, vol, 



42, p. 325, 1916, female. 

 Dasymutilla vesta Washbxjrn, 17th Kept. State Entomologist of Minn., p. 



209, fig. 95, 1918 (not of Cresson). 

 Dasymutilla rugulosa Banks, Ann. Ent. Soc. Amer., vol. 14, p. 25, 1921, 

 female.— MicKEL, 19tli Rept. State Entomologist of Minn., p. 106, 1923, 

 female. 

 Type. — Female, Southern New Jersey, September, in collection of 

 Entomological Society of Philadelphia. The type of infensa is in 

 the collection of Washington State College, Pullman, Washington. 



DistHhution. —Maissa.chusetts, Connecticut, New York, New Jersey, 

 Michigan, Indiana, Minnesota, South Dakota, North Dakota, and 

 Manitoba, Canada. (Fig. 19.) 



SPECIMENS EXAMINED 



Connecticut: Female, Lyme, August 15, 1915. 



Indiana: Female, Hebron, .July 17, 1925 (J. A. Harris, Jr.); female, Gary, 



July 18, 1925 (J. A. Harris, Jr.). 

 Manitoba, Canada: Female, Aweme, July 23, 1915 (N. Criddle). 

 Michigan: 35 females, Ann Arbor, July 16, 1923 (E. G. Anderson) ; 4 females, 



Ann Arbor, August 24, 1923 (E. G. Anderson) ; female, Dexter, July 18, 



1923 (E. G. Anderson) ; 7 females. Dexter, July 27, 1924 (E. G. Anderson) ; 

 female, Dexter, September 14, 1924 (E. G. Anderson) ; female, Dexter, 

 September 16, 1924 (E. G. Anderson) ; 2 females, Dexter, September 19, 



1924 (E. G. Anderson) ; 2 females, Dexter (E. G. Anderson) ; 2 females, 

 Jackson, July 22, 1925 (G. E. Matson) ; 4 females, Jackson, July 24, 1925 

 (G. E. Matson) ; female, Jackson. July 25, 1925 (W. M. McComb) ; 2 

 females, Jackson, July 29, 1925 (W. M. McComb) ; female, Jackson, July 

 29, 1925 (G. E. Matson) ; female, Jackson, August 4, 1925 (G. E. Matson) ; 



I 



