DIDYMOPS. 135 



triangular basal spot to the posterior ones, a large fenestrated, 

 nodal spot, and the apices of all the wings brownish, pterostigma 

 small, black; membranule large, white, the apex brownish-cinereous. 



Var. The spots of the wings smaller, or almost wanting. 



Eight antecubitals; 5 6 postcubitals; two discoidal areolets. 



Length 63 millim. Alar expanse 88 93 millim. Pterostigma 

 3 millim. 



Hob. Pecos River, Western Texas ; Georgia (Abbot) ; Mary- 

 land. 



A large specimen (J*) from Georgia, has 72 millims. length; 

 alar expanse 102 millim., the fuscous spots of the wings are broader 

 but it is hardly distinct. 



DIDYMOPS RAMBUR. 



Triangles with transverse veins ; tarsal nails bifid, the branches 

 equal. 



1. D. transversal 



Libellula transversa Say, Journ. Acad. VIII, 19, 3. Epophthalmia cinna- 

 monea Burm. Handb. II, 845, 2. Didymops Servillii Ramb. ! Neu- 

 ropt. 142, 1. 



Rufo-fuscous, villous; front with a transverse, yellow fascia, 

 above excavated, ach side with a yellow spot ; thorax rufo-fuscous, 

 each side with an obljque, whitish stripe ; abdomen stout, almost 

 cylindrical, rufo-fuscous, the segments paler at base; appendages 

 short, fuscous; vulvar lamina truncatedly-excised, short; feet 

 rufous, tibia3 yellow exteriorly, tarsi black ; wings hyaline, veins 

 rufous, with a short, rufo-fuscous, basal, longitudinal spot, ptero- 

 stigma small, fulvous ; membranule white, the apex cinereous. 

 (Female.) 



Appendages of the male lanceolate, subarcuated, the apex exte- 

 riorly subdenticulated; the inferior appendage equal to the supe- 

 riors. (From the description of Say.) 



12 13 antecubitals; nine postcubitals; two discoidal areolets. 



Length 55 millim. Alar expanse 7580 millim. Pterostigma 

 2 millim. 



Hob. Carolina (Zimmerman); Washington (Osten Sacken) ; 

 Massachusetts (Say) ; Pennsylvania (Ziegler) ; New York (Asa 

 -Fitch). 



