LAURA R. THORNELY—REPORT ON THE HYDROIDA. 85 
Gonangia are absent from these as from the Ceylon specimens, and so are 
still unknown. 
Locality.—Suez Bay, 5 fathoms. 
There appears to be a resemblance between this species and Elof Yiider- 
holm’s * ZL. gracilicaulis in the polysiphonic stem, the arrangement of the 
hydrocladia, and in the form of the hydrothece, but his form is unbranched. 
The absence of gonangia from both makes identification uncertain. 
AppENDUM.—While this paper was passing through the press, Mr. C. 
Crossland sent from Port Sudan some half-dozen colonies of anew (?) species 
of Ceratella, which are described as follows :— 
Family CERATELLID &, Gray. 
CERATELLA CROSSLANDI, ? sp. n. 
Colony erect; stem deep brown in colour, flattened, much branched, 
anastomosing here and there and often expanding into spongy extremities, 
which sometimes adhere to other branches or to foreign bodies, spreading 
over them in a root-like manner. ydrophore reduced to two wing-like 
pointed processes, one on either side of the aperture through which the zooid 
protrudes. Zooids situated on all sides of the stems, sparsely or fairly 
crowded in placeg and varying in size, the largest having from 30-40 
scattered, capitate tentacles. Gonophores not seen. 
Locality.—Several colonies, the largest measuring 9 inches high by 12 inches 
wide, growing on shells, and attached to the undersides of vessels at Port 
Sudan. 
This may be a larger form of Hickson’s C. minima from Zanzibar, but 
differs in some respects. 
bp dais Ate 
10th October, 1908. 
EXPLANATION OF PLATE 9. 
Fig. 1. Pertgonumus vagans, sp. n. 
2. Obelia bifurcata, Hincks. Showin gonothece (previously unknown). 
3. Campanularia denticulata, Clark. Showing gonothece (previously unknown). 
4, Lovenella corrugata, sp. 0. 
5. Calycella? sp. 
* “ Aussereuropiaische Hydroiden in Schwedischen Reichsmuseum,” Archiv. Zool. i. 
