or Little Known, Polyzoa. 133 



Sckizoporella punctigera, n. sp. Fig. 13. 



Cells ovate, arranged in linear, radiating series, smooth or 

 nearly so ; mouth rounded above, nearly straight below, with 

 a narrow deep sinus ; four spines on the upper margin ; a 

 minute transverse avicularium on an elevated umbo im- 

 mediately below the mouth; ovicell rounded, thickly 

 punctate, and with a smooth rim. 



Port Phillip Heads, dredged by Mr. Wilson and myself. 



Closely allied to S. lata, but I think distinct. The mouth 

 is narrower, the sinus is much narrower and sharper, and 

 the ovicell is more prominent. 



Lepralia, setigera, Smitt. Figs. 2 and 3. 



Cells pyriform or ovate, convex, smooth ; a series of long, 

 slender, rigid spines attached to the circumference of the 

 cells except at the base ; mouth higher than broad, arched 

 above, straight or rather rounded upwards and forwards 

 below, constricted at the junction of the middle and lower 

 thirds by a projecting, pointed process, the edges bevelled 

 inwards, especially on the upper border ; a long, very 

 slender vibraculum on either side, opposite the lower part of 

 the mouth, extending downwards nearly the whole length of 

 the cell : ovicell rounded, with a thickened rim. 



Port Phillip Heads, dredged by Mr. Wilson and myself. 



I have no doubt that this species is the Esctuirella 

 setigera, of Smitt* and the Lepralia Kirckenpaueri, y&y. teres, 

 of Hincks.-f- Heller's L. Kirckenpaueri is, probably, a 

 different species. The chief peculiar! t}' is the remarkable 

 series of stiff, slender spines fringing the circumference of 

 the cells which is found in perfect specimens ; in older ones, 

 however, they are not present, and their absence, as well as 

 that of the delicate vibracula, with the more strongly 

 calcified and shorter cells, gives it a very different appear- 

 ance. The surface of the ovicell is divided into two parts, 

 the circumference being thickened; sometimes the inner 

 edge of this thickened part forms a distinct ridge, although I 

 have not seen it so prominent as in Hincks' figure of 

 L, Kirckenpaueri, var. teres. It can always be distinguished 



* Floridan Bryozoa,Part II., p. 58. Fig. 206. 

 f Annals and Mag. of Nat. Hist., July, 1880. 



