154 



PSTCHE. 



[October 1S91. 



abundant, crawling over the water 

 plants in the brook. They 

 can sometimes be seen under 

 the ice in a submerged 

 meadow. The cases (fig. 2) 

 are made of little sticks and 

 other vegetable bits, put 

 on transversely, and those of 

 the growing larva have a 

 appearance, probably similar to those 

 Isaac Walton calls " Ruff-coats," but 

 the case of the pupa is a smooth cylinder. 

 At this time it is about 15 mm. long, 

 and is closed with a net at each end, as 

 is also the case o&" Neuronia styglpes. 

 These nets or disks which close the 

 apertures, are indicated on some of the 

 cuts. The larvae frequent rather quiet 

 water, and therefore are comparatively 

 easy to keep alive in an aquarium, but 

 all species need especial care during 

 pupation, which is the critical period 

 of a caddis-worm's life. I have found 

 them pupating in the brook at the end 

 ■ of May. 



A larva, which is probably 

 that of Limnophilus pud/cus, 

 makes a slightly curved case 

 (fig. 3) of little, rounded, im- 

 bricating bits of leaves. It is 

 not very common, and I have 

 never reared it. 



The larvae of Anabolia 

 sordida are nearly as abun- 

 dant as those of Halleszis 

 maculipennis ; their cases 

 (fig. 4) are composed of bits 

 of bark and little sticks, 

 to which are sometimes added 

 Kig--4- fragments of moss, a little 



Fig- 3- 



sand or gravel or a few shells. I have 

 never found a case of any species com- 

 posed entirely of shells. When sticks are 

 used they are put on longitudinally, and 

 usually project beyond the ends of the 

 cylinder. During pupation each end is 

 closed with a net or grating. I have 

 found a larva pupating at the end of 

 May and also in June. The adult 

 case is about 24 mm. long. 



I have found larvae similar to those 

 of Anabolia, in cases made entirely of 

 pieces of sedge leaves, arranged length- 

 wise with long projecting ends, but 

 though I once reared the imago, which 

 also resembles that of Anabolia, I have 

 not succeeded in obtaining its 

 name. 



Another case of about the 

 same size (fig. 5), w T ith an 

 imago resembling that of Ana- 

 bolia, appears to be rare. It 

 is made entirely of leaves, and 

 in cross section is three angled, \_/ 

 with projecting corners. This V 

 larva also is not unlike that of lg ' s ' 

 Anabolia. 



A similar larva makes a 

 case (fig. 6) of bark and 

 sticks, about 20 mm. long but 

 slightly flattened, with a little 

 stick at each side, and imbri- 

 cating bits of leaves between. 

 I sometimes find in the brook 

 the larva of a species of Steno- 

 phylax. The case (fig. 7) is 

 cylindrical, about 22 mm.long, 

 and is made entirely of gravel. 

 During pupation it is closed 

 with a net at each end. F'g-7- 



