420 THE CANADIAN ENTOMOLOGIST 



spinulose on distal half above, about twice as long as lateral ap- 

 pendages and reaching back nearly to tips of inferior appendage; 

 basal breadth about three-quarters of the length. 



Colour pattern (exuvia) — Dull brownish more or less dis- 

 tinctly marked with paler yellowish. Head dark, sometimes 

 streaked with pale yellowish behind and beneath the eyes; thorax 

 obscurely mottled; wing-pads with more or less distinct pale costal 

 streaks; legs pale with darker annuli as follows: femora with sub- 

 basal, anteapical and apical, tibiee with basal, median and apical 

 annuli, tarsal joints darkened distally. These markings are often 

 largely obscure, the anteapical femoral rings being the most dis- 

 tinct and constant. Abdomen dark above with a median line, a 

 pair of dorso-lateral spots and the postero-lateral angles on most 

 of the segments pale. 



Venter pale with three longitudinal dark bands, which may be 

 somewhat obscure but are generally heavy and conspicuous. They 

 are usually narrower but sometimes broader than the intervening 

 pale areas. 



Length of body 19.0-21.5 mm.; outer wing-pad 6.0-6.5 mm.; 

 hind femora 5.0-5.8 mm.; width of head 5.25-5.6 mm.; width of 

 abdomen 6.7-7.3 mm. 



This nymph closely resembles that of L.hudsonica, particularly 

 in the absence of dorsal hooks and the conspicuously striped 

 venter of the abdomen. It is, however, easily distinguished from 

 hudsonica by its larger size and the shorter lateral spines on 

 segments 8 and 9. 



Leucorrhinia proxima Calvert. 



Nymph. — Exuvia similar to that of L. intacta, slightly larger. 

 Head a trifle longer and the eyes a shade more prominent. Width 

 of head across the eyes about twice the length (not including 

 labium) postero-lateral surfaces broadly rounded with numerous 

 bristles. Labium of the usual form, the mentum quite similar 

 to that of intacta, slightly longer than broad, middle lobe bluntly 

 obtusangulate. Inner margins of lateral lobes with the usual broad, 

 low crenulations, which are minutely, secondarily crenulate, the 

 spines mostly in groups of two, of which one is much shorter than 

 the other, a few single. Movable hook slender, nearly half as 



