2 THE VOYAGE OF H.M.S. CHALLENGEE. 



The laro-er and more fully developed specimens correspond pretty closely with my 

 Pteroeides esperi, var. latifolia, which was collected by Professor Semper at nearly the 

 same locality (near Bohol) ; but the Challenger specimens, like those of Professor 

 Semper, vary in the foxm of the leaves, which are also larger in some specimens and 

 smaller in others, in colouring, and in the number of the leaves and the number of 

 their spines. 



The largest perfect specimen measures 132 mm. in length, of which 99 belong to the 

 pinnuliferous part, and 54 mm. in breadth. The broadest imperfect specimen is 80 mm. 

 broad, and the pinnuliferous portion 84 mm. long. The number of leaves in both speci- 

 mens is twenty-five, and that of their spines eight in the first and ten to twelve in the 

 second. 



2. Pteroides hreviradiatum, Koll. 



Two well-preserved specimens, with the label, "6th May 1875, Yokohama, Japan, 

 5-25 fathoms." 



The laro-er of these specimens measures 180 mm. in length and 100 mm. in breadth, 

 the other is 145 mm. long and 85 mm. broad. They are identical in structure, and 

 ao-ree pretty well with my variety latifolia. The whole polypidom is colourless, with the 

 exception of the polypiferous border of the pinnae, which is pale blue. 



Sarcophyllum, Koll. 



Sarcophyllum grande, Gray. 



Three fragments with the label, "Port Jackson, 6-15 fathoms." 



All three are colourless, and rich in small calcareous needles in the polypiferous zone 

 of the pinnules. 



Family 2. Pennatulid^. 

 Pennatula, L. 



1. Pennatula naresi, n. sp. (PL I. figs. 1,2). 



Polypidom large, red and yellow in colour ; pinnules triangular, hard, not transparent ; 

 polyp-cells alternating, numerous, with eight long spines ; polyps with small calcareous 

 spicules in the tentacles and in the stomach walls ; zooids lateral and ventral, the latter 

 in sets beginning at the ventral borders of the pinnules. 



Feather more than double the length of the stalk, and more than four times longer 

 than broad. 



Pinnules twenty-nine, of which the lowest six or eight are rudimentary; the exact form 

 of these could not be determined, as this portion of the single specimen is defective. The 

 fully-developed pinnules are triangular, with a curved free end. The expanded base is 



