Miscellanies. 



203 



11. Trilohiie. 



Letter to the Editor, from Mr. Fred. Jukes, dated July 4tlj, 1S32, 17 Paradise street, 



Birmingliam, (Eng.) 



Sir — My friend Mr. Holmes, 

 on his return to America, having 

 kindly offered to convey to you 

 a parcel, and knowing the inter- 

 est you take in all branches of 

 natural history, I avail myself of 

 the opportunity, by sending you 

 some casts and a drawing of an 

 extraordinary fossil of the Trilo- 

 bite kind, which I have in my 

 possession. You may probably 

 have seen some account of it in 

 Loudon's Magazine of Natural 

 History, with remarks upon it by Mr. I. D. Sowerby, in which he 

 refers to some similar specimens discovered in your country at Tren- 

 ton Falls. The singularity of this tribe of fossils, and the circum- 

 stance of their being associated only with the most ancient strata, 

 render them so peculiarly interesting, that no opportunity should be 

 lost in making knovi'n the various species which are from time to 

 time discovered. 



This fossil was found in a low stratum of transition limestone, at 

 Great Barr in Staffordshire, and though it is more than ten miles 

 from Dudley, where the limestone is so celebrated for its beautiful 

 specimens of the " Calymene Blumenbachii," there is no doubt but 

 it is a continuation of the same formation, and in all probability this 

 fossil will some day be met vs^ith there. The other species which 

 are found at Dudley are, the "A'saphus caudatus," "Calymene 

 variolaris," and the lower portion of an unknown one, figured 53 in 

 the 4th Vol. of Loudon's Magazine. 



Remarks. — The No. of Loudon's Magazine alluded to by Mr. 

 Jukes, is missing from our collection. Supposing however that it 

 may be interesting to American readers to see a figure of this trilo- 

 bite, we republish the figure, with the letter of Mr. Jukes. The 

 casts alluded to arrived in perfect order, and are of course still more 

 striking than the drawing. We learn from Prof. Jacob Green, that 

 the genus of trilobites, to which the specimen of Mr. Jukes belongs, 

 has not yet been found in this country, — Ed. 



