326 Mr, J. W. Salter on some neiv Palceozoic Star-fishes. 



2. P. obtusus, Forbes. 



Uraster obtusus, Mem. Geol. Surv. Decade 1. pi. 1. f. 3, 1849. 



P. uncialis, depresso-convexus, brachiis subconicis, disco bre\'ioribus ; 

 infra assulis oblongis majoribus punctatis (" pagiua superiori reti- 

 culato-spinosa," Forbes). 



Better specimens than those Forbes had, show the ambulaci-a 

 pierced for two rows of suckers only. The under side was 

 closely plated-over by the large adambulacral bones, which are 

 closely punctate. The shape was clumsy, with thick, short arms, 

 very like the form of some recent Asterinse. 



Loc. This rarity should be sought for in the fossiliferous 

 slates of Drumcannon parish, VVaterford; also in the ash-bed 

 west of Bala Lake, N. Wales, where it was first found by Prof. 

 Sedgwick and myself, and mentioned under the name Asterias 

 primccva, in the Quart. Geol. Journal, 1845, vol. i. p. 20. It 

 would have been better to have kept this name, if Forbes had 

 not appended it to the Kendal species. 



3. P. coronella, n. sp. 



P. parvulus, 6-coronatus ; brachiis brevibus acutis cariuatis, tuber- 

 culato-spinosis ; pagina inferiori ? 



A small species, with four rows of tubercles on each arm, and 

 a close corona of six tubercles. 



Loc. Gunwick Mill, Malvern (in the May Hill sandstone). 

 Mus. Pract. Geology. 



4. P, Ruthveni, Forbes, I. c. Decade 1. pi. 1. f. 



P. 2-3-uncialis disco fere nuUo, brachiis teretibus longis subcarinatis ; 

 assulis [ad]ambulacralibus linearibus longis geniculatis. 



It will not be difficult to distinguish from P. asjjerrimus ; the 

 arms are longer, slenderer, and pointed, and the disk is if pos- 

 sible smaller. Forbes's diagnosis (abbreviated) is given above. 



Loc. Ludlow rocks, Westmoreland (Woodw. Mus.). 



5. P. hirudo, Forbes, I.e. Dec. 1. pi. 1. f. 4. * 



It appears to belong to this genus, but is very imperfect; 

 the lanceolate arms will easily distinguish it. 



Loc. Very abundant at Pottersfell, Kendal ; in Ludlow rocks. 



6. There is a fine Palceaster in the Lower Carboniferous rocks 

 near Barnstaple, N. Devon. 



