618 



NEUROPTEliA. 



aiice in Labrador. Thouoli we have not reared the imaao wc 

 suppose it to be the Limnophilus subjyunctulatus of Zetterstedt, 

 the most abundant species we met in Labrador. The case 

 is straight, cylindrical, and built of coarse gravel, and the 

 larva is a thick, cylindrical, whitish worm. Fig. GOO repre- 

 sents the case of L. Jlavicornis Fabr,, a European species, 

 which is often constructed of small shells. Fig. 

 GIO illustrates the case of the European L.pellu- 

 cidas Olivier, which is formed of large pieces of 

 Fig. Oil. leaves laid flat over each other. 

 In Sericostoma the ocelli are wanting, and the palpi arc 

 pilose, the maxillaiy palpi of the males are four-jointed, cover- 

 ing the face like a mask. S. Americanum Walker is black 

 with black hairs ; the antennae are twice the length of the 

 body, while the anterior wings are much longer than the hind 

 ones. Fig. Gil represents the tube of a European species of 

 this genus. 



In HeUcopsyche the spurs are arranged thus : 2, 2, 4, and 

 the maxillary pnlpi of the males mask the face, being recurved . 

 We have found the larxtt of Helicopsydie glabra Ilageu (Fig. 



lj:M 



Fiff. G12. 



G12, X, lunate patch on the basal abdominal ring; a, front 

 view of the head, enlarged ; »t, mandible ; e, e\Q ; 6, vertical 

 view of the end of the abdomen, enlarged), about changing 

 to pupae, the middle of July, in Wenham Lake. Mass. One 

 had spun its operculum and lay with its head just behind 



