MAY FLIES AND MIDGES OF NEW YORK 217 



ish black, incisures, particularly those near the base, white ; thighs 

 black, anterior (fore pair) pale at base; the others with a white 

 annulus near the tip ; tibiae and tarsi white, with black incisures. 

 Length nearly 5 mm. Inhabits Indiana. 



Some Ithaca specimens, both male and female, agreeing with 

 above description may be more fully characterized as follows : The 

 entire insect has the appearance of being black, and greatly resem- 

 bles C. flavicingula Walker, differing in having white 

 haltqres and an unclouded crossvein. The thorax may be described 

 as being wholly blackish with cinereous lines between the usual 

 three black dorsal stripes; scutellum pale brownish. The narrow 

 white posterior margins of the abdominal segments are very dis- 

 tinct and sharply defined. The fore metatarsus is more than 1 J 

 times as long as its tibia. My single male specimen has lost its 

 fore tarsi. The wings are hyaline, all the veins, including the 

 crossvein, pale. Ithaca, N. Y. 



28. Chironomns calif ornicus n. sp. 



Male. Head yellowish brown, antennae with the hairs dull 

 yellowish brown, large basal joint blackish ; palpi dusky. Thorax 

 opaque, bare, cinereous with three dull grayish or blackish dorsal 

 vittae; humeri more or less yellowish; pleura and pectus gray 

 or blackish; scutellum yellowish or pale brown; metanotum dull 

 black. Abdomen linear, slender, gray haired, lusterless black, 

 apical margin of each segment pale green or yellowish ; the last 

 three segments slightly wider, depressed. The genitalia fuscous, 

 short and filiform. Wings white, the crossvein not darkened. 

 The wing surface does not appear uniformly white, but the narrow 

 space on each side of the veins is less purely white by reflected 

 light. Halteres white. Legs white; the coxae grayish; the base 

 and tip of each femur and of each tibia brownish or blackish ; the 

 tarsal joints somewhat infuscated. The middle and hind legs 

 pale haired, the fore pair only pubescent; the fore metatarsus 

 about two thirds longer than its tibia; the second tarsal joint 

 about half as long as the metatarsus, the third and fourth but 

 slightly shorter than the second. This species resembles C. 

 n i v e i p e s Zett. but differs in the coloring of the legs. Length 

 5 to 6 mm. Pasadena, California. 



29, Chironomus palliatus Coquillett 

 1902 Chironomus Coq. Proc. U. S. Nat. Mus. 25:95 



Male and female, Head, mouth parts, and first joint of antennae 

 dark brown, remainder of antennae livid, the hairs gray; thorax 



