284 BULLETIN OF THE BUREAU OP FISHERIES. 



Plate XLIV. 



Fig. I. — Cestracion iiburo, embryo 18 cm. long, showing placenta and villi. (Note remnant of yolk 

 sac at end of placenta. The parent from which this specimen was taken was 124 cm. long, taken on 

 Bird Shoal, Beaufort Harbor, August 6, 1914.) 



Fig. 2. — Cestracion tiburo, teeth of a female 89.8 cm. long, from Beaufort, N. C. 



Fig. 3. — Cestracion tiburo, teeth of a female 147.5 <^™- lo"g> from Beaufort, N. C. 



Plate XLV. 



Fig. I. — Raja eglanieria, teeth of a male 57.5 cm. long, from Cape Lookout, N. C. 



Fig. 2. — Raja stabuliforis , teeth of a male 101.6 cm. long, from Woods Hole, Mass. 



Fig. 3. — Raja stabuliforis , teeth of a female 119.4 cm. long, from Woods Hole, Mass. (Note that 

 cusps of teeth along front of jaw are entirely worn away.) 



Fig. 4. — Raja stabuliforis, teeth in back of jaw of preceding example, showing form before cusp is 

 worn away. 



Plate XLVI. 



Fig. I. — Dasybaius hastatus, teeth of a male from Beaufort, N. C. 



Fig. 2. — Dasybatus hastatus, teeth of a female 155.2 cm. long, from Beaufort (Fort Macon), N. C. 

 Fig. 3. — Dasybaius hastatus, a female 155.2 cm. long and yoimg bom at time of capture, from Beaufort 

 (Fort Macon), N. C. 



Plate XLVII. 



Fig. I. — Pteroplatea micrura, dorsal view of an adult female 50.4 cm. long, from Beatlfort, N. C. 



Fig. 2. — Pteroplatea micrura, dorsal view of young embryos taken from specimen fig. i. (Note 

 manner in which young are coiled in ovary.) 



Fig. 3. — Aetobatus narinari, dorsal view of a specimen from Beaufort, N. C, showing character- 

 istic coloration of young. 



Fig. 4. — Rhinoptera quadriloba, teeth of a male 84.8 cm. long, from Beaufort, N. C. 



Plate XLVIII. 



Fig. I. — Myliobatis freminvillii, teeth of a male 69.2 cm. long, from Cape Lookout, N. C. 



Fig. 2. — Aetobatus narinari, teeth of a male 291 cm. long, from Beaufort, N. C. 



Fig. 3. — Mobula hyposioma, teeth of a male from Cape Lookout, N. C. 



Fig. 4. — Mobula hypostotna, teeth of a female 142 cm. long, from Cape Lookout, N. C. 



Plate XLIX. 



Fig. I. — Mobula hypostotna, gill arches, back view, of a female 142 cm. long, from Cape Lookout, 

 N. C. 



Fio. 2.— Mobula hypostotna, a catch of nine, taken by Mr. Russell J. Coles (second from the right) 

 at Cape Lookout, N. C, July 10, 1913. (Photograph by Francis Harper.) 



