218 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL. 14 



PLATE 10 



Fig. 1. C happeria patula {Hincks). 



Fig. 2. The same, showing details of the skeleton. 



Fig. 3. Chapperia condylata Canu and Bassler, showing avicularia in 

 the presence and absence of ovicell. 



Fig. 4. Chapperia frontalis new species. Branching spines fuse to form 

 a shield above the opesia. 



Fig. 5. Chapperia calif ornica new species. Note elongated opesia and 

 form and decoration of ovicell. 



Fig. 6. Chapperia longispina new species. Two forms of avicularia in 

 presence or absence of ovicell. 



Fig. 7. The same, showing the distal side of the ovicell with its 

 peculiar avicularium. 



Fig. 8. Tremogasterina granulata var. subspatulata new var. 



Fig. 9. Exechonella aniillea (Oshurn). 



Fig. 10. The same, dorsal side showing the attachment processes. 



