PLATE XVII. 



Fig. 1. — GrlUufi nulis Topsent, p. 45. 



Fig. la. — Section of game ( X 5). 



Fig, 2. — Gellins fimhriatns Kirkp., nat. size, p. -lO. 



Fig. 2a. — Section of same ( X 5). 



Fig. 3. — Gellius pilosus Kirkp., nat. size, p. i7. 



Fig. 3a. — Section (x ii). 



Fig. 4. — Gellius fflacialifi var. ntvca llidley and Dendy, nafc. size, p. 49. 



Fig. 6. — Gellius cucurhitiformis Kirkp., nat. size, p. is. 



Fig. oa. — Another specimen of same, nat. size. 



Fig. 6b.— Surface (X Gn). 



Fig. oc— Section (x C5). 



Fif;. 6. — Sigmaxinyssaphahellioiihs Kirkp., uat. size, p. -'.'>. 



