228 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL. 14 



PLATE 15 

 Fig. 1. A mastiff ia biseriata new species. 



Fig. 2. The same, dorsal view, showing the peculiar median avicu- 

 larium and short dorsal ones. 



Fig. 3. The same, ovicell. 



Fig. 4. Caberea boryi (Audouin), showing scutum, normal frontal 

 avicularia and ovicell. 



Fig. 5. The same, dorsal view of the vibracular chambers. 



Fig. 6. The same, giant avicularium. 



Fig. 7. Scrupocellaria bertholetii (Audouin). 



Fig. 8. The same, showing giant avicularium. 



Fig. 9. Scrupocellaria diegensis Robertson, ovicell, scutum and avicu- 

 larium. 



