136 MARINE AND FISHERIES 



5 GEORGE v., A. 1915 



segments 1-8 banded dorsally at posterior margin, remaining parts of these seg- 

 ments being almost white; segments 9 and 10 entirely reddish brown; stigmal 

 dots not marked; wings clouded in pterostigmatic space, a few cells reddish, 

 femora with median and apical bands; tibia-tarsal and tarsal joints black; fifth 

 tarsi and ungues dark. 

 Female imago: 



Measurements: Body 11 mm.; wing 12 mm.; setse 22 mm. 



Abdomen more yellowish than male. 

 Nymph: 



Measurements: Body 10 mm.; setse 13-16 mm. 



Head light brown in colour and dotted with light dots; light areas over ocelli; 

 another at posterior margin of head in median line and a larger one lateral to each 

 eye. Pronotum with a broad colourless lateral margin, remainder light brown 

 numerous irregular light spots. Abdomen darker dorsally and with a rather com- 

 plicated colour pattern. First segment light with 2 brown areas at side; 2nd, 

 a narrow brown band along posterior margin and 5 brown areas and four light ones 

 placed alternately; 3rd almost entirely dark witR a few light dots; 4th with 2 dark 

 spots in posterior lateral angles of segment; also a large dark area in centre of 

 segment with a light area within it; 5th with a dark spot in each posterior lateral 

 angle as in preceding segment; a dark band along posterior margin; 2 light areas 

 surrounded with brown and a dark spot in centre of each; 6th almost entirely 

 brown except for two light areas in anterior lateral angles; 7th with 2 large light 

 areas with a brown dot in each toward inner side; 8th an irregularly light and dark 

 coloured segment; 9th has a narrow brown band along posterior margin and a 

 dark longitudinal stripe in median line; 10th almost entirely dark. Ventrally, 

 the lateral and posterior margins of segments 2-8 dark; segment 9 with two large 

 brown spots. Setae greenish; basal half well fringed at joints, distal half with 

 each two segments alternately light and dark and few hairs at joints. Legs, femora 

 with alternately light and dark irregular bands and covered with minute spines 

 dorsally; posterior margin fringed with hairs; anterior margin also fringed but 

 hairs shorter. Proximal end of tibia dark and has a dark band slightly beyond 

 middle. Tarsi with a reddish brown band, very near proximal end. Claws with 

 two pectinations. 



The nymphs were quite abundant along the open shore of Station Island and 

 west of it, my collections dating from June 3 to July 2. Besides I have a few from 

 a small waterfall on the Musquash River, 3 miles south of Go Home Bay, taken 

 June 30, and 3 small nymphs from Sandy Gray Falls, Aug. 23. Imagos emerged 

 from June 27 to July 3. 



Heptagenia fusca Clemens. 



„ , . (PI. XVI, Fig. 1). 



Male imago: > ^ / 



Measurements: Body 10 mm.; wing 13; setae 26. 



No marks on face; ocelli almost in a straight line, middle one the smallest. 

 Pronotum brown, slightly darker along the median line. Mesothorax uniformly 

 brown. Abdomen with posterior J of each segment of same brown colour as thorax 



