118 ENTOMOLOGICAL NEWS [April, '22 



Width of black middorsal thoracic stripe about .7, of the ante- 

 humeral about .35, of black humeral about .44 mm. 



Second lateral thoracic suture with a black stripe its entire length, 

 widening posteriorly from a narrow line at its anterior end. 



Black on dorsum of abdominal segment 9 of uniform width. 



Abdomen $ 24.5-25.5, 9 26; hind wing $ 14.5, $ 17; stigma 

 front wing $ .5-.S3, 9 .61, of hind wing $ .5-. 53, 9 .67 mm. 



Anal bridge in front wing separating from the hind margin 

 proximal to Cu-A a distance equal to about one and one-half times 

 the length of Cu-A ; in the hind wing a distance slightly greater 

 than the length of Cu-A. M2 front wing arising at or near the 

 fourth postnodal in 2 male wings, at or near the fifth postnodal in 

 8 male and 2 female wings ; M2 hind wing arising at or near the 

 fourth postnodal in 10 male and 2 female wings; Mia front wing 

 arising at the seventh postnodal in 6 male and 2 female wings, at the 

 eighth postnodal in 4 male wings; Mia hind wing arising at the sixth 

 postnodal in 3 male and 1 female wings, at the seventh postnodal in 7 

 male and 1 female wings. 



Material examined : Buckeye Homestead Pond, Enterprise, 

 Florida, April 21 and 26, 1921, J. H. Williamson, 13 $, 1 9 ; 

 Type $ and alloiypc $ , April 21, coll. E. B. W. 



Mr. Williamson noted of this species on April 21 ; "Occurred 

 at Buckeye (Homestead) Pond. Generally found resting in 

 inner ring of vegetation where the water was about waist deep. 

 Seen only at rest and hard to find.' 



j 



(To be continued) 



EXPLANATION OF PLATE VI. 



Figs. 1-5. Enallagma sidcatnm n. sp. Figs. 1-3, appendages of the 

 $ type in lateral, dorsal and dorso-oblique views. Fig. 4, dorsal view 

 of head of $ type. Fig. 5, dorso-oblique view of middle lobe of pro- 

 thorax of 9 allotype. 



Figs. 6-10. Enallagma concision n. sp. Figs. 6-8, appendages of $ 

 type in lateral, dorsal and dorso-oblique views. Fig. 9, dorsal view 

 of head of $ type. Fig. 10, dorso-oblique view of middle lobe of 



prothorax of 9 allotype. 



> 



Information on Bibliographies and Catalogs Wanted. 



The Division of Biology and Agriculture and the Research Informa- 

 tion Service, National Research Council, are undertaking a canvas of 

 manuscript and published bibliographies on plant and animal biology, 

 and of manuscript of plants and animals (recent and fossil), with the 

 view of relieving the needs of working biologists along these lines. 

 Blank forms for reporting such information may be obtained from C. 

 J. West of the Council, 1701 Massachusetts Ave., Washington, D. C. 



