930 



REPOKT OF COMMISSIONER OF FISH AND FISHERIES. 



[52] 



EXPLANATION OF PLATE HI. 



Fig. 2. — Spieosperma ferox. 



Fig. 2 h. — The efferent duct, atrium, prostata, penis, and oviduct. 



2 i. — One of the spiral spermatophores, surrounded by a pellucid sack. 



2 k. — A part of the same spermatophore, more highly magnitied. 



2 I. — A fascicle of spines from the upper side of the body. 



2m. — One of the fan-like spines from the above fascicle, highly magnified. 



2 n. — The free end of a 3-forked spine. 



2 M.* — Free end of another spine with 4 prongs. 



2 o. — One of the biforked spines, highly magnified. 



2 p. — Another spine with 4 prongs. The spines with more than 2 prongs are frot 



the cephalic segments. 

 2 q. — The cephalic ganglion, seen from above. 



