107 



2. Agrionina, nymph. 



A larva about .72 inch long; common in Long Lake. Chiefly 

 brownish black. A pale, transverse band between the eyes, 

 and a ring of minute, pale dashes at the hind margin of each 

 abdominal segment. Legs chiefly white, a dusky band near the 

 tip of each femur. Caudal respiratory appendages marked with 

 broad, dusky cross bands; with a small spine at the apex of each, 

 and with basal portion of edges spinose. 



3. Agrionina, nymph. 



A short larva, less than .25 inch long, with banded legs and 

 antennae, and a median dorsal pale line extending from head to 

 end of abdomen. Possibly the young of the preceding, but I think 

 not. 



From Wood Slough, Aug. 6. 



4. Gomphus, nymph. 



The larger examples of these young from Quincy are 1.10 inches 

 long. The abdomen is greatly depressed, but is quite uniformly, 

 though slightly, convex above. Palpus of labium with iuner edge 

 toothed to the base, distal tooth not longer than the others. Front 

 edge of labium without median tooth. The wing-pads do not quite 

 reach the hind margin of the second abdominal segment. This 

 agrees with Dr. Hagen's No. 12 in his "Monograph of the Early 

 Stages of Odonata." Common. 



Localities: Quincy Bay, Willow Slough, Lily Lake, Broad Lake, 

 Long Lake. 



5. Gomplius pallidus, Eamb., nymph. 



Dr. Hagen gives as the important characters of the young of this 

 species, the presence of a median tooth on the front edge of the 

 labium, the presence of teeth along the whole inner edge of the 

 labial palpus, a median dorsal spine on the hind edge of the 9th 

 abdominal segment, and the presence of lateral spines on abdomi- 

 nal segments 7-9. It may be distinguished from the two species 

 here noted by the presence along the middle of the abdomen, 

 above, of an obtuse ridge. Very common in some of the sloughs, 

 and of large size, several measuring 1.20 inches in length. All 

 those taken in August were apparently about ready to yield the 

 winged form. Young of this species were taken in Cedar Lake 

 in October, 1882. From the two observations it seems probable 

 that the adults emerge in the latter part of summer, and that the 

 3'oung hatching from their eggs hibernate in the mud. 



From Harkness and Ballard Sloughs. 



6. Gomphus notatus, Ramb., nymph. 



These young are like the two preceding in general appearance, 

 but lack the median tooth of the labium of number -1 and the 

 dorsal ridge of number 5. They ditTer from both of the preced- 



