34 PROCEEDIl^^aS OF THE NATIONAL MUSEUM. vol.43. 



individual calyx is a double cone or spindle in shape, the distal end 

 being much longer and more pointed than the proximal ; or they might 

 be regarded as flask-shaped, about 2.5 mm. long and 1.5 mm. broad 

 at the basal swelling. The calyx spicules do not project much beyond 

 the margin, but form 8 well-deflned vertical bands of small delicate 

 spicules, much less conspicuous than other species of this genus in the 

 collection. 



Zooids: There is a very large zooid on the ventro-lateral surface 

 just at the edge of the base of each leaf, consisting of an elevated 

 ring surrounding a relatively enormous aperture. From this a triple 

 row of much smaller zooids passes upward and dorsally along the 

 rachis between the leaf bases, but does not reach the dorsal surface. 

 This row finally becomes a single row of zooids, and near its end is a 

 very small but evident calyx, showing polyp tentacles; a feature not 

 seen before. The zooids have minute spicules in their walls. 



Spicules: These are all relatively small colorless needles. 



Color: Light grayish-brown throughout, darkening to reddish-brown 

 on end of stem. 



Locality. St&iion 494S; O Shima Light, N. 11° E., 12 miles; 65 

 fathoms. 



Tyiye-specimen.— Cat. No. 30048, U.S.N.M. 



PENNATULA INERMIS, new species. 

 Plate 5, fig. 3. 



Total length of colony, 43 cm.; stem, 7 cn:ft There is a spindle- 

 shaped swelling with a greatest diameter of 5 mm., 4.6 cm. from the 

 end, which is longitudinally grooved in the preserved specimen, 

 and an end bulb in the shape of a flattened lobe. 



There are about 50 pairs of leaves which are rather distant for this 

 group, there being a space of about 3 mm. between adjacent leaves. 

 The individual leaf is strictly triangular in shape, the edges all being 

 nearly straight. The lower edge is 14 mm. in length, the polypiferous 

 border 12 mm., and the attached base 9 mm. The leaf is fleshy and 

 opaque. 



The calyces are in two rows, although there appear to be three in 

 places^ about 28 to the row. They are tubular in form, and so tliin 

 that the polyps appear to be nude. They are 2 mm. in length, the 

 margin being faintly evident as a slightly thickened collar around the 

 polyp. There are 8 dimly outlined longitudinal corrugations. The 

 calyces and dorsal surfaces of the tentacles are encrusted with very 

 short bar-like or oval disk-like spicules. 



Zooids : There is a band of ventral zooids on either side of a well- 

 marked ventral groove on the rachis, but quite distant from it. The 

 individual zooids are minute and there are about three rows in each 

 band. The lateral zooids are larger finger-like bodies in rows run- 



