THE I.M.M \ l'l RE STATE 0] I bill ODONA'J \ l«J 



men elongated, more lancet-shaped; dorsum higher; dorsal hooks smaller 

 than in M. flavipennis, on segments 7 to 9 low, nearly their whole length 

 connected with the dorsum, onlj the pointed tip free; on LO a similar bul 

 smaller hook; lateral spines on 8 and 9 very short, sharp; lasl segment 

 nearly half the length of 9th ; anal appendages forming a broad shorl pyra- 

 mid; appendages broad al base, nol very sharp al tip; dorsal median shorter 

 than ilif inferiors, dilated above (in male) near the tip; laterals a little 

 shorter; space between the ventral longitudinal sutures broader than the 

 laterals: apical edge of 9th ventral segment fringed with hairs; legs very 

 long, mottled with black; femur of hind legs II nun. long; tarsus less than 

 half the tibia. 



There was collected on the same day and at the same locality a female 

 imago. As this is the only Macromia known from Oregon, the supposition 

 seems very plausible. 



6. MACROMIA T^EJNIOLATA. (Supposition.) 



Plate 11. Fig. 4. 



Imago. Macromia ta?niolata Rarnb., Neur., p. 139. 3. Hag., Syn. X. A. Neur., p. 132. 1. 

 Epophthalmia tseniolata Selys, Syn. Cordul., p. 90. 7."'. 



One very large nympha from Volusia, Florida, Feb. 18, 1S69, in alcohol, 

 by Mr. J. A. Allen. Length, 36 mm.; breadth. 15 mm. 



Body large, bulky, villous; head broad (nearly 10 mm.), transverse- 

 oblong, the breadth more than twice the length, deeply notched behind ; 

 flat above between small conical projecting eyes; part back of the eyes 

 much larger than the front part, both villous ; sides convex with a fringe of 

 longer hairs; a smooth band along the middle suture with a villous border 

 on each side; hind angles oblique with a small rounded tubercle; front part 

 separated by a curved suture from the hind part ; vertex small ; front border 

 with a pj'ramidal horn, as long as two basal joints of antenna?, very villous ; 

 antennas short. 1st joint enlarged at tip, which is villous: 2d inserted in tip 

 of 1st. length half the breadth; seta half as thick as 2d. tapering to tip: joints 

 3 to 7 equally long, each a little longer than 1st: mask large; movable hook 

 strong, sharp, short, its tip not extending beyond the base of the opposite 

 one ; the whole mask finely dotted with black. 



Prothorax nearly as broad as occiput; wing cases reaching the end of 6th 

 segment ; abdomen large ovate, dorsum roof-shaped, side margin sharp, vil- 



