MAY FLIES AND MIDGES OF NEW YORK 249 



80. Chironomus sp. 



1896 Chironomus Osborn. Bui. Iowa Exp. Station, p.405 



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

 larva is figured and briefly described by Osborn, loc. cit. It is 

 blood 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. CKironomus sp? 

 (P1.22, fig.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 Orthocladius 

 shown on pl.25, 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 pl.25, fig.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- 

 gula. Differ in having the middle pair of teeth of the labium 

 paler than the laterals. 



83. Chirononms 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 pl.23, 

 fig.6. 



84. Chironomus sp. 



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

 black, cylindrical cases composed 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 pl.22, fig.21. 

 The eyes are each composed of two distinctly separated spots. 



85. Chirononms 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 



