Hagen.] 352 [March 25, 



from near Boston, Mass., except one female from Detroit, Mich. 

 There would be no doubt at all, if I had not discovered a single 

 pair of a nearly related species from Druid Hill, a locality near 

 Baltimore, Md., jE. Antilope Hag. A single female, the locality of 

 which is not known, in my collection, communicated to me long 

 ago, belongs to the same species. In JE. Antilope the abdomen 

 is not so much contracted in the third segment, the inferior append- 

 age not so widely emarginated, the superior ones nearly straight, the 

 number of post-cubital veins less (four instead of six). The female 

 figured by Abbot has a yellowish tinge around the nodus, wanting in 

 the three females of JE. furcillata I have seen. The descriptions of 

 2E. furcillata are imperfect, and made from only two males. 

 Msclina furcillata Say, Journ. Acad. Philad., vin, 15, 7; Edit. 



LeConte, i, 391, 7. Hagen, Syn. N. Amer. Neur., 131, 25; 



Proc. Bost. Soc. Nat. Hist., 1873, 272, 33.— Gynacantlia quad- 



rifida Rbr. Neur., 209, 1. 

 Male, eyes green (Abbot); labium dull luteous, the margin brown, 

 a deeply impressed middle line black ; the lateral lobes brownish in 

 the middle; labrum dull luteous, the anterior margin black, emargin- 

 ate in the middle ; front dull luteous, above with a black T-shaped 

 spot, large, triangularly dilated at the base, sloping down a little 

 on the sides of the front ; antennse black ; vertex inflated, dull lute- 

 ous, darker on top, with black hairs ; occiput dark, a little excavated 

 before, with black hairs ; eyes behind black, sinuated posteriorly ; 

 dorsum of the thorax brown, villous with brown, on each side an 

 elongated quadrangular band, somewhat oblique, and smaller trans- 

 versal one above it near the wings, both green ; more outside, near the 

 black humeral line, an elongated spot and a smaller one above, also 

 green ; dorsal carina black, elevated ; the sinus brown ; the sides of 

 the thorax greenish, with two oblique black bands, the anterior 

 broad, its superior third suddenly narrowed ; the posterior on the 

 suture, somewhat irregular, both connected beneath, and also with 

 the humeral line ; thorax beneath brown with large black lateral 

 spots ; axillary callus of the wings green ; abdomen cylindrical, thin, 

 the base inflated, the third segment very much contracted ; abdomen 

 dark brown, segments three to eight, with a double spot at tip, a 

 smaller double on the middle, and a triangular spot at base ; all 

 spots green (Abbot) ; on second segment the spots are larger, and a 

 small double spot more between the apical ones (Abbot) ; segment 

 nine with a larger double spot at tip ; segment ten dark brown ; seg- 



