the Zoophytes of South Devon and South Cornwall. 81 



MOLLUSCOIDA. 



Class POLYZOA. 



Order INPUNDIBULATA (Gymnolcemata, Allman). 



Suborder Cyclostomata. 



Family Tubuliporidae. 



Genus Alecto, Lamouroux. 



A. retiformiSj n. sp. 



Polyzoary lobate, the lobes diverging from a common centre, 

 much and irregularly branched, the branches anostomosing 

 so as to form a rude network, the extremities generally 

 bifid ; surface minutely punctate, and often grooved trans- 

 versely ; zooecia scattered irregularly, the free extremities 

 of the tube projecting to a considerable distance, erect, ori- 

 fice plain. The polyzoary frequently rises into short cylin- 

 drical processes with a cellular apex. 



Specimens of this fine species measure about an inch across, 

 and form somewhat circular patches. Four or five much- 

 branched lobes radiate from a central point, the ramifications 

 anastomosing freely so as to form irregular reticulations. The 

 extremities of the lobes and of the branches are bifid. The 

 surface is often much thickened and grooved transversely ; 

 but in the newer portions towards the end of the branches the 

 lines which mark the walls of the zooecia are distinctly visi- 

 ble. In one of my specimens the erect processes with cellular 

 extremities are numerous and characteristic. The colour of 

 the polyzoary is white. 



The A. diastoporidesy Norman, is perhaps the most nearly 

 allied species. 



Hah. Salcombe Bay, on a valve of Pecten maximus j Corn- 

 wall, on Pinna from deep water. 



Family Diastoporidse. 

 Genus Diastopoea, Lamouroux. 

 D. sarmensisj Norman. 

 Cornwall, on stone from deep water. 



Suborder Paludicellea. 



Genus Paludicella, Gervais. 



P. Ehrenbergi, Van Beneden. 



On the underside of the leaves of water-lilies in the river 

 Clist, near Bishop's Clist, South Devon [Parjitt). This and 



