344 . ACIPEXSERID^. 



ciety. — Back covered ■nith stellate ossifications, unequal in size, 



but subregularly arranged. 

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



stellate ossifications. 

 7/1. Stuffed, 44 feet long. Teignmouth. Purchased of the Zoological 



Society. — Back covered with stellate ossifications, subequal in 



size, and subregularly arranged. 

 n-o. Heads of large specimens : dried. Teignmouth. Purchased of 



the Zoological Society. 

 2), q. Young. England. From the Collection of the Zoological 



Society. 

 r. Stuffed, Tj feet long. — Back and abdomen covered with smoothish 



scale-like ossifications, arranged in regular oblique rows. 

 s, t, ti-iu. Young. — Skin sometimes prickly, sometimes with larger 



ossifications. 

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

 nute prickles. 

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

 2. Young. Ehine. Presented by Dr. A. Giinther. 

 n. Skeleton, 7^ feet long. 



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

 y. Skull of a very large example. 

 L Intestines of two adult examples. 



j3. American examples. 



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

 Doubleday, Esq. 



c. Fine specimen. New York. 



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



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. 



Acipeuser (Autaceus) ao-assizii, Dunieril, Nuui\ Arch. Mus. 1867, 

 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, 28-2'J on the side, and 10 along the abdomen. Skin with 

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

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



California. 



19. Acipenser acutirostris. 



Acipenser acutirostris, Ai/res, Proc. Col. Ac. Nat. Sc. 1854, p. 15 ; 

 Dnmiril, Nouv. Arch. Mus. 1867, p. 186. 



