Animals of the Mississippi Bottoms near Quincif. 177 



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, August 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 inner 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. Gomphiis pallidus^ Rarab., 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 abdominal segments 7-9. It may be distin- 

 guished 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 meas- 

 uring 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 



