PHRYGANEID.E. 



G17 



Kiir. ml 



typus armatus) attacks the fully grown larva of a Phryganea 

 (Aspatherium), which inhabits a smooth cylindrical case, 

 which the Ichneumon converts into a pupa case by spinning 

 a long broad band of silk around the anterior opening, ((ier- 

 staecker.) 



In Nettronia and PJ/ri/</<iiica the maxillaiy palpi differ in the 

 two sexes, and there are two spurs on each of the fore legs, 

 and four on the middle and hind legs. The maxil- 

 lary palpi in the males are four-jointed, in the females 

 live-jointed, and there are three ocelli. Neuronia 

 differs from Phryganea in having its 

 antennae a little shorter than the wings, 

 whereas in the latter they are longer, 

 and "the fore wings are hairy. Nvu- 

 roida semifasciata Say is fnlA T ous, with 

 the fore wings transA'ersely flecked with 

 lirownish-blacK, a small basal spot, and an abrupt, 

 median streak at the hinder margin of the wing, while 

 the disk has two yellowish spots, and there is a short 

 fuscous subapical band on the hind wings. Fig. 6<i(i 

 represents the case of the European PJtr>/(/aiic<i 



In the group Limnophilides the maxillary palpi of the males 

 are three, those of the fe- 

 males five-jointed ; ocelli 

 three ; anterior wings rather 

 narrow, the apex obliquely 

 truncated or rounded. In 

 Limnophilus the tibial spurs of the three pairs 

 of legs are arranged thus, 1. 3. 4 (/. r., one 

 spur on the front pair of tibiae ; 

 three on the middle, and four 

 on the hinder pair), and the 

 apex of the anterior wings is 

 t r u neat e d . L. perpusillus 

 Walker is a boreal species, oc- 

 curring at Hudson's Bay. Limnophilus rhom- 

 \tfi->iit Linn. (Fig. 607, case made of bits of moss) 

 is an ochreous species, Avith luteous hairs. Fig. 608, a, case, 

 represents a case-worm which we have found in great abund- 



Fig. GOG. 

 Linn. 



Fig. tins. 



