AQUATIC INSECTS IX NEW YORK STATE 395 



and have a spiue outwardly. The cuticular appendages have an 

 unusual form, as has the labrum. The anterior part of the head 

 is spiny. The armature of the end of the abdomen is peculiar. 

 The posterior rudimentary appendages are of a different form, 

 iind the claws are replaced by club-shaped bodies. A curious 

 appendage below is indicated in the name. The pupa has an 

 extraordinarily elongate abdomen which terminates in two 

 paddle-shaped appendages, loosely ciliate outwardly. From 

 I-ake of the Isles near Minneapolis ^Nlinn. Hcrrick [loc. clt.] 



Corethra plumicornis Fabricius 



Plate 39 



Ent. Syst. 1794. 4:246-58 



The following synonymy Ls according to Schiuer, Fauna Aiis- 



tiiaca, 1864. 2:024. 



177G c r i s t a 1 1 i n a Degeer (Tipula), Ins. 6:149, 20 

 1787 pilicornis Fabrichis (Tipula), Mantissa Ins. 2:325-49 

 1788-9;? h a f n i e n s i s Gmelin (Tipula), Syst. Natur. 2826, loS 

 1794 p 1 11 111 1 (• t> 1- 11 i s Fabricius, Ent. Syst. 4:246-58 

 1809 (Vi lateralis Panzer. Fauna (tcr. 109:16 

 1818 p 1 11 11) i e () r n i s Fabricius. Meiyeu, Syst. Besebr. 1:15. 1 

 1864 p 1 u lu i c u r n i s Fabricius. Scliiner. Fauna Austriaca. 2:624 

 <!-■»? il^^i-Um a.- 



C. plumicornis, yar. americana 



Male. Eeddish brown; abdomen yellowish; the antennal joints 

 Ttllow with brown tijis, basal joint brown; the hairs pale brown; 

 the front, the upper surface of the proboscis, and the palpal 

 joints brown; the incisures of the latter yellow, the yertex, the 

 cheeks and the underside of the proboscis and neck pale yellow; 

 thorax pale brown aboye with three dark reddish brown stripes, 

 the middle one diyided by a fine, pale brown line; the lateral 

 stripes abbreyiated anteriorly, the median one posteriorly; the 

 pectus and the margins of the pleural and jugular sclerites red- 

 dish brown; scutellum pale brown, metathorax dark brown; 

 abdominal segments subequal in length excejit the first and 

 last. W'hich are less than one half of the others. The dorsal 

 surface is brown with pale yellow incisures. The brown col- 

 oring is darkest anteriorly, gradually becoming paler caudad, 

 so that the posterior margin of the segment is almost as light 

 in color as the incisure. This is i>articularly true with segments 

 o. 4 and 5. On segment 6, 7 and 8 the brown color is almost 

 wanting excepting a triangular lateral spot which is ]U'olonged 

 caudad in a fine line. The outline of this spot, howeyer. is not 

 distinct, but is blended in with the color of the dorsum. A }>air of 

 very small pale yellow spots with a narrow brown border are more 



