162 THE ROYAL SOCIETY OF CANADA 



the organism and includes them in the foraminifera under a new genus 

 Moellerina as Moellerina greenei. The number of spirals are stated 

 to be eight or nine. Ulrich's description and figures surpass in detail 

 and accuracy any so far presented, and after a study of the Kelly's 

 Island species the writer is convinced that Ulrich's description is 

 applicable also to it. One discrepancy, however, is noted. Whereas 

 all the specimens from Kelly's island examined by the writer, and 

 apparently those by Knowlton from the Falls of Ohio, have a right 

 handed spiral twist to the ridges, Ulrich figures one with a left handed 

 twist. Only nine spirals were observed by the writer in the Devonian 

 specimens to which he had access. But the number of spirals, as 

 evident from the discovery of Palaeochara, does not mitigate against 

 a possible Characeous affinity of this fossil. A much more serious 

 objection may be raised. A feature carefully noted by Ulrich, and 

 confirmed by the writer for the Kelly's Island species, is the presence 

 not of a thick single wall as interpreted by Williamson, Dawson, and 

 Knowlton, but of two thin walls with a broad intervening space, the 

 inner spherical cavity communicating with the exterior by tubular 

 prolongations of the inner wall at each end. The spiral ridges are 

 restricted to the outer wall, and are a part or ornamentation of the 

 wall itself, so that they afïord no evidence of a Chara construction in 

 support of the superficial appearance. 



Class Crustacea 

 Subclass Eucrustacea 



Anthrapalaemon hillianus Dawson 



1877 — Anthrapalaemon {Paloeocarabus) Hilliana, Dawson, Geol. Mag. Dec. 2, 

 Vol. 4, p. 56. Figure 1. 



1878 — Anthrapalaemon {Paloeocarabus) Hillianus, Dawson, Suppl. 2nd ed. 

 Acad. Geol. p. 55. Figure 10. 



Description: (Based on a flattened carapace.) Carapace barrel- 

 shaped, subquadrangular, greatest width exceeding the length exclu- 

 sive of rostrum. Anterior margin straight, furnished with three 

 marked spines, one rostral, long and thin, triangularly keeled, and an 

 antero-lateral spine on each side, short and stout, flattened, diverging 

 outwards from an angle of 30". Lateral margins conversely rounded, 

 provided in the anterior one-third with short spines or serrations, 

 directed forwardly. Posterior margin, grooved, concavely rounded, 

 joining the lateral margins in bluntly acute angles. 



