MONOGEAPH OF JAPANESE OPHIUKOIDEA. 



189 



Til summer, the larger individuals contain several embryos. I 

 have once dissected out six embryos from a single adult. Animals 

 containing full grown embryos appear to give birth to them the 

 night after they are placed in an aquarium. 



Amphipholis sobrhia, sp. nov. 



Numerous specimens ; Mera-out-Oisegaké, Sagami 8ea ; 300 

 fathoms. Five specimens ; Sengendzuka-Aoyamadashi, Sagami Sea ; 

 85 fathoms. Three specimens ; oft' Oshima, Sagami Sea ; 75-85 

 fathoms. 



Diameter of disk 3 mm. Length of arms 10 mm. Width of 

 arms at base 0.6 mm. 



Disk subpentagonal, covered with imbricating scales, which 

 are rather fine, thickened along 

 the free margins, concave, very 

 distinct fi'om one another and 

 coarser inwards than outwards. 

 Six primaries rather distinct, 

 larger than the other scales, 

 separated from one another. 

 Radial shields large, pear- seed 

 shaped, shghtly shorter than 

 half the disk radius, about twice 

 as long as wide, completely 

 joined in pairs, except at the 

 very inner ends, where they 

 are separated from each other 

 by a triangular, wedge-shaped 

 scale ; the united width of each 



Fig. SO. AmpldphoUs sohrina. x 20. a. From 

 above, h. From below, c. Later.-il view of 

 three arm joints near disk. 



