340 Bibliographical Notices. 



" still water '^ of the river Tees is tenanted by a form of Bucci- 

 num. undatum as light and thin as most of the specimens I pro- 

 cure from the depths of the Coral zone. 



The most obvious difference between the Tees shell and pela- 

 gicum consists in this, that in the latter the spire is " very long " 

 in consequence of the whorls slowly increasing in diameter ; while 

 it is remarkably short in the former, owing to the rapid augmen- 

 tation of the whorls. It is singular, while Buccinum undatum 

 decreases in tumidness in proportion as its depth of habitat in- 

 creases, that the two species, Fusus antiquus and F. islandicus, 

 should, on the contrary, become more and more ventricose. 



It affords me much pleasure, before concluding the present 

 notes, to mention, that I have lately procured a young specimen of 

 Buccinum ovumj Turton (vide Zoological Journal, vol. ii. p. 366. pi. 

 13. fig. 9). It was brought up by the fishing lines off the coast of 

 Northumberland, from soft ground, in the Coral zone. The spe- 

 cimen is half an inch long, and has four whorls, the first two of 

 which have a truncated form : the shell is white, faintly spirally 

 striated and covered with a greenish epidermis. Considering the 

 numerous varieties existing of Buccinum undatum, it would not 

 surprise me, if the crag fossil B. Dalei, Sowerby, should prove 

 to be the same species : the principal difference between them 

 seems to be in the latter being more strongly spirally striated. 

 Mr. Morris, however, informs me, that the striation of B. Dalei 

 is a variable character, which is proved by some unpublished 

 figures of this species that he has kindly favoured me with. An 

 examination of more specimens, than I possess, of both forms is 

 necessary, however, before deciding as to their specific identity. 

 Probably, the ordinary specimens of B. Dalei lived in the Coral- 

 line zone, which will account for their being thicker than those 

 of B. ovum, judging of my specimen, and the one figured by Dr. 

 Turton. In both forms, the termination of the left side of the 

 canal is slightly tongue-shaped. 



BIBLIOGRAPHICAL NOTICES. 



Outlines of Structural and Physiological Botany. By Arthur Henfret, 

 F.L.S. &c. 12mo. Van Voorst, 1847. Pp. 245, 18 plates. 



Much has been done of late years in this country to aid students in 

 the prosecution of botany. The valuable Introductions of Lindley 

 and Gray are now in the hands of all, and when combined with 

 Babington's excellent * Manual ' they form a complete text-book for 

 the British botanist. Nevertheless we hail the appearance of Mr. 

 Henfrey's worH as one which has been ably executed, and in a 

 manner somewhat different from that adopted by the other authors 



