MAY FLIES AND MIDGES OF NEW YORK 249 



80. Chironomus sp. 



1896 Chironomus Osborn. Bill. Iowa Exp. Station. p.405 



The larvae were found in the city water at Boone, Iowa. The 

 larva is figured and briefly dest-ribed by Osborn, loc. cit. It is 

 biood red, possesses the four ventral blood gills of the eleventh 

 segment as well as the anal gills. The figure shows the labium 

 with the middle tooth shorter than the first laterals; the last 

 laterals longer than those immediately preceding (pl.37, fig.26, 

 after Osborn). 



81. Chironomus sp? 

 (PI. 22, flg.7) 



Yellow larvae 6 or 7 mm. long from Saranac Inn N. Y. Head 

 pale yellow, tip of mandible and labium black. The labrum, 

 antennae and epipharynx resemble that of O r t h o c 1 a d i u s 

 shown on pi.2o, fig.3. The lateral surface of the mandible is not 

 wrinkled; the maxillae and the labium are as shown in pl.22, fig.7. 

 The setae of the anterior prolegs are delicate, curved and appar- 

 ently not pectinate. The posterior appendages resemble those 

 shown on pi. 25, fi^.6. 



82. Chironomus sp. 



(Pl.22, fig.22) 

 Larvae from Saranac Inn and from Ithaca N. Y. Blood red ; 

 length 8 to 10 mm.; resembling the larvae of C. flavicin- 

 g u 1 a . Differ in having the middle pair of teeth of the labium 

 paler than the laterals. 



83. Chironomus sp. 



A blood worm from Beebe lake, Ithaca N. Y. ; resembles the 

 larva of C. flavicingula in form, size, color, shape of 

 prOlegs, and appendages, etc. but differs in the form of its labium, 

 there being an even number of teeth arranged as shown on pi. 23, 

 fig.6. 



84. Chironomus sp. 



The larvae (collected at Saranac Inn N. Y.) construct loose, 

 black, cylindrical cases com]iosed of sand, decaying leaves, etc. 

 These cases are about four times as long as wide. The length of 

 the larva is about 10 mm.; the maxillae resembles that shown on 

 pl.22, fig.7. The margin of the labium is as shown on 1)1.22, fig.21. 

 The eyes are each composed of two distinctly separated spots. 



85. Chironomus sp. 

 1900 Chironomus Pettit. Mich. Acad. Sc. 



The larvae are pale green in color, and very small and slender. 

 They were found to mine in the water-lily leaves. The insect 

 works by tunneling or plowing a furrow which extends from the 



