186 REPORT—1883. 
Wenlock Shales.! S. dissimilis, Vine. Below Wenlock Lim., 
Shropshire. | 
¥ +) var. elongata, Vine. _,, R 
Wenlock Limestone. i var. conypressa, Vine. ,, a 
Permian. S. Voigtiana, King. Humbleton, Yorkshire. 
Lias. S. montlivatiformis, Vine. (See ‘ Third Brit. 
Assoc. Rep. on Fos. Polyzoa,’ 1882.) 
S. antiqua, Haime. 
bP ” bes 39 9 
Inf. Oolite. S. dichotoma, Lamx. _,, - - 3 
Gt. Oolite and Corn- 
brash. S. Waltoni, Haime. * s i Fe 
Cornbrash. S. dichotomoides, D’Orb. 3 i 5 
Cretaceous. S. gracilis, Milne-Ed. (See 1st part present 
Report.) 
K S. ramea, Blainv. re Fe * 
55 S. ramosa, Michelin. 5s a - 
Infra-Oolite. S. (Proboscina) Jacquoti, Haime. (‘ Third Brit. 
Assoc. Rep.’) 
Gt. Oolite. 3 x Davidsoni, Haime. ,, __,, 
I have examined specimens of the whole of the above, with the 
exception of King’s species, which I give upon his authority. 
Family I. Tusuxiroripa. 
Zoarium adherent, more or less free, flabellate, lobate or cylindrical. 
Z4oecia tubular, disposed in contiguous series. Oceciwm an inflation of the 
surface of the zoarium at certain points, or a modified cell. (Hincks’s 
‘Brit. M. P.’ pars.) 
Genus 3. DiasropornLia, Vine. Type D. consimilis, Lonsd. 
», 4. Diastorora, Lamx. », D. diluviana, Lamx. 
ss (biserial ) = Mesenteripora, pars.* 
. Tuputirora, Lamarck. Type T. flabellaris, Fabric. 
. Enratoppora, Lamx. 
. IpMONEA 
SIS Or 
2° 
In any classification of Recent or Fossil Polyzoa, the grouping of 
suitable genera under this family name will be always difficult, and 
perhaps, to some, unsatisfactory. I have, however, followed very closely 
Mr. Hincks, but working as Iam upon fossil species, with a pretty full 
knowledge of the recent, I have made a few alterations advisedly. 
The genus Diastoporella is the nearest approach to Mesozoic Diasto- 
pora that we have in the Paleozoic rocks. It is rare in the Wenlock 
Shales—not so much so in the Wenlock Limestone, but I have obtained 
the best results from the study.of a fine specimen presented to me by 
Professor Gustav Lindstrom, and upon this I found the present genus, 
1 In the Lower Silurian Series, America, there are many beautiful forms of 
Stomatopora, and Proboscina range from these lower rocks upwards. See Ulrich, 
Am. Pal. Bryozoa. 
? In Mr. Walford’s cabinet there are still many undescribed species which, if 
worked up, would increase the number and range. 
3 It may be well, by way of preventing a misconception, to refer to the genus 
Terebellaria. I cannot give it a place in the present classification, but having given : 
an account of the development of the species in my ‘ Third Brit. Assoc. Rep.’ 1882, 
I refer the student to that paper for further remarks. 
