KINGSTON BOTANICAL SOCIETY. 211 



Axis — Tapering- regularly from the front of the head to the pos- 

 terior margin of the tail, convex, as wide as the pleurae in 

 front and less posteriority, the rings of the axis run into the 

 groves of the pleurae — marked by a deep grove. 

 Tail — Semicircular, the lateral lobes marked by two or three ribs 

 with a deep grove as in the pleurae, owing to which and the 

 smallness of the specimen, it is difficult to perceive the line 

 of separation between the body and tail. 

 The eyes and free cheeks are absent in all the specimens. 

 Affinities — Iu form and number of pleurae it resembles Cjjphon- 

 iscus Socialis (Salter) but differs from it in details of structure 

 — the pleurae are of a different type, having the groove run- 

 ning along the middle, straight outwards, and not obliquely 

 outwards and downwards, as in Salter's figure. The pygidium 

 is entire but is as deep grooved as the pleurae, the whole 

 form is not so convex, and the pleurae are not facetted. 

 It appears from the outward edge of the fixed cheeks that the 

 facial suture cuts the margin in front and posterior margin far out- 

 ward, The head of Menocephalus Salteri resembles closely that 

 of Batkyurus Saffordi in the flat arched border in fixht of the 

 Glabella, and in the three convex lobes into which the head is 

 divided. 



Dedicated to J. W. Salter, Esq, Palaeontologist of the Geological 

 Survey of Great Britain. 



This beautiful little crustacean was found at Point Levis in the 

 Quebec Group of Rocks, in the same band of Limestone as Olenus 

 Logani. 



BOTANICAL SOCIETY OF CANADA. 



The usual monthly meeting was held in the University Hall, 

 Kingston C. W. on Friday evening, March 13, Rev. Prof. Wil- 

 liamson, LL.D., presiding. 



The following papers were read ; — 



1. Remarks on the Flora of Brockville, C.W., and vicinity. By 

 Robert Jardine, B.A. 



2. Communication from Dr. Francis W. Bird, with fresh spe- 

 cimens of broad-leaved evergreens from the woods of Virginia, in- 

 cluding " Live Oak," from within the walls of Fortress Munroe, 

 Hollies, &c. Read by Prof. Dickson, M.D. 



3. List of ferns collected in the neighbourhood of Hamilton' 

 O.W. By Judge Logie. 



