26 BRITISH PALAZOZOIC FOSSILS. [Zoopuyra. 
STENOPORA ? GRANULOSA (Gold. Sp.) 
Syn. and Ref—Ceriopora granulosa, Gold. Pet. Germ. t. 64. f. 15. 
Sp. Ch.—Corallum forming varicose, or irregularly swollen, cylindrical, dichotomous branches, about two 
lines in diameter, covered with irregularly polygonal small cell-openings, about five in the space of one 
line measured transversely, or four in the same space measured longitudinally; cells separated by obtuse 
spaces about their own diameter in width, each surrounded (when well preserved) with a row of about twelve 
large obtuse granules. 
From the irregularity of the shape of the cell-openings and the obtuseness of the thick interspaces, I 
have some doubts of this coral belonging to the genus Stenopora, these points rendering it possible the 
species may be an aberrant Canites. 
Position and Locality — Wenlock limestone, Dudley, Staffordshire. 
4th Subfamily. HALYSITINU. 
Cell-tubes more or less separate, either connected by the lateral union of two sides, in linear series, or by 
transverse tubules; lamellee forming rudimentary internal strie; diaphragms strong, usually imperfect in the 
middle ; walls strong imperforate. 
Genera :—1, Halysites ; 2, Syringopora; 8, Thecostegites; 4, Aulopora; 5, Cladochonus. 
Genus. HALYSITES (Fisch.) 
Syn. = Catenipora. (Gold.) 
Gen. Char.—Corallum of numerous rarely dichotomous tubes laterally united in numerous elliptical or 
irregularly labyrinthine cylindrical groups, their mouths opening nearly at one level in an open chain 
pattern ; each tube with about fourteen or sixteen internal vertical sulci (rudimentary lamellee), and trans- 
versed by numerous internal funnel-shaped diaphragms. 
This genus is closely related to Syringopora (Goldfuss), differing mainly in the lateral union of the branches 
into contorted cylindrical groups. The increase is by lateral budding. 
HALYSITES CATENULATUS (Linn. Sp.) 
Ref. and Syn—Tubipora id. Lin. (Gm. ed.) = Catenipora escharoides (Lam.) + Catenipora labyrinthica (Gold.) 
Pet. Germ. t. 25. f.5 & 4.=C. approximata + O. distans+ C. reticulata, Kichwald. Zool, Spec. t. 2. f. 9 to11. 
+ OC. exilis, id. f. 138. 
Sp. Ch.—Corallum of vertical plates formed by the lateral union of the tubes, either anastomosing irregularly 
into sub-pentagonal groups, three or four lines in diameter, or anastomosing less frequently, forming elongate 
winding loops on the surface an inch or more in length; openings of the separate tubes oval, more or less 
compressed, and varying from half a line to one line in length, the space between two of the internal 
diaphragms about equals the diameter of the tube, the small opening of the young tubes most frequently 
seen at the points of anastomosing ; external surface of plates, longitudinally undulated by the convexity 
of the separate tubes and crossed by fine transverse strize of growth. 
From the careful examination of the changes manifest in different parts of one large specimen, I think 
with Mr Lonsdale, it is not possible to separate the two extreme varieties, figured as above by Goldfuss, 
under the names Catenipora escharoides, and C. labyrinthica, and 1 consequently unite them under the 
oldest name of Linnzeus. 
Position and Locality: Common in the dark limestone of Llansantfraid, Glyn Ceiriog, Denbighshire ; 
limestone at Applethwaite Common, Westmoreland ; forming large masses in the Coniston limestone of Coniston 
Water-Head, Lancashire ; and Sunny Banks, near Coniston, Lancashire ; in the calcareous schists of High 
Haume, Dalton in Furness, Lancashire; in similar calcareous schists of Pen y Craig, above Glyn, Llan- 
gynyw, Montgomeryshire; Mathyrafal, S. of Meifod, Montgomeryshire ; east foot near Tyn y Fron; Wen- 
lock limestone, Wenlock, Shropshire ; Golugoed, Mandinam, Caermarthenshire. 
