224 HALECIID^. 



difference between the sexes in the shape of the gonotheca 

 has as yet been noticed. 



Hab. On shells, &c., from deep water, not common; 

 Peterhead, Wick, Banffshire, from fishermen's lines ; Firth 

 of Forth (C. W. P.): on oyster-shells from Loch Ryan 

 (D. L.): Northumberland (J. A.): Seaton (J. Hogg): 

 Whitby (T. H.): Scarborough (W. Bean): Cornwall, off 

 Mevagissey, rare (Couch): Giant's Causeway (A. H. H.). 



[Off Reikiavik, Iceland, in 100 fathoms (T. H.): on a 

 fishing-bank off Caribou Island, Straits of Belle Isle, in 

 30-50 fath., frequent ; Square Island, a few miles north of 

 Cape St. Michael, in 30 fath., common (A. S. Packard, 

 jun.).] 



3. H. BEANII, Johnston. 



THOA BEANII, Johnston, B. Z. (1st eel.) 120, pi. vii. figs. 1, 2. 

 HALECIUM BEANII, Johnston, B. Z. (2nd ed.) 59, pi. ix. figs. 1, 2. 



Plate XLIII. fig. 2. 



ZOOPHYTE shrubby, irregularly branched, of a delicate and 

 graceful habit; STEM and larger branches compound, 

 tapering upwards, pinnate; pinnae alternate, often 

 branched, slightly zigzag, jointed at short intervals; 

 HYDROTHECJE alternate, one below each joint, small, tubu- 

 lar, somewhat dilated towards the aperture; GONOTHEC^E 

 borne at the base of the calycles, (male) elongate- 

 ovoidal; (female) slipper -shaped, with a short tubular 

 orifice in the middle of the upperside. 



THIS pretty species is extremely light and delicate, and, in 

 the absence of the curious female capsule, may be easily 

 recognized by its habit and mode of growth. In its young 

 state it is simply pinnate, but becomes much and variously 

 branched and assTimes a very bushy appearance. The 



