558 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. xxxiv. 



Zooids. — Ventral zooicls forming short rows leading inward and 

 downward from the bases of the leaves. There is a more conspicu- 

 ous row of five or six zooids on the rachis just back of the base of 

 each leaf. Each zooid is surrounded by a circlet of perpendicularly 

 placed spicules. Ova are seen near the bases of the leaves in the 

 downward continuations of the polyp cavities. 



Color. — Bright scarlet. Polyps white (perhaps yellow in life). 



Type.— Cat. No. 22597, U.S.N.M., Albatross Station 411G, between 

 Oahu and Molokai, 241-282 fathoms. 



Distribution. — South coast of Oahu: Station 3907, 304-315 fath- 

 oms; Station 3908, 304-308 fathoms (Cat. No. 25414) ; Station 3910, 

 311-337 fathoms (Cat. No. 25329, U.S.N.M.) ; Station 3917, 295-330 

 fathoms (Cat. No. 22582, U.S.N.M.) ; Station 3919, 220-257 fathoms 

 (Cat. No. 22599, U.S.N.M.). 



Between Oahu and Molokai: Station 41-14, 154-195 fathom^; Sta- 

 tion 4116, 241-282 fathoms (Cat. No. -22597, U.S.N.M.) ; Station 

 4117, 253-283 fathoms (Cat. No. 22600, U.S.N.M.). 



One of the prettiest and most abundant pennatulids in the col- 

 lection. 



PENNATULA FLAVA, new species. 



Plate XLI, figs. 5 and 6. 



Length of a large specimen 200 mm. Stem, to first leaf with normal 

 polyps, 100 mm. The stem has a small basal bulb and an elongated 

 swollen portion commencing about 25 mm. above the proximal end, 

 and gradually diminishing until the ordinary caliber is attained be- 

 low the first leaves ; varying, however, considerably in different speci- 

 mens. Leaves not so closely approximated as is usual in the genus, 

 those with normal polyps being about twenty-five in number on 

 each side ; the larger ones being 20 mm. long by 3^ mm. broad. They 

 are an elongated triangle in shape. 



Polyps six to nine in number, decreasing toward proximal leaves, 

 the last having but a single polyp. Calyces cylindrical, in a single 

 row, directed toward the distal ends of the leaves, increasing in length 

 from the proximal to the distal end of the leaf; average length of 

 longest side, 2 mm. ; margin with eight acute, elongated points. 



Spicules of the usual needle shape, bright yellow in color, usually 

 of smaller size but abundant on the stem and rachis; almost absent 

 on leaves except at their extreme bases, and on the polyp band ; there 

 being a few, however, on the general surface of the leaves. Those on 

 the calyx Avails larger, arranged in eight longitudinal rows, the npper 

 ends of the rows projecting into the eight marginal points. 



Below the true leaves there is a long series of rudimentary leaves 

 which dwindle away into mere spiny points. This series reaches to 

 within 47 mm. of the basal end of the stem in a specimen 8 inches 

 lone. 



