242 SECOND REPORT OF THE STATE ENTOMOLOGIST. 



conspicuous glossy yellowish-white spot ; inner spot with a strong notch 

 on its posterior side which is formed by a yellowish-white dot, and a 

 similar dot is placed on the inner side of this spot ; outer spot with an 

 oblique yellowish-white band on its outer side, beyond which at the tip 

 of the wing, is a slight blackish transverse spot. Under a magnifier, 

 these spots are found to be produced by the colors of the scales upon the 

 nerves of the wings, which scales are regularly and beautifully dyed with 

 black and yellowish-white, as follows: the posterior or anal nerve has 

 black scales the last half of its entire length, and also at its base ; the 

 next or interno-medial nerve, which forks in its middle, is clothed through- 

 out with black scales, including both its branches; the next or externo- 

 medial has black scales on the basal fourth of its length, two broad annuli 

 of black scales on its middle, another annulus at its fork, and a fifth ser- 

 ies at the tips of each of its branches; the next is clothed with black 

 scales through its entire length ; the next is black where it first becomes 

 plainly visible in the middle of the wing, again for a short distance after the 

 origin of the preceding nerve, again for a considerable space of its fork, and 

 again at the apex of its posterior branch onl)^ the costal and the marginal 

 nerves have black scales from their bases ; these become much more 

 dense at the black spots of the anterior margin, and are replaced by yel- 

 lowish scales only between these spots and beyond the entire one. Legs 

 black; femurs pale toward their bases; tips of femurs and of tibiae 

 whitish. Coxae pale. 



The Winter Musketoe is met with in the last days of autumn and again 

 for a short time in the first days of spring, and specimens are occasionally 

 found in any of the winter months. It is a somewhat rare insect, which 

 no one can fail to distinguish clearly by the marks on its wings as above 

 described. 



6. Chironomus nivoriundus. The Snoiu-born Midge. 



Black ; poisers obscure-brown ; wings pellucid-cinereous, their anterior 

 nervures blackish. 



Length about 0.15 to the tip of the abdomen in the males ; females a 

 third shorter. 



This species is black throughout, and clothed with fine black hairs. 

 The thorax has three slightly elevated longitudinal ridges immediately 

 forward of the scutel. The wings, when the insect is at rest, are held 

 against the sides of the abdomen, often vertically in the males, but more 

 commonly in the females with their inner margins in contact, thus form- 

 ing a steep roof covering the back. They are diaphanous, of a cinereous 

 tinge, and feebly iridescent. Their inner margins toward their bases are 

 slightly arcuated. The submarginal or postcostal nervures, those which 

 bound the closed basillary cell, and which proceed from this cell to the 

 margin, are particularly obvious, being of a blackish color, excepting 

 the nerve which proceeds from the inner angle of this cell to the apex of 

 the wing, which, with the nervures inside of it, scarcely differ in color 



