256 THE CANADIAN ENTOMOLOGIST 



NF.W SPECIES OF ODONATA FROM THE SOUTH- 

 WESTERN UNITED STATES. 

 Part I. Three New Argias. 



BY CLARENCE HAMILTON KENNEDY, CORNELL UNIVERSITY, 



ITHACA, N.Y. 



The following new species of Argia have been in the writer's 

 hands for three years awaiting such time as he might have to 

 describe them. The specimens from the Museum of Comparative 

 Zoology labelled soUta were called to my attention by Dr. Calvert. 

 I wish to thank Dr. Calvert and Dr. Banks for the privilege of 

 describing these. After I had taken hinei at Fillmore, Calif., 

 I found that Dr. Hine had taken it in Arizona and his material 

 was in Mr. Williamson's hands awaiting description. I wish to 

 thank Mr. Williamson for the privilege of describing these. 



Argia solita, n. sp. 



Holotype. — Male in the Museum of Comparative Zoology, 

 Caml)ridge, Mass., with the pin labels; "Arizona, C. U. Lot "35;" 

 and "A. solita." The Cornell catalogue shows that this was pur- 

 chased from H. K. Morrison in 1883, when it was probably sent 

 to Hagen for identification. 



A study of the penes shows this to be a near relative of Argia 

 agrioides. Among my material of agrioides from California are 

 specimens from Chico which have unforked humeral stripes and 

 which in drying have turned partially violet, so this may be a 

 badly faded, pale variety of agrioides. 



Length of abdomen 26 mm., length of hind wing 22 mm. 



Colour: labium creamy; entire face and head otherwise violet, 

 except rear of head which is pale (creamy?). Eyes? 



Prothorax violet with a small black spot on the side. Meso- 

 thorax and metathorax violet, shading to creamy below with a 

 mid-dorsal black stripe one-sixth as wide as either mesepisternum. 

 Humeral stripe a hair line and a similar black line on second 

 lateral suture. Legs and feet pale with a narrow, external black 

 stripe on the femur. Wings hyaline, pterostigma mounting but 

 one cell and brown in colour. 



Abdomen violet. Segments 1 and 2 without distinct mark- 

 ings except a lateral spot at apex of seg. 1 and a narrow, black 

 ring around apex of seg. 2. Segs. 3-6 each with a narrow, black 



August, 1918 



