14 N. Annandale : The Fauna of Brackish Ponds. [Vol. II, 



ENTOPROCTA. 



x\mong dense masses of Vtctorella, Bou'erbaiikia and Irene 

 on grass stems I noticed, in some preserved material obtained 

 from Port Canning at the beginning of December, 1907, numerous 

 little polypoid organisms, evidentl)'-- Entoproctous polyzoa. Their 

 condition made it impossible to examine them properly, but on 

 December 24th I was able to collect living specimens. An in- 

 vestigation based on these and on carefulh^ preserved material 

 proved them to represent a new genus, for which I have coined 

 the name Loxosoinaioides, in order to indicate its resemblance in 

 one important character to Loxosonia ; in some of its characters, 

 however, it resembles Pedicellina more closely, and in others 

 Urnatella, while it is perhaps more closeh" allied to the American 

 Myosoma than to any other genus. 



LoxosoMAToiDEs, gen. nov. 



Colonial, deciduous Entoprocta arising from a creeping stolon ; 

 the calyx separated from the stalk by a diaphragm, with a slanting 

 or vertical lophophore, and bearing on its aboral surface a chitinous 

 shield, which is absent from the stalk. 



Loxusuiiiatoides colonialis, sp. nov. "''" 



Colony consisting of a large number of polypides, which arise, 

 singly and at considerable intervals, from a sparsely branched, 

 unsegmented stolon. Stalk smooth, minutely and irregularly annu- 

 lated, variable in length. Calyx with from twelve to sixteen 

 tentacles, which are bluntly pointed and relativeh' short. The 

 shield borne on the aboral surface covering the whole of one 

 side of the calyx, of an oval shape, covered with a large number 

 of minute subrectangular depressions, which are separated from 

 one another by narrow ridges, giving the whole structure a reticu- 

 lated appearance ; stout spines, very variable in number and size, 

 scattered irregularh" on the shield. Alimentary canal more or 

 less asymmetrical, the colon emerging from the stomach at one 

 side ; stomach subspherical, very large. 



Two distinct forms of the species can be distinguished. It 

 is impossible to separate them specifically, because polypides inter- 

 mediate between them occur, but the colonies representing them are 

 quite easy to distinguish as colonies, and the differences are prob- 

 ably due to differences in environment. 



Form A. — Stalk much longer than calyx, clean; calyx of 

 full-grown polypide measuring about 0-414 mm. in vertical length ; 

 spines on shield not very strongly developed (figs. 2, 3). 



For)}i B. — Stalk not or very little longer than cal3^x, encrusted 

 with inorganic debris ; calyx of full-grown polypide measuring 

 about 0-357 11^111- "1 vertical length ; spines on shield strongly 

 developed, black at the tip (fig. 4). 



