186 
vine: polyzoa of the wedlock shales. 
6. Rhopalonaria sp. 
Rhopaloiiaria sp., Vine. Ann. Mag. Nat. Hist., Aug., 1884, p. 86, 
fig. V. 
The figures of this species were supplied to me by F. D. Longe, 
Esq., F.G.S., and I am unable to give better evidence than that which 
I wrote for the Annals (loc. cit.) It differs from the Wenlock shales 
species, and if fuller descriptions were given, or specimens forwarded 
to me, either a distinct species, or at least a distinct variety might 
be established. 
Habitat : On Spirifer. 
Locality: Upper Silurian beds, probably Ludlow (F. D. L.) 
Related forms. — American. 
Rhopalonaria venosa, Illrich. 
= Ropalonaria id, Ulrich. Jour. Cine. Nat. Hist., vol. H., p. 26 
pi. VH., figs. 24-44a. 
Form and Locality : Hudson River group, Clarkville, Ohio. 
Habitat: On Streptelasma corniculum. Hall. 
Rhopalonaria pertenuis, Ulrich. 
= Ropalonaria id, Ulrich. Report, of the Low. Silurian Bryozoa 
of Minnesota. 14th Annual Rept., 1886. Geol. and Nat. 
Hist. Survey. 
" This species," says Mr. Ulrich, ''is closely allied to the Stoma- 
topora (Ropalonaria) elongata, Vine, from the English Wenlock 
deposit." (See Number 8.) Its relationship to R. venosa, Ulrich is 
still closer. 
Form and Locality : Rare in the Trenton shales at Minneapolis, 
Minnesota. 
Genus III. — Stomatopora, Bronn. 
As restricted in Brit. Assoc. Report, Fossil Polyzoa (mihi), 1883. 
For Synonyms, &c., see Busk &_Hinck'8. 
Zoarium repent, adnate or free at the extremities, giving o& 
erect processes (proboscina) : simple or branched : branches more or 
less ligidate. Zocccia in great part immersed, arranged in a single 
series or in several, which take a lineiir direction, or are very slightly 
divergent. 
