12 
extend slightly irregularly ; they then form a somewhat close bundle, the 
different branches of which are connected by a few transverse tubes. The 
diameter of the corallites seldom exceeds a millimetre. 
Although most of these characters, except the first mentioned, obtain 
in the specimen before me, I cannot say positively that it belong to Linnaeus’ 
species, as it consists only of a piece of compact argillaceous rock, on which 
there has been preserved the external impression of some number of corallites. 
Formation and Locality. — The specimen of which I have just been 
speaking was found on the hanks of the Delegate Diver. As well as the 
imprint of Syringopora, it contains impressions of Stropliomenes pecten and 
Airy pa reticularis. There is no doubt that it is Silurian. 
Genus — HALYSITES, Fischer de Waldheim. 
Haltsites eschaeoides, Lamarck. 
Catenipora escharotdes, Lamarck, 1816, Hist. Anim. sans Vertebres, t. ii, p. 207. 
T'Ubipora catenulata, S. Woodward, 1830, Syn. Table Brit. Org. Eem., p. 5. 
JLalysites escharoides^ Biscber de Waldbeim, 1837, Oryct. Grouv. Moscou, p. 164, pi. 38, 
fig. 3. 
„ „ Milne Edwards and J. Haime, 1852, Mon. Brit. Boss. Corals, 
p. 272, pi. 64, fig. 2. 
This coral is easily recognised by the chain-like network of its upper 
surface ; one can seldom see more than two or three corallites forming one of 
the sides of this net ; calices elliptical, longer axis measuring from one to 
two millimetres. 
Horizon and Locality .—Onlj one specimen of this species has been 
found in a hard slightly grey siliceous rock at Wellington. The upper 
surface only of the coral is visible; all the rest has disappeared. This species 
belongs to the Dpper Silurian, and has been found in England, Sweden, 
Dussia, and North America. 
