288 NEW YORK STATE MUSEUM 



4. Tanytarsus deflectus n. sp. 



(P1.30, fig.l6) 



Female. Brown; abdomen paler. Head, including palpi and 

 antennae brown, second and third joints of the antenna more 

 or less coalescent; rostrum with prominent black setae. Thorax 

 including pleura, pectus, and metanotum, brown ; the first with 

 three darker brown stripes; scutellum a little paler. Dorsum of 

 thorax with dark setae. Abdomen uniformly yellowish brown, 

 with black hairs. Legs, including coxae, brownish yellow, the 

 knees slightly darker ; quite hairy ; fore metatarsus about one 

 fifth longer than its tibia. Wings very hairy, anal lobe not 

 prominent. Halteres w^hite. Leng-th 1.5 to 2 mm. 



The respiratory organs of the pupa consist of two slender more 

 or less cylindrical processes armed with one lateral seta at about 

 one third from the apex, and with two or three shorter ones on 

 the apex (pl.22, fig.6). The pupal skin is so mutilated that a 

 further description cannot be given. Several captured and one 

 bred specimen. Ithaca N. Y. 



5. Tanytarsus dives n. sp. 



Larva. The larvae were found in the sand at the bottom of a 

 pool of water, drainings from a pile of manure. Blood red, with 

 a greenish tinge on the sides, and a prominent hump on the 

 ■anterior part of the dorsum of the last segment (pl.26, fig.5). 

 Length G to 7 mm. Head dark, about lY^ times as long as wide, 

 antennae much elongated, about two thirds as long as the head, 

 or fully as long when they are measured to the tips of the two 

 long filaments of the second antenna! segment (pl.26, fig.l). The 

 first joint long and slender, with a slender seta on its side, and 

 a spur at the tip near the base of the second segment; second 

 segment about three times as long as wide, with two long slender 

 filaments at the tip near base of third segment. The third and 

 fourth segments slender, delicate, and inconspicuous; these two 

 taken together less than the length of the second joint. The 

 dorsal sclerite of the head not distinctly separated from the 

 laterals. Upon the dorsal aspect of the head are eight pairs of 

 rather long setae, arranged as shown in fig.l. Each antenna is 

 mounted upon a frontal prominence. There are two distinctly 

 separated eye spots upon each side of the head. The labrum is 

 rather more prominent than usual with Chironomus, with 

 five or six pairs of conspicuous curved subapical setae, a pair of 

 pectinate hairs, several pairs of smaller setae, and an apical pair 

 of short, jointed papillae. The epipharynx resembles that of 

 Chironomus, with its horseshoe shaped ridges, the curved, 



