11. LEIOPTILUS. 21 



23. PhosphoreUa pulchella. B.M. 



Pinnules 20, broad, oblong, membranaceous ; polype-cells united. 



Pennatula pulchella, Valeric. Mus. Paris ; Ilerklots, Not. p, 16, 1. 1. f. 2 ; 

 Gh-ay, Aim. ^ Mag. Nat Hist. 1860, v. p. 22. 



Hah. North Cape ; Shetland (LaugJtrin) ; Polperro {GovaHi) ; Me- 

 diterranean ? 



10. PTILELLA. 



Pinnules membranaceous, broad, rounded, fringed with three close 

 parallel series of short polype-cells on the edge. Eachis granular 

 on each side behind, without any spines. 



24. Ptilella borealis. 



Pinnules broad, rounded, membranaceous, with throe ranges of 

 very close parallel cells. 



Pennatula borealis, Sars, Fauna Litt. Norv. 1. p. 17, t. 2 ; Milne-Edw, 

 8f Haiine, Corall. i. p. 210; Ilerklots, Not. p. 17; Gray, Ann. 8;' Mag. 

 Nat. Hist. 1860, V. p. 22. 



Hah. North Sea. 



11. LEIOPTILUS. 



Pen ovate. Pinnules elongate, angular, fleshy, slightly grooved, 

 without any elongated radiating spines. Cells crowded in a double 

 row on the pinnules. Kachis granular behind. 



Leioptilus, Grat/, Ann. 8f Mag. Nat. Hist. 1800, v. p. 22; VerriU, 

 Proc. Essex Inst. iv. 1865, p. 182. 



" This genus is most nearly allied to Pennatula, but differs in having 

 soft, fleshy pinnae, with even borders, and no apparent spicula. The 

 polypes are in 2 or more rows along the edges of the pinnae. The 

 peduncle is enlarged into a conspicuous contractile bulb. The axis 

 is very slender, quadrangular, and extends only through the middle 

 portion of the body. The rudimentary individuals on the back are 

 developed in the form of conspicuous papillae." — VerriU, I. c. 



25. Leioptilus fimbriatus. 



Eachis very short. 



Pennatula fimbriata, Herklots, Not. p. 18, t. 3. f. 3, t. 4. f. 1 ; Gray, 

 ■ Ann. 8,- Mag. Nat. Hist. 1860, v. 22. 



Hah. Japan (Mus. Leyden). 



26. Leioptilus undulatus. 



Leioptilum undulatum, VerriU, Proc. Essex Inst. iv. 1865, p. 182. 

 Basal portion smooth, pointed at the end, swelling into a large 

 bidb just below the pinnae ; posterior part of the body, except along 

 a narrow median band, covered with large vermiform rudimentary 

 polypes, forming rounded papillae, some of which are one-tenth of an 

 inch in diameter. Pinnae large, very broad and rounded, with nar- 

 row bases, the edges thrown into undulations or frills. Polypes 



