June, 1914.] Rehn-Hebard: The Genus Doru. 95 



Thompsons Mills, Ga., April, 191 1 (Allard), i female. [U. S. 

 Nat. Mus.] 



Austell, Ga., Aug. 6, 1910, i female. [Ga. State Collection.] 



Buckhead, Fulton County, Ga., April 16, 191 1, i male, 2 females, 

 2 adults; Aug. 2, 1913 (R. & H.), 2 females. [Ga. State Collection, 

 Acad. Nat. Sci. Phila. and Hebard Collection.] 



Atlanta, Ga., July, l female. [Ga. State Collection.] 



Doru davisi new species. 



Distinguished from its nearest ally, D. acideatiim, by the more 

 attenuate general structure, in the male sex by the very much longer 

 pygidial spine and very different forceps. 



Type: Male; South Bay, Lake Okeechobee, Florida. May 2, 

 1912. (Wm. T. Davis.) Hebard Collection. 



6 8 



Doru davisi, n. sp. Dorsal outline Lateral outline of male forceps of 



of type. Doru aculeatum (7; Mineral Springs, 



Indiana) and Doru davisi (8; type). 



Description of type : Size rather large for genus ; form attenuate ; surface 

 polished, with abdominal segments very finely punctate excepting the distal 

 segment. Head, pronotum, tegmina and wings as in D. aculeatum, the wings 

 aborted and wholly concealed by the tegmina as in that species. Abdomen 

 more produced, the proximal joints more compressed than in aculeatum. 

 Forceps longer than abdomen, the proximal fourth stout, triquetral, with the 

 ventro-internal margins of this portion weakly and rather distantly supplied 

 with tubercles. Pygidial spine decidedly acicular, considerably longer than the 

 distal abdominal segment. 



Color : In general chestnut brown shading to chestnut on the forceps ; 

 limbs, lateral margins of dorsum of pronotum and cephalic portions of 

 tegmina mummy brown. 



