13. I'TKROMORPHA, 23 



30. Argentella Putmanni. 



Coral small and delicate ; the pinnate portion broad, oval in out- 

 line. Peduncle a little more than haK the whole length, smooth 

 and slender-pointed. Pinnae broad. 

 Pteroeides Putmanni, VerriU. 



Hah. California (?). 



13. PTEROMORPHA. 



Pen elongate, slender. Pinnules (20 to 28) elongate, supported 

 by spicules arranged parallel with the hinder edges. Polypes on 

 the two sides of the edges of the pinnules. 

 Pteromorpha, Herklots, Not. p. 18. 



31. Pteromorpha Dringii. B.M. 



Feather oblong, elongate. Pinnules rather elongate, rather longer 

 than the breadth of the base, subtrigonal, only attached by half the 

 lower edge. Stem elongate, as long as the feather, tapering at the 

 base. 



Hah, Swan River {Mr. Bring). 



This dark-coloured fresh specimen shows a dark granular base at 

 the pinnules, as is represented in Herklots's figure of Pteromorpha 

 crispa (t. 5). 



In the bleached specimens from Haslar Hospital this character is 

 no longer to be seen. 



32. Pteromorpha grisea. B.M. 



Stem one-third the length of feather. 



Penna grisea, Bohadsch, An. Mar. p. 109, t. 9. f. 1, 3 ; Pallas, Zooph. 



p. 367. n. 214 ; Dana, Zooph. p. 596. 

 Pennatula spinosa, Ellis, Phil. Trans, liii. p. 434, t. 20. f. 0, 7. 

 Pteromorpha crispa, Herklots, Not. p. 19, t. 5. 

 Pteroeides gi'isea, Oray, Ann. 8f Mag. Nat. Hist. 1860, v. p. 22. 

 Pennatula grisea (spicules), Quekett, Lectures Hist. ii. p. 133, f. 69 n, 



c, D, E, (axis) F, 



Hah. ? Old CoUection. 



33. Pteromorpha expansa. 



Pteromorpha expansa, VerriU, Proc. Essex Inst. iv. 1865, p. 181, t. 5. 

 f. 1 (animal). 



The pinnate portion is broad, ovate, and abruptly rounded below. 

 PeduncL? or basal portion thick, swollen, a little less than half the 

 entire length. Pinna? crowded, about 32 on each side, long and wide, 

 somewhat thickened, angular ; the naked hinder margin somewhat 

 concave, the anterior rounded and supporting numerous small polypes 

 and strengthened with sharp spines, which are often in clusters of 



