107 



T. serpens is a branched species and is generally para- 

 sitical on other corallines, while this is an encrusting species 

 and never branched. In the former the tubes are short and 

 in contact, in tlie latter long and separated from each other, 

 hence there can be no doubt of their being specifically 

 distinct. 



TUBULIPORA. (dcjlexa, R. Q. C.J Polypidora erect, 

 cylindrical, with waved tubes projecting from all parts. 

 PI., xix., fig. 5. 



Hab. On shells from deep water, common. Polperro, 

 Mevagisse}' bay, and off the Deadman point. 



This small species varies in height from a quarter to half- 

 au-inoh. It is calcareous, white, columnar, and unbranched ; 

 its upper termination is very frequently enlarged into a glo- 

 bular head. The tubes observe no regularity in their ar- 

 rangement, but arise without order from all parts of the 

 polypidom and project considerably in a bent or tortuous 

 manner. They are shorter below than above, most probably 

 from the older portions being broken off, and tlie apertures 

 are even and unarmed. Tlie base is slightly spreading and 

 firmly adherent. Though this species is so common as to 

 be found at all depths, yet I cannot find it referred to by 

 any of the authorities to which I have access. 



TUBULIPORA. ( fimgia,R.Q.C.) Pedunculated; the 

 upper portion expanded into a flat round surface; tubes 

 projecting from the upper part of the circumference ; 

 centre nearly plain. PI. xix., fig. 4. 



Tubipora pennicillata, Turton's Lin., vol. 4, p. 615. 



Hab. On shells and stones from deep water, common ; 

 from the Eddystone Lighthouse to the Deadman point. 



This pretty species is calcareous, and varies to a quarter 

 of an inch in height. The upper portion is expanded into 

 a flat head, having on its superior surface, one, two, or three 

 rows of projecting tubes round the circumference ; the centre 

 is either plain or marked with a few irregular cells. The 

 cells are distant from each oilier, with slightly oblique, un- 

 armed apertures, and lean towards the circumterence of the 

 flat surface. Sometimes they are almost even with the 

 surface, and at others project so considerably as to hide all 

 the surface of the disc except the central plain spot. Tlie 

 lubes are rather small in calibre. Tliis species is very com- 

 mon in deep water, and though sometimes found on shells, 

 most commonly prefers thin slate or a red compound mica 

 looking stone. 



