114 ENTOMOLOGICAL NEWS [April. "22 



Enallagmas Collected in Florida and South Carolina 

 by Jesse H. Williamson with Descriptions of 

 Two New Species (Odonata, Agrionidae). 



By E. B. WILLIAMSON, Bluffton, Indiana. 



(Plate VI) 



Mr. Williamson collected dragonflies in Florida from March 

 1 to April 26, 1921. Localities visited and dates are as fol- 

 lows: Sebring, March 1; Fort Myers, March 3-7 and 10-19; 

 Taxambas, Marco Island, March 8; Labelle. March 21-27; 

 Moore Haven, March 29 and 30, and April 2 ; Palmdale, March 

 31 and April 3-8; enroute Moore Haven to West Palm Beach, 

 across Lake Okeechobee, April 9; Miami, April 12 ; Enter- 

 prise, April 15-26. From April 29 to May 9 he collected at 

 Kathwood. Aiken County, South Carolina, but at this time 

 most of the species observed were just emerging. Mr. Wil- 

 liamson has distributed his Florida dragonflies into twenty- 

 five sets which he has donated to students of Odonata. 



Dr. Calvert's recent paper, Gundlach's JTork on the Odonata 

 of Cuba, (Trans. Am. Ent. Soc., XLV, 1919) contains a care- 

 ful study of certain Enallagmas, related to EnaUagina tntn- 

 catinn, which may be designated as the pollution group. This 

 work of Dr. Calvert's has made possible the recognition of 

 two undescribed species of the group from Florida. The 

 following descriptions of these species follow the form of 

 Calvert's descriptions and are supplementary to his paper. 



Enallagma sulcatum new species (PI. VI, Figs. 1-5). 



$ . Superior appendages in profile view with the apical margin 

 suhequal to the inferior margin, produced; in dorsal view, the intero- 

 inferior lamella reaching far beyond the level of the supero-internal 

 apical hook. 



Nasus shining black, with a small pale area on either side (similar 

 to that of truncatum in Calvert's figure 1, except that the black extends 

 nearly or quite to the anterior and lateral margins), to largely orange 

 with a transverse bar across the base and another paralleling the 

 anterior margin, these bars connected or not at their extremities and 

 in the median line, and the anterior bar sometimes broken with orange. 



Frons : pale color of the anterior surface not reaching the yellow or 

 orange spot immediately anterior to the median ocellus ; in some speci- 

 mens the black anteriorly is slightly more reduced than in figure 4. 



