ON CRETACEOUS POLTZOA. 



421 



Danian. The zone of Marsupites testudinarius has yielded a few forms, 

 chiefly from the locality of Highfield, and the zone of Micraster cor-angumum 

 lias also yielded several very beautifal species, some of which are 

 unique. The localities are Witherington, Horsebridge, and Quidhampton. 

 Unfortunately the great bulk of the Salisbury Polyzoa were un- 

 suited for microscopical examination on account of their size. Since these 

 were examined and returned to Dr. Biackmore with a temporary list of 

 species, the mass of Chatham Polyzoa which I was able to mount as 

 slides have been most carefully studied for the purpose of identification, 

 and in some few cases I have altered the name given in the temporary list. 

 It is right that I should make this remark, because it is the intention of 

 Dr. Biackmore, I believe, to place the series of Polyzoa referred to, when 

 properly arranged, in the Salisbury and South- Wilts Museum. In the 

 present list the series is arranged consecutively. In the columns the 

 zones where the species were found are indicated by the typical letters 

 already referred to, and on the extreme right the name of the locality as 

 given by Dr. Biackmore. I have only the broken fragments which be- 

 came detached in the passage of the Salisbury species, and a few forms 

 presented to me by Dr. Biackmore — Lunulites, &c. — so that the present 

 list is compiled from careful notes and drawings of the species made 

 during the time that the collection was in my hands. From other locali- 

 ties I have similar examples of the species indicated in the list, and I have 

 only placed the usual asterisk (*) against those forms that I have no 

 duplicate of. My identification of these may probably be erroneous, so 

 that I will advise Dr. Biackmore and other collectors in Salisbury and 

 its neighbourhood to verify the accuracy in my present list of the specific 

 names so indicated. I had Polyzoa from four zones only. Zone E not, 

 being represented. 



(The small figures on the right-hand side refer to the habitats on which the species 

 were found. See list at the end of this section.) 



