June, 1914.] Rehx-Hebard: The Genus Doru. 93 



Cuernavaca, Mor., Mex., July 30, 1903, 5,021 ft. (Tower), 2 males, 



3 females, in garden in town; slope W. of town, Aug. i, 1903, 5,200 

 ft. (Tower), i male, semi-arid upland; Feb., June, Sept. (Barrett), 



4 males, 2 females. [Tower Collection, Acad. Xat. Sci. Phila. and 

 Hebard Collection.] 



IMatamoros, j\Ior., IMex., Aug. 12, 1903 (Towerj), i male. [Tower 

 Collection.] 



Chilpancingo, Guerrero, Mex., 4,000 ft. (H. H. Smith), i male. 

 [Acad. Nat. Sci. Phila.] 



Chiapas, Mex. (Van Patten), 2 males, 7 females. [Scudder Col- 

 lection.] 



La Zacualpa, Chiapas, IMex., i male, i female. [Am. Mus. Nat. 

 Hist.] 



Male specimens before us showing the extreme condition of deli- 

 cate, more evenly curved and toothless forceps, come from the fol- 

 lowing localities ; one. Sycamore Caiion, Baboquivari ^Its., Ariz. ; 

 one, Cuernavaca, Mor., Mex. ; one, Rio Madeira, Brazil. The other 

 male from the Baboquivari ISIts. also shows this extreme condition 

 except that it possesses a decided inner tooth. The greater part of the 

 rest of the series is more nearly typical of the heavier condition. 



Doru aculeatum (Scudder). 



1862. Forficula aculeata Scudder, Proc. Bost. Soc. Nat. Hist., XVIII, 

 p. 262. (New York; Northern Illinois; Southern Michigan; Cuba?) 



1862. Forficula aculeata Scudder, Bull. U. S. Geo!. Surv. Terr.. II, p. 

 256. (Key.) 



Described from a series of three males and five females from three 

 authentic and one questioned locality. 



5- 



Dorsal outline of Doni aculeatum, from Mineral Springs, Indiana. 



Single type here designated: male; Southern ^lichigan. (M. 

 Miles.) [Scudder Collection.] 



The wings are not absent in this species, as Scudder states in his 



