28 THE IMMATURE STATE OF THE ODONATA. 



1 to 9, only indicated on 4th. a link- longer and free on 7th, on 9th and 

 8th better indicated; segmenl 9 truncate; L Oth very small, annular, appen- 

 dages scarcely longer than 9th, pyramidal, pointed; dorsal median shorter 

 than inferiors, laterals shorter than median ; ventral sutures straight, con- 

 vergent on 9th segnfent; space between them larger; ventral bag on 6th 

 segmenl ; legs long, thin, hind femur reaching 7th segment, tibia longer 

 with a fringe of long hairs ; tarsus long, basal joint very short. 



15. EPITHECA CYNOSTJRA Say. (Raised). 

 Plate IV. Fig. 1. 



Imago. Iibellula cynosui'a Say. Journ. Acad Phil., Vol. VIII. \>. 30, no. 19. 



Epophthalmia lateralis Br., Vol. II. ]>. 847, no. 7. 



I ordulia lateralis Bag., Syn. X. Am. Neur., p. 139, no. 15. 

 NympliM. Packard, First Ann. Rep. Insects of Mass., 1871, p. 379,.pl. 1, f. 10. 



Cf. the literature quoted fully for Macromia transversa. 



Nympha skin found, June. 1869, at Wakefield, by F. W. Putnam; this is a 

 male, the type of Professor Packard, now in the Musuem of Comparative 

 Zoology ; a number of nympha skins, male and female, collected near Boston, 

 Mass., by S. Benshaw. Length 20-24 mm.; breadth, 7 mm.; Oth segment 

 with lateral spine, 4 mm. 



Body elongate, naked; head little narrower than abdomen, a little longer 

 than half its breadth; sides abruptly sloping behind; eves conical, rounded 

 on top; ocelli strongly marked ; behind the suture two small pointed tuber- 

 cles; occiput slightly notched; space between the antenna?, which are 

 similar to E. I >imaculata, nearly flat ; mask with the basal part longer than 

 broad, with two elevated ridges, parallel and reaching nearly the anterior 

 bolder; palpus triangular, the teeth interlocking; thorax on each side with 

 black broad longitudinal band, wing covers reaching the 6th segment; ab- 

 domen narrow, a little enlarged in middle; less roof-shaped, on each side 

 a series of pale spots, somewhat edged with dark brown ; side margin sharp, 

 with a short fringe ; segments equal, except the last, which is very short, 

 and narrow; lateral spine of 8th very short, of 9th long and sharp, divergent, 

 much longer than the appendages; dorsal horns on 3d to Oth, the first three 

 like spines, the following flattened laterally, the tip bent backward, on 9th 

 more incurved, a little longer than the segment; appendages about as long 



