Mayer. — Staurocephalus gregaricus. 
Fig 10. 
Fig. 11. 
Fig. 12. 
Fig. 13. 
Fig. 14. 
Fig. 15. 
Fig. 16. 
Figs. 17. 
PLATE 2. 
Dorsal view of Staurocephalus gregaricus, nov. sp., magnified 2 diameters. 
Showing the sexual segments contracted after the ie of the 
genital products. 
Dorsal view of head, showing mouth opening. Magnified. 
Ventral view of head. Magnified. 
Side view of parapodium of the 40th segment from the head of the worm. 
(np) nephropore. 
Larva one day old. Showing the green-colored gland cells between 
the eyes. 
Larva 34 days old. (gl) head glands. 
Larva 54 days old. 
(a) and (4) sete of a larva 5} days old. 
