On the Permian System of Durham and Northumberland. 33 



Comatula Woodwardii. PL VII. fig. 1. 



Arms long and tapering, each ray bearing from 60 to 70 

 pinna3 on each side. The two pinnae nearest the disk have each 

 27 joints ; the third and those above it, 18. Each pinna is sepa- 

 rated by two joints. The larger filiform processes are composed 

 of 45 joints, gradually tapering, terminated by a claw which is 

 larger than the joint next to it. Two specimens from the Sound 

 of Skye, 25 to 40 fathoms, gravel and mud. I have dedicated 

 this species to my friend S. P. Woodward, Esq. 



Amphidotus ffibbosus, Agass. PI. VII. fig. 2 a, b, c. 



Amphidetus gibbosus, Agass., Catalogue Raisonne des Echinides, in the 

 Annales des Sciences Naturelles, vol. viii. p. 11. 



Test cordate, as broad as long, thickly clothed with curved 

 spines pointing towards the vent. The spines of the post-oral 

 space have slightly flattened tips. The anterior and posterior 

 lateral ambulacra meet at the lateral angles of the dorsal fasciole. 

 In each of the anterior halves of the anterior lateral ambulacra 

 there are eight very distinct pairs of pores lodged in a shallow 

 groove ; in the posterior halves of the same ambulacra there are 

 fourteen pairs in a somewhat deeper groove. The number of 

 pores in each row of the posterior ambulacra is equal, eleven in 

 each series. The odd ambulacrum is covered with fine granules ; 

 the pores are not distinct, and there is no anterior groove as in 

 A. cordatus. The anus is depressed, and the subanal impression 

 quadrate, enclosing two pores on each side. The mouth is large, 

 and placed one-third of the length of the test from the margin. 

 The single specimen above described was dredged in 25 fathoms 

 on the south side of Bressa Island, Zetland, on a coarse sandy 

 bottom. It is with some hesitation that we refer this species to 

 the A. ffibbosus of Agass., the original description being very 

 short and imperfect. 



EXPLANATION OF PLATE VIL 



Fig. \. Comatula Woodwardii, nobis, nat. size. 



Fig. 2 a, h, c. Amphidotus gibbosus, Agass., nat. size. 



IV. — Notes on the Permian System of the Counties of Durham 

 and Northumberland. By Richard Howse, South Shields. 



[With a Plate.] 



Since I had the pleasure in 1848 of drawing up a Catalogue of 

 the fossils of the Permian System, collected by myself in the 

 counties of Durham and Northumberland, at the request and 

 Ann. ^' Mug. N. Hist. Ser. 2. Vol. xix. 3 



