36 

 THE MARINE POLYZOA OF NORTHUMBERLAND. 



By ROSA E. ROPER, B.Sc. 



The following list contains the names and local distribution of 

 all the Marine Polyzoa which have up to the present time been 

 recorded from the coast of Northumberland. Ninety-six species 

 (exclusive of the very small number for which localities on the 

 Durham coast only are given) are recorded in Alder's Catalogue 

 (1857), in the supplementary catalogue 1861, and in the dredging 

 reports for 1862-64. Several of these species I have not been able 

 to find, but I have to record nine species and three varieties new to 

 the district. These are marked with an asterisk. 



The months in which I have observed the ocecia are given, but 

 the fact that these are in almost all cases the summer months is 

 probably only due to the fact that nearly all the material examined 

 was dredged during the summer. Ocecia have been found in mid- 

 winter on species living in the aquarium tanks and washed up on 

 the shore, the larvae of Cribrilina 'punctata and Eschar ella immersa 

 hatching out in the tanks in December and Januarj". 



The order and nomenclature followed throughout has been that 

 adopted by Canon Norman in his catalogue of the Polyzoa con- 

 tained in his collection, published in 1910. The names which 

 appear in italics after these names are those of Alder's original list. 

 The letters (a), (6), (c) and (d) refer to the volumes of the Trans- 

 actions of the Tyneside Naturalists' Field Club in which the records 

 occur. 



(a) Vol. III., 1854-8 ; (b) V., 1860-62 ; (c) VI., 1863-64 ; (d) 

 Nat. Hist. Trans, of Northumberland and Durham, I., 1865-67. 



CHEILOSTOMATA. 



Aeteidae. 



1.* AETEA TRUNCATA (Landsborough). 



Three or four cells of this species were found growing on a 

 valve of Venus ovata. The cells were furnished with the charac- 

 teristic tubular appendage given off from the middle of the dorsal 

 surface, but did not branch. This species has been previously 

 recorded from various places on the south and west of our coasts, 

 as well as from Southern Norway. 



