344 ACIPEXSERIDJE. 



cicty. — Back covered with stellate ossifications, unequal in size, 



but subregularly arranged. 

 /. Stuffed, 5 feet long. Thames. — Back covered with very irregular 



stellate ossifications, 

 m. Stuffed, 4| feet long. Teignmouth. Purchased of the Zoological 



Society. — Back covered w'ith stellate ossifications, subcqual in 



size, and subregularly arranged. 

 71-0. Heads of large specimens : dricf'' . Teignmouth. Purchased of 



the Zoological Society. 

 p, q. Young. England. From the Collection of the Zoological 



Society. 

 T. Stuffed, 71 feet long. — Back and abdomen covered with smoothish 



scale-like ossifications, arranged in regular oblique rows. 

 s, t, u-w. Young. — Skin sometimes prickly, sometimes with larger 



ossifications. 

 X. Stuffed, 17 inches long. English coast. — Skin with simple mi- 

 nute pricldes. 

 y. Youug : skin. Holland. From Gronow's Collection. 

 z. Young, llhine. Presented by Dr. A. Giinthcr. 

 n. Skeleton, 7-|-feet long. 



/3. Skeleton, 5 feet long. Purchased of the Zoological Society. 

 y. Skull of a very large example. 

 i. Intestines of two adult examples. 



j8. American examples. 



a-b. Stuffed, 3 and 1 feet long. North America. Presented by E. 

 Doublcday, Esq. 



c. Fine specimen. New York. 



d. Twenty inches long. From the Collection of Dr. van Lidth do 



Jeude. 



I am unable to say whether the specimen named last is really 

 North-American, as, indeed, it is impossible to refer every example 

 of which the origin is not known, to the European or North-American 

 form. The latter appears to have generally the stellate ossifications 

 somewhat rougher than the European form. 



18. Acipenser agassizii. 



Acipenser (Antaceus) agassizii, Dumeril, Noun. Arch, Mus. 18G7, 

 p. 181, pi. 11. fig. 2 

 Snout produced, the eye occupying the middle of the length of the 

 head ; barbels short, simple. Osseous shields well developed, 9 on 

 the back, 28-29 on the side, and 10 along the al)domen. Skin with 

 numerous stellate ossifications and small scutella). A part of the 

 anal fin below the dorsal. D. 41. (iMim.) 

 California. 



19. Acipenser acutirostris. 



Acipenser acutirostris, Ayrcs, Proc. Cal. Ac. Nat. Sc. 1854, p. 10 ; 

 Dum6ril, Nouv. Arch. Mus. 1867, p. 180. 



