THE [MM \ li 1:1 S'J \ l E OF THE ODOK V£A. 17 



Similar to M. transversa; bod3 flatter, more hairy; bead broader, uearly 

 8 mm., ilai between the prominent eyes; slightly convex above, with n 

 smooth depression along the middle line; hind tubercles of the occipul very 

 visible; abdomen more ovate; less truncated; posterior edge of segmenl 

 narrower; side margin of abdomen more hairy; dorsal hook on segmenl I' 1 

 visible, its tip sharp, sometimes extending beyond the segment; lateral 

 Bpines shorter, on segmenl 9 not longer than LOth segment; apical ventral 

 edge of segment 9 not hairy; appendages longer, dorsal median as long as 



the inferiors; laterals a little shorter, i e pointed. 



As M. Illinoiensis has been found in Massachusetts and New Hampshire, 

 and no other species there except M. transversa, the supposition thai these 

 nymphae belong to M. Illinoiensis is allowable. 1 am not able to separate 

 from the above described nymphae a skin from San Antonio. Tex., collected 

 by Mr. A. Agassi/., nor a number from Dallas, Tex., collected by Mr. J. Boll, in 

 McLachlan's collection. 1 should mention here that the specific character for 

 M. Illinoiensis, "dorsum of thorax without yellow bands," is to be corrected. 

 There are before me two from Dallas with au abrupl yellow hand on each 

 side of the thorax, beginning just above the base of the middle legs, reach- 

 ing only half the length of the thorax. These imagos cannot be considered 

 to be a variety peculiar to Texas, as I have before me another female from 

 Waco. Tex., from Belfrage, which has no yellow hands at all. This opinion 

 is proved to he sound by two just sent to me by Mr. Ph. II. (Jhler, which 

 were caught by him in copulation, September 20, opposite Bittania Mills. Md. 

 The male has the abrupt yellow bands on the dorsum of the thorax, which 

 are wanting entirely on the female, as well as the narrow fascia along the 

 ventral border of the thorax. 



4. MACROMIA ANNULATA Var. FLAVIPENNIS. (Suggestion.) 



Plate II. Fig. 1. 



Imago. Macromia flavipennis Walsh, Proc. Acad. Philad., 1SG2, p. 398 



Maeromia annulate Bag., Syn. X. A. Neur., p. 132. 2 ; Syn. 1ST-"), p. 56. 3. 

 Selys, Syn. Cordul., p. 107. 68. 



One dry nympha, just transforming; thorax of the imago visible ; from 

 De Plaines River, near Chicago, 111., from the late Mr. B. D. Walsh. 

 Length, 29 mm.; breadth, 10 mm. 



:3 



