108 



ing in having only about three blunt teeth on the inner edge of 

 the labial palpi. The commonest Gomphus at Quiiicy. Of vari- 

 ous sizes, some apparently ready to yield adults. 



This is the Gomphus Jiurialis of Mr. Walsh. Of the adult 

 dragon fly, Mr. TV. says that it flies constantly over water, and he 

 thinks feeds exclusively on aquatic insects. It does not, as he 

 supposed, breed exclusively in running water. Common. 



Localities: Willow Slough, Lily Lake, Broad Lake, Wood 

 Slough. 



7. Anax jimms, Drury. 



The adult is one of our largest and commonest dragon flies. 

 Its genera] color is obscure green, with some blue and black 

 markings. Wings clear, with a yellow wash. The young are to be 

 distinguished from all others taken at Quiucy by the characters 

 given at the beginning of this group. The very young are 

 marked with wide transverse alternating bauds of black and white. 



Taken only in Long Lake, although the adults were seen now 

 and then about several of the sloughs. 



8. EpicBschna heros, (Fab.) Hagen. 



Two small nymphs, the largest one about .72 inch long, were 

 taken in Wood Slough August 6. They were found clinging to 

 dead sticks, depending apparently on their dark obscure colors 

 for immunity from enemies. They agree in the main with Mr. 

 Cabot's description of the young of this species. The antennae 

 are of six articles, the distal one being longest. The labium is cleft, 

 but lacks the tooth at each side. There are lateral spines on the 

 abdominal segments 5-9, and most of the segments have a median 

 dorsal ridge terminating in a tooth behind. 



9. Lihellulina, nymph. 



A stout-bodied, pale brown nymph with scattered specks and 

 spots of brown. Legs annulate with brown. Segments 8 and 9 

 of the abdomen with large lateral spines; no dorsal hooks or 

 tubercles. The digestives tubes of several examples contained a 

 good many microscopic plants and animals, togetlier with a brown 

 granular matter which I think had been gathered from the bot- 

 tom. Extremely common in the upper part of Cedar Creek; the 

 only young of this group taken there. 



10. Lihellidina, nymph. 



With a genera] resemblance to number 8, but rouglier, and 

 the markings very obscure. A pair of tubercles between the' eyes. 

 A series of erect cultriform hooks on the middle of the abdomen, 

 above. From the alimentary canal of one specimen a small mite 

 was taken. Others examined did not contain food. Common and 

 widely distributed. 



Localities: Harlvuess Slough, Ballard Slough, Willow Slough, 

 Lily Lake, Long Lake, Broad Lake. 



