57 



The following measurements, in y., will give some idea of the great differences in the 

 size of the zooecia, in different conditions of their growth : 



A. Length of young zooecium. 



337. G. 276. A. 



B. Length of old zooecium, with functional polypide. 



C. Length of old zooecium, with degenerated polypide. 



800 

 1520 



2590 

 2800 



130. H. 



900 

 1520 



108. P. 



3280 

 3680 

 3920 



. IOIO 



D. Length of old zooecium, containing embryos. 



3135 

 3360 



E. Greatest diameter of young zooecium (A). 



370 



1 120 



I055 

 I330 



190 175 



The measurements given under E — H belong to the same zooecia as those recorded 

 in A— D. 



The longest zooecium measured (130. H.) is nearly 4 mm. long 1 ). An old zooecium 

 which has lost its polypide, and probably the distal end of its peristome, from the same Station, 

 is no more than 370 u, in length; which is less than that of the young zooecia. The specimens 

 with embryos (337. G.) are both more than 3 mm. long. 108. P., which consists entirely of small 

 zooecia, gives measurements which fall well within the limits of the young zooecia in 130. H. 

 The greatest diameters recorded are from zooecia with embryos (337. G.). 



2. Nolclla annectens n. sp. (PI. IV, figs 1 — 9). 



380.I. Stat. 47. Bay of Bima, 55 Metres; mud with patches of fine coral-sand. 



Zooecia extremely variable in form; with or without a proximal stolon-like portion. The 

 basal adnate portion is very variable in size and shape, and the free tubular part (peristome) 

 is equally variable in length and in the angle it makes with the adnate portion. The peristome 



1) Cylindroecium allum^ desenbed by KlRKPATRICK (iSSS, Arm. Mag. Nat. Hist. (6) II, p. 19) from Port Phillip, Victoria, reaches 

 a length of 4.6 mm. 



57 



SIEOGA-EXrEDITIE XXVIII a. 



