348 bulletin: museum of comparative zoology. 



Although this species agrees fairly well with the North American 

 species in most generic characters, it will doubtless form a new genus 

 when other Chilean Limnephilidae are known. 



Magellomyia, gen. nov. 



Last joint of hind tarsus without spines beneath; spurs 1, 2, 3. Distinct 

 ocellar macrochaetae; male palpi only moderately long. Wing membrane 

 not granulate; venation about normal, but third fork in both wings is pedicel- 

 late, fourth apical cell in both wings about as broad as third at base; discal 

 cells very long in both wings, and in hind pair reaching much before the fork 

 of the median; first fork of fore wings not extending back of the anastomosis; 

 radius not bent at stigma. 



Type. — M. moesta, sp. nov. 



In my table (Can. ent., 1916, 48, p. 121) it would run to 29, then, 

 out on account of spur formula, would not agree with either alterna- 

 tive. From Hylepsyche it differs in normally divided anal cell, and 

 from most of the other genera in having ocellar macrochaetae, and 

 the nongranulate membrane.' 



Magellomyia moesta, sp. nov. 



Type.— M. C. Z. 10,867. Strait of Magellan: near the Hassler 

 Glacier, on detritus 1,200 ft. high, 24 May 1872. 



Black, with mostly black bristles, but some on vertex and pronotum are 

 yellowish; palpi pale, antennae brownish, slightly crenulate below; ocellar 

 macrochaetae almost between the ocelli; legs pale, but much of femora, and 

 the»tips of other joints darkened, tarsus I with basal joint much longer than 

 second, front tibiae with a few fairly long spines, but none near the base. 

 Abdomen rather larger near tip than elsewhere. Fore wings moderately 

 narrow, outer margin almost oblique; pale brownish, nearly uniform, a few 

 whitish spots, not distinct, except one on the thyridium. In hind wings the 

 first fork is almost pedicellate, and the third fork has a pedicel as long as itself. 



Expanse 15 mm. 



SERICOSTOMATIDAE. 



Helicopsyche mulleri, sp. nov. 



Type.— M. C. Z. 10,906. Brazil: Santa Catharina (F. Miiller, 



18). 



Dark; head in front mostly pale, clothed with long pale hair, basal joints of 

 antennae pale and with pale hair, also on the posterior warts; antennae pale 



