SPONGILLA-FLIES — PARFIN AND GURNET 



433 



f ology and anatomy of the larva and pupa of the former species. 

 ]ie most complete account of the immature stages of a Nearctic 

 syrid is that presented by Brown (1952, pp. 130-160), who de- 

 s'ibed and figured all of the larval stages of C. areolaris. Withy- 

 :mbe (1923, pp. 519-524) has published an extensive study of the 



CURE 4. — Terminal abdominal segments 8-10 of sisyrid larvae, ventral view: A, Stsyra 

 vicaria (Walker); B, Climacia calif ornica Chandler; C, Climacia areolaris (Hagen). 



imature stages of two British species of Sisyra — chiefly fuscata 

 i'abricius) but also terminalis (Curtis) — which he did not separate, 

 id (1925, pp. 331-333) oi fuscata. Chandler (1953, p. 184) made a 

 'ief statement concerning the third-instar larva of C. californica 



