Till: [MM V II RE ST VII. OF THE ODONA'J L 29 



as tlic last two segments, small, similar to E. princeps, as is also the dorsal of 

 the male ; legs as in E. princeps, hind femora not reaching 8tb segment ; 1st 

 joint of lasi tarsus less than half as long as ii.1 ; anterior ami median legs with 



two dark rings on femur ami tibia. 



This species lias the part of the forehead between the antennas thickened 



ami a little elevated : in the middle of this part there is belov\ a hiiiieh of 



bristles. It is obvious that this arrangement is an indication of. and homolo- 

 gous to. the frontal horn of Maeromia. A number of specimens have the 



lateral spine on 9th segment only half as Ion--, and sometimes the two 

 tubercles on the head less developed; probably they belong to some of the 

 numerous varieties of this species. 



Dr. Packard's description is very fair; the statement that the teeth of the 

 palpus do not interlock is to he amended. 



16. EPITHECA SEMIAQUEA Burm. (Supposition.) 



Three nympha skins from .Massachusetts. Length, 18 mm.; breadth, 

 6 mm.; 9th segment with lateral spine. 3 mm. 



Very similar to E. cynosura, hut smaller, and the lateral spine half as 

 long; tubercles on head behind suture nearly absent, only indicated; lateral 

 spine on segment 9 shorter, only a little longer than the appendages; the 

 dorsal median of the male thickened above at apical third. The nympha 

 only differs -in the shorter lateral spine on segment 9; as there are varie- 

 ties of E. cynosura, and as E. semiaquea belongs probably to the same 

 species, it seems very probable that these nympha? belong to them. 



17. EPITHECA SPEC. 



Plate IV. Fig. 2. 



Five dry nympha? from Kanagawa, Japan, from J. T. Gulick. Length, 

 20 mm.; breadth, 5 mm. 



Body naked, brownish ; head as broad as the abdomen, broader than 

 long; eyes comparatively small, short, conical; transverse suture in the 

 middle of the head, slightly convex, in the middle very slightly notched ; 

 part before the suture black, Hat ; vertex very little convex, the ocelli 

 strongly indicated, yellowish; front border straight; antenna? dull yellow- 

 ish, longer than the palpi, seta nearly as thick as the base ; part behind the 



