REPORT 01ST THE POLYZOA. 
9 
At first sight I had regarded this form as specifically distinct from the well-known 
Atlantic and Mediterranean species ; hut upon further examination it is obviously to be 
regarded merely as a variety. The typical form has been described by Sir Wyville Thomson 
(Nat. Hist. Review, vol. v., 1858), from Port Philip, under the name of Cothurnicella 
dceclala. The comparison of a specimen with which I was favoured by Sir Wyville Thomson, 
with one from “ Egypt,” shows that the two are identically the same. The species, there- 
fore, would seem to be very generally distributed, occurring, according to d’Orbigny, in 
the Mediterranean and at the Canaries, and I have specimens from the coast of Calvados, 
from Nice, Egypt (Sir Jos. Banks), and Tyre (Mrs. Gatty). 
Division II. — RADICELLATA. 
Group A. CELLUL ARINA. 
Family IV. Catenariadje. 
Catenaridce (pars), d’Orb., 1850-52. 
Catenicellidce , Scrupariadce (pars), Busk, 1852. 
Cellularieoe (pars), Smitt. 
Character. — Zocecium radicate, segmented, internodes, except at a bifurcation, formed 
of a single zocecium. 1 
The Challenger Collection contains the following genera : — 
1. Catenicella , Blainville. 
§ a. fenestrates. 
(1) Catenicella ventricosa, Busk. 
(2) Catenicella hastata, Busk. 
(3) Catenicella plagiostoma, Busk. 
(4) Catenicella cribraria, Busk (Pl. I. fig. 6). 
§ /3. vittatce. 
(5) Catenicella sacculata, n. sp. (PI. I. fig. 7). 
(6) Catenicella elegans, Busk (PI. I. figs. 2, 3, 5). 
(7) Catenicella umbonata, Busk (Pl. I. fig. 1). 
(8) Catenicella pulcliella, Maplestone (Pl. I. fig. 4). 
1 In Cal'pidium, the intemode may he said to he hi- or tri-locular, as it presents in front two or three oval 
orifices, although behind it exhibits no trace of division. 
(ZOOL, CHALL. EXP. — PART XXX. — 1884.) G g 2 
