30 G. F. MATTHEW: ILLUSTRATIONS OP 



loculi, wliiih have a longitudinal arrangement, and are conneeted by frequent transverse 

 openings through the dividing septa. The ascending branches of the skeleton are not 

 always cylindrical and tubular, but sometimes take the form of leaf-like plates. 



Length of the ascending branches of the skeleton, 14 mm. or more. Engirdling striae 

 of same about \ to J mm. apart ; longitudinal strito about 10 in the space of a millimetre. 



Horizon and Locality. In greyish-grey shale of Div. I.e. Hanford Brook, 8t. Mar- 

 tin's. Rare. 



PROTOSPONGIA, Salter. 



Among the more delicate organisms in the shales is one which appears to be congeneric 

 with Protospongia, as represented by P. major (Hicks), of the Welsh Cambrian strata (Solva 

 group). The writer has therefore placed it under Protozoa, although he thinks there are 

 strong reasons for associating it with the Hydrozoa, and especially with Dictyonema, as 

 , the skeleton appears to be horny and there seem to be cellules on some of the ribs ; if on 

 further examination they prove to be of the nature of hydroids, he would suggest for them 

 the name of Protodictya. 



Protospongia (?) minor, n. sp. (Plate V. Fig. 2.) 



A thin, flattened or lamellar frond, traversed by delicate ribs or fibres : these are usually 

 in sets, nearly at right angles with each other, though sometimes apparently branching ; 

 at distant intervals there are solitary fibres or ribs, of greater thickness than those which 

 form the principal part of the skeleton. The framework supporting this fossil appears to 

 be of horny rather than siliceous consistency, and does not differ in its conditions from 

 those of a fossil referred further on to the Hydrozoa. 



Size and form unknown, but patches or films of the organism, an inch in diameter, 

 have been met with, and it is sometimes found in overlapping layers that give a laminated 

 structure to the shales in which it occurs. The spaces between the parallel fibres of the 

 framework are about J of a millimetre. 



This organism, though of much smaller size, is very similar to Protospongia major 

 (Hicks). It may also be compared with Dictyonema irregularis (Hall) of the Quebec group. 



Horizon and Locality. In the fine-grey shales of Div. l.c, at Porter's Brook, St. Martin's. 



Protospongia (V) minor, tnr. distans. (Plate V. Fig. 3.) 



This with meshes of twice the size of those above described, and with more distinct 

 bars, occurs at a higher horizon. 



Horizon and Locality. In the fine, dark shales of Div. l.d, at Porter's Brook, St. Martin's, 



EOCORYNE, u. gen. 



In the fine shales of Division 1 are layers which have minute, hollow, branching, 

 siliceous organisms, of a white colour, scattered over the surface ; these objects are rigid 

 and penetrate the layers of the shale ; they appear to be excluded from the Radiolarians by 



