234 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL. 14 



PLATE 18 



Fig. 1. Scrupocellaria mexicana new species. 



Fig. 2. The same, ovicells. 



Fig. 3. Scrupocellaria regularis Osburn. 



Fig. 4. The same, ovicells. 



Fig. 5. Scrupocellaria scabra {van Beneden). 



Fig. 6. Scrupocellaria scabra var. paenulata Norman, greatly ex- 

 panded scutum. 



Fig. 7. Scrupocellaria obtecta Haswell. 



Fig. 8. Scrupocellaria bertlioleiti var. tenuirostris new var., showing 

 more complete scutum and elongate median avicularium. 



Fig. 9. Scrupocellaria harmeri Osburn, frontal view of zooecium with 

 spines and lateral avicularium. 



Fig. 10. The same, ovicell and scutum. 



Fig. 11. Scrupocellaria ferox Busk, broad transverse giant avicularium 

 and absence of scutum. 



