THE [MMATURE STATE OF THE ODONATA. 



pendages short, as long- as the last two segments, thick at base, triangular 

 and sharp on tip; upper one a little shorter; laterals one third as long 

 as the inferiors; longitudinal ventral sutures straight; space between them 

 broader than the lateral spaces ; basal angle of segments 5 to 8 separated 

 triangularly : body sparsely hairy, ventral apical border of 9th segment with 

 a longer fringe of hairs. Legs long, hairy, similar to C. metallica. 



The tip of femur and the middle of the tarsi are less dark than the 

 somewhat reddish. 



C. albicincta Br. (= C. eremitica Scud.) is the most common species 

 collected near Hermit Lake, so that the supposition seems to be very 

 probable. 



22. CORDULIA SPEC. 



Plate V. Fig. 2. 



Among the nymphae supposed to belong to C. albicincta, from Hermit 

 Lake, N. H., collected, July, 1875, by II. Morrison, was one not full-grown 

 male. Length. 18 mm. ; breadth, 7 mm. 



This nympha belongs evidently to a different species ; body somewhat 

 flatter, not rounded, very little hairy; light brownish yellow, abdomen 

 above has ill-defined brownish bands; lateral spines, lateral appendages, 

 and bristles on the border of segments 8 and 9 bright yellow ; the under 

 side yellow, along the abdomen three broad black bands, a character al- 

 together unusual among nymphae of Odonata. The difference of C. albi- 

 cincta is shown by the longer and more slender straight lateral spines, 

 and the longer appendages ; also by thinner and shorter legs. 



Probably the nympha belongs to one of the other four species collected 

 near Hermit Lake, perhaps — as the nympha is somewhat aberrant — to 

 the most aberrant of these imagos, C. Walshii, of which till now only three 

 males are known. 



23. CORDULIA GtRAYI Selts. (Raised.) 



Plate V, Fig. 3. 



Synops. Cordulines, p. 49, no. 27; Additions I., p. 14. 



An empty nympha skin with the imago just raised, and two nymphae, 

 one in alcohol, just transforming, from Queenstown, New Zealand, De- 

 cember 12. Length. 27 mm. ; breadth. 8 mm. 



