58 LEPIDOSTOMA HIRTUM 



grating, which differs in form from that of 

 Sericostoma and Notidobia, but is closely akin 

 in the nature of the material used and the 

 general plan of the perforated plate (Fig 29). 



Family . . SERICOSTOMATID^E 

 Genus . . Lepidostoma 

 Species . . hirtum 

 Spurs, 2.4.4. 



Sometimes mistaken for the grannom is the 

 allied insect Lepidostoma hirtum. The caddis 

 case is also quadrilateral and made of vege- 



FiG. 30. Genitalia of Lepidostoma hirtum, <J , 

 from above. 



table matter. The shape is, however, much more 

 decided, and the case is longer and more taper- 

 ing. The female also carries a bunch of green 



