498 NEW YORK STATE MUSEUM 



crane fly, Tipula abdominalis, and the phantom fly, B i 1 1 a c o - 

 morpha clavipes, larvae. But Httle collecting was done in such 

 net-clogging situations, and hence, but a few of the nymphs were 

 obtained. A single cast skin was found on a stump in the edge of a 

 boggy place in Little Clear outlet, about eight inches above the surface 

 of the water. 



Nymph. Measures in total length 20 mm, abdomen 11 mm; hind 

 emur 6 mm; width of head 5 mm, of abdomen 7 mm. 



Color brownish, due to copious incrustation in all my specimens, with 

 no visible color pattern. 



Head compact, shghtly broader than long; eyes only moderately 

 prominent, with parabolic curve on the anterior side ; antennae with 

 segments about equal, the last, perhaps, a little shorter and pointed; 

 labium reaching posteriorly between the bases of the fore legs and hardly 

 beyond them; mentum triangular, channeled; the median lobe rather 

 prominent, decHned, fringed sparsely with short spinules along its fore 

 margin; mental setae about 10 or 11, the fifth or sixth (counting from 

 the side) longest; lateral setae seven or six, when seven the basal one 

 smaller than the others ; movable hook hardly longer than the setae, but 

 much stouter; lateral lobe with about seven low crenate teeth on its 

 distal border, each armed with two or three graduated spinules. 



Prothorax with a prominent lateral process at each side of the dorsum 

 and a similar anteriorly directed process above the fore coxa ; legs 

 slender and sparsely hairy ; tarsi with the first joint about half as long as 

 the second, which about equals the third in length. 



Abdomen broadly oval, with dorsal hooks on segments 6-9, on 6 

 rudimentary, a mere low pointed tubercle, on 7-9 cultriform, largest on 8. 

 Lateral spines on segments 8 and 9, a little larger on 9, short, triangular, 

 sharp, those of 9 about one third as long as that segment, and about 

 reaching the level of the tips of the appendages. Segment 10 is minute, 

 annular, inserted into the apex of the ninth segment, which is less than 

 half as long on its middorsal as on its midventral line ; superior and 

 inferior appendages about as long as segment 9 above, laterals one third 

 shorter. 



SOMATOCHLORA 



This genus is by far the largest in our corduline fauna. I have set 

 apart three species hitherto placed in it, and, with these aside, it still 

 comprises about half of the subfamily. The species seem to be common 

 only in high altitudes in the northern part of the United States, and in 

 British America. In all my collecting I have observed but one species 

 in flight. This species was S. elongata, of which a few specimens 

 were seen flying about the borders of Bone pond on Aug. 14. I obtained 

 one nymph only of the species. That one was from Little Clear pond. 

 From it I bred a fine male imago July 5. This seems to be the only 

 specimen bred for all of our species; and so diverse are the imagos among 

 themselves that the nymphs may hardly be expected to conform closely 

 to the characters of this one in details. I give herewith figures of the 



