

Descriptions of Neiu, or Little Knoiun, Polyzoa. Qo 



mouth large, lofty, straight below. Beneath the mouth a 

 series of 5-7 fenestrae around an area continuous with that 

 of the mouth, depressed at the margin, and slightly bulging 

 centrally ; the mouth and fenestrate area encircled by a thick 

 margin; lateral processes large. At each upper angle a small 

 acuminate chitinous process (possibly the mandible of a 

 small avicularium) ; a minute marginal avicularium at the 

 middle of each lateral process at the extremity of a tube- 

 like mark. A minute sessile avicularium on a slight eleva- 

 tion between the cells; posterior surface umbonate; margin 

 finely sulcate. 



Port PhilHp Heads, Mr. J. B. Wilson. 



This very handsome and remarkable species differs from 

 all hitherto recorded in the constant gemination and pecu- 

 liar arrangement of the zooecia. The anterior avicularia are 

 very inconspicuous, and not always apparent, and tlie 

 avicularian nature of the chitinous point on the upper 

 ano^le of the zooecium is doubtful. 



Claviporella, n. genus. 



Branches springing usually from the summits of the 

 zooecia of a geminate pair, but occasionally from the sides- 

 of single zooecia. Zooecia single or geminate ; usually a 

 large lateral process on each side above, supporting a large 

 gaping avicularium, occasionally small, altered, or aborted. 



This genus is proposed for the reception of Gatenicella 

 aurita (Busk), G. geminata (Wyv. Thomson), and two 

 other species which are now described. It differs from 

 Gatenicella, chiefly in the peculiar key-hole form of the 

 mouth, and differs from Galpidiuvi, in which the shape of 

 the mouth is somewhat similar, in wanting the overarching 

 oral hood of that genus. There are also several (usually 

 four) blunt processes in the neighbourhood of the mouth.. 

 The species are all very small. 



G. pulchra, n. sp. Plate I., fig. 2. 



Zoarium very small; branches originating either from 

 the summits of geminate zooecia or from the sides of ordi- 

 nary zooecia. Zoeocia vase-shaped, with usually a wide 

 lateral process on each side, turned slightly forwards, and 

 supporting a gaping avicularium; mouth narrow, with the- 

 oral sinus very narrow and with a tumid border; two blunt, 



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