A. W. WATERS—REPORT ON THE BRYOZOA. IW 
there is a small semicircular one. ‘The surface is tubercular, the tubercles 
being very few, so that it cannot be called granular. The ovicell has a fissure 
in front, and the lamina extends into the oral aperture like « uvula, as already 
described in other species. 
On the dorsal surface there are numerous vibices with but few avicularia. 
This is a much more delicate species than I. granulata, MacG., the 
branches not being half the width, with the tubercles more distinct, also the 
operculum is not so wide and the ovicell differs, having a projecting plate. 
There are 11 tentacles. 
Loc. Ras el Millan and Um el Jerman, Red Sea, collected by Hartmeyer ; 
Prison Island, Zanzibar Channel (513), on the shore, collected by Crossland. 
[At the last moment I have received from Mr. Crossland some shells of 
Margaritifera vulgaris collected at Khor Dongonab. Incrusting them is one 
colony of Porella nitidissima, Hincks, known from Madeira and Mauritius, 
also Smittia trisp/nosa, Johnst., not recorded previously; besides these, Smittia 
eqyptiaca, Waters, Thalamoporella Rozierti, Aud., and tea recta, Hincks, are 
abundant.—10th February, 1909. A. W. W.] 
HXPLANATION OF THE PLATES. 
Prater 10. 
Fie. 1. Vittaticella Contez, Aud. Anterior surface, x 85. From Khor Dongola. 
2. Do. do. Dorsal surface, X 85. 
3. Do. do. Operculum, x 250, 
4, Do. do. Natural size. 
5. Serupocellaria Jollois, Aud. Anterior surface, X 25. Suez, amone corals, 
6. Do. do. Dorsal surface, x 25. 
fe Do. do. Mandible, x 85. 
8. Do. do, Vibraculum, x 89. 
9 Do. do. Natural size. 
10. Do. do. Section showing dark bodies by the side of the zowcium, x 50. 
From [as el Millan. 
11. Serupocellaria serrata, sp. nov. Anterior surface showing avicularia by the side of 
the zocecium, X 25. From Suez. ; 
12s Do. do. xoe 
13. Do. do. Dorsal surface, x 85. 
14, Do. do, Mandible, x 85. 
15, Serupocellaria mansueta, nov. X 25. (a) Avicularium, X 85. From Suez Bay. 
PLATE 11. 
Fig. 1. Bugula neritina, L. x 25. Showing the growth of the small fleshy mass at the 
inner side of the zocecinm, and from this the gradual development of the ovicell. 
From Suez. 
2, Do. do. Detached oyicell, x 50. 
oF Do, do, Zoarium seen from the side, showing the oyicells, x 25, 
