or Little-known, Polyzoa. 183 



at the bottom of whicli is a punctate membrane; the 

 elevated fibrillse with numerous sharp, straight, or uncinate 

 spines, projecting forwards. Zooecia arranged in radiating 

 lines of single series, erect, very loFty at the central starting- 

 point, and gradually diminishing in height to the circum- 

 ference ; mouth rounded, with usually a sharp spine on each 

 side above. Intermediate cancelli numerous, large, irregular, 

 with numerous minute internal spines. 



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



The only specimen I have seen of this well-marked species 

 forms a beautiful cupped disc one-third of an inch in dia- 

 meter, the smooth edges of the basal lamina much turned 

 upwards. The central depressed portion is occupied by a 

 peculiar reticulation of smooth, round lilbrillas, from which 

 numerous scattered, small, sharp spines project forwards. 

 The zooecia are also very cliaracteristic. Those originating 

 the series from the central i^eticulate space are very lofty ; 

 they rapidly but uniformly diminish in height. The peri- 

 stome is produced on either side towards the upper part 

 into a fine, sharp process. The cancelli between the zooecial 

 rows are irregular in shape, and lined with minute, sharp 

 spines. 



Family Yesiculariid^. 

 Amathia inaronata, n. sp. 



Zoarium much branched dichotomously ; the branches 

 articulated, thick ; internodes short, each almost entirely 

 occupied by a single biserial group of zooecia, four to eight 

 in each series, slightly diminishing in height towards the 

 distal extremity. No filiform appendages. 



This species differs from A. lendigera in the shortness of 

 the internodes, which are each almost entirely occupied by 

 a single group of zooecia. The height of the zooecia is also 

 more nearly uniform. 



A short time ago Mr. Cosmo Newbery placed at my 

 disposal for examination some marine specimens collected iu 

 the Straits of Gaspar and Baly by Captain Worsley, of the 

 telegraph ship " Sherard Osborne." 'f'hey consisted chiefly 

 of Crinoids, some magnificent specimens of Scalpellum 

 villosum (Darwin), and a few Polyzoa. The last were all 

 from the Straits of Gaspar, in lat. 8 degs. 19 mins. S., long. 

 107 degs. 17 mins. E., and were obtained from a depth of 

 17 fathoms. There are six species in all, of which three 



