152 PERCY SLA DEN TRUST EXPEDITION 



perforations. There are four spines above the orifice, which is channeled below and has 

 a wide central and two small, lateral denticles within its lower margin. There is an 

 avicularium placed sideways, sloping across below and almost over the channel in the 

 peristome. There are no ooecia. 



Seychelles. 



87. Smittia glomerata, n. sp. (PL 8, fig. 12). 



Zoarium loosely incrusting, yellow, mamillate. Zooecia small, rotate or elongate, more 

 or less raised in front or only the margins raised, giving a honeycomb appearance, turning 

 various ways and heaped upon each other often, the surface roughened, perforated at the 

 margin and sometimes with lines radiating from the orifice outwards. Orifice round or 

 slightly pointed below with a central and two lateral denticles within, the peristome 

 raised sometimes all round, sometimes at the back and sides, sometimes at the front 

 and sides, there are crenulations within, below the upper margin, and above this a mark 

 as it were the base of a single spine or, more rai-ely, of two. Avicularia to one side of 

 the orifice, small and spatulate or pointed and raised on an eminence, or large and the 

 length of the zooecium or sometimes pointed with a serrated beak. Ooecia with an arched 

 perforated area and raised process above. 



Cargados. 



88. Smittia trispinosa, Johnston. Hincks, Brit. Mar. Pol., p. 353. 



There are several thin, brown, incrusting colonies which have a good deal of variation 

 to be noticed in the avicularia, spines and height of the peristome. They have all the 

 usual three denticles below and crenulated inner edge to the peristome above, the front 

 walls of the zooecia roughened, with a perforated margin and ooecia with a perforated area 

 in front, and sometimes raised processes above. Spines vary from 1 — 3. 



Cargados, 20—30 fath. ; Saya de Malha, 29 fath. 



89. Smittia yiitida, Verrill. Hincks, Ann. Mag. Nat. Hist., ser. 5, vii, p. 159. 



The surface of the zooecium is finely granular; there are four spines above the 

 orifice; avicularia are directed outwards and downwards. This is a large species like 

 S. reticulata. 



Saya de Malha, 47 — 125 fath. ; Salomon, 75 fath. 



90. Smittia ornata, n. sp. (PL 8, fig. 13). 



Zoarium forming thick layers of a pale brown colour covered by a transparent 

 membrane, zooecia large, broad, with slightly roughened surface, perforated round the 

 margin. Orifice with the peristome much raised at the sides, often two spines above 

 or a broad flat process in their place on the upper margin continuous with the raised 

 sides of the peristome. Avicularia very varied in size, shape and position; usually a 

 large pointed one on either side of the orifice, directed upwards and lying against the 

 raised peristome, often a very large spatulate one, instead, lying across the zooecium 

 and almost covering it, or, there may be numerous, small, rounded and scattered 



