131 
Horizon and Locality. From a coral reef in limestone above the 
horizon of the Simpson shale; Letorhynchus zone of the Upper Devonian. 
Root river, about 40 miles above its confluence with the Mackenzie, 
North West Territories, Canada. Collector, G. S. Hume. The specific 
name is proposed in honour of E. M. Kindle, Chief of the Division of 
Palaeontology, Geological Survey, Canada, whose researches have placed 
the correlation of the Upper Devonian formations of the Mackenzie region 
upon a firm basis. 
Melocrinm mackenzie n. sp. 
Plate XXIV, figures 10-13 
A medium-sized species, ranging from 15 to 25 mm. high and 14 to 
24 mm. wide; one abnormally large broken specimen is 30 mm. in height 
without the base. Calyx rotund, obliquely deflected from the vertical, 
and with opposite sides distinctly unequal in height; slightly higher than 
wide, and tegmen about one-fourth of the total height. Plates smooth, 
slightly convex, with depressed sutures, but not pitted at the angles. 
Base low, broad, not protuberant, and with a wide column facet; plates 
at opposite sides more or less unequal. Tegmen somewhat lobed, com- 
posed of numerous plates, smooth or pointed. Anal opening subcentral, 
apparently without a tube. 
There is some intergradation between this species and the last, from 
the same beds, but typical specimens can be readily distinguished by the 
rounded contour, swelling sides of dorsal cup, and greater elevation of 
tegmen, as well as by the less prominence of the basal plates. There are 
seven specimens fairly referable to this form upon the average of characters, 
and several of them are so well defined that they must necessarily be 
separated from all the other species. In the rounded and asymmetric 
contour of the calyx the species may be compared with M. benedeni and 
M. mespiliforinis of Fraipont from the Belgian Upper Devonian area. 
Horizon and Locality. Same as last. 
Melocrinus whittakeri n. sp. 
Plate XXIY, figures 14-17 
A medium-sized species, the average of three specimens being about 
23 mm. high by 19 mm. wide at the arm bases, but the base not exceeding 
3 mm. wide at the column facet. Calyx elongate ovoid, contracting strong- 
ly below to a very narrow base, and also between the rays into the tegmen; 
it is strongly asymmetrical, swelling more at one side than the other. 
Plates smooth or slightly rugose, flat, with a slight tendency to pitting at 
the angles, but without convexity or median elevation, either in dorsal 
cup or tegmen. Base low, saucer shape, spreading broadly from a very 
small column facet, which is in marked contrast with that of the two pre- 
ceding species. Tegmen very low, not over one-tenth the total height of 
calyx, and almost flat, except for the elevation around the subcentral 
arial opening, which was apparently without a tube. 
