PIIKYGANEID^E. 



G17 



typus armatns) 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. (Ger- 

 staecker.) 



In Neuronia and Phryganea the maxillary 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 

 five-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. Neu- 

 ronia semifasciata Say is fulvous, with 

 the fore wings transversely necked with 

 brownish-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. 606 Fig. 606. 

 represents the case of the European Phryganea grandis Linn. 

 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 (i.e., 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 

 truncated. L. perpusillus 

 Walker is a boreal species, oc- 

 curring at Hudson's Bay. Limnophilus rhom- 

 Mcus Linn. (Fig. 607, case made of bits of moss) Fig ' 610 ' 

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

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



Fig. <>09. 



Fig. 608. 



