I7O ENTOMOLOGICAL NEWS. [April, '15 



fresh male of Ctenucha cressonana. "It is, it is. The Cat ! !" 

 It presents a fine example of the process, long, quite slender, 

 smooth, with denser but shorter hairs along the tubes and a 

 smaller brush at the ends. 



It is not to be supposed that I have secured all the species 

 of moths that have this peculiar structure. Yet for many 

 years I have very regularly tested almost everything that has 

 come in my way. I have found, however, some peculiar fea- 

 tures in two or three butterflies. I have examined very few 

 Geometrids. Of the four species certainly known, one is a 

 Bombycid, and three are Syntomids, a family that contains an 

 immense number of species in the lands to the southward. 



It is to be hoped that some one familiar with histological 

 work can investigate further. Very fresh specimens will be 

 needed. 



The sketches made to illustrate the text are diagramatic. 



A new Nearctic Gonomyia (Tipulidae, Diptera). 



By CHARLES P. ALEXANDER, Ithaca, N. Y.* 



The crane-fly herein described as new appears to be rather 

 widely distributed in northeastern North America, but has 

 been confused with previously described forms. 



Gonomyia (Gonomyia) mathesoni sp. n. 



Color light brown, the thorax rather indistinctly striped ; femora 

 without brown bands ; wings nearly hyaline ; Sc long, extending far 

 beyond the origin of Rs; cell ist M-2 open by the atrophy of the outer 

 deflection of vein MT,; basal deflection of Cui far before the fork of 

 M. 



Male. Length, 5-5.2 mm.; wing, 6-6.1 mm. Female. Length, 6.6-6.8 

 mm. ; wing, 6.3-7 mm - 



Rostrum and palpi dark brownish black. Antennae rather short, 

 the three basal segments light yellow, the remaining segments brown- 

 ish. Front white, the vertex more yellowish, the region adjoining the 

 eyes behind more brownish. 



Pronotum pale, whitish. Mesonotal praescutum light yellowish 

 brown with indistinct darker brown stripes behind, one on either side 

 of the rather broad median area, these extending from the transverse 

 suture to the proximal ends of the pseudosutural foveae; lateral mar- 



*Contribution from the Entomological Laboratory of Cornell Uni- 

 versity. 



