18 



CARBONIFEROUS ENTOMOSTRACA. 



8. Cypridina Phillipsiana, Jones. Plate II, figs. 4, 5, 9. 



Cypeidina Phillipsiana, Jones, 1870. Monthly Microsc. Journ., vol. iv, p. 185, 



pi. Ixi, fig. 8 a, b. 



— — /. and K., 1871. Trans. Geol. See. Glasgow, vol. iii, 



Suppl., p. 27. 



Carapace subglobose, symmetrically convex (or nearly so), the amount of convexity 

 somewhat variable; broadly oval in outline, with nearly equal ends, except that one 

 (anterior) is notched, above the middle line, with a long, curved, shallow sinus, accom- 

 panied by a decided, though small, gape of the valves. Surface smooth. Muscle-spot 

 oval, radiate, strong on the casts, and visible on the shell ; like that in Baird's Cypridina 

 albomacidaia and C. Adamsii. 



Pig. 4. Length \; height \; thickness \ inch. Proportions 11 : 9 : 6. 



Pig. 9. » ; V y j y >> j> 9:7:7. 



Shells and casts of this species (dedicated to Prof. John Phillips, P.R.S., whose name 

 is so intimately connected with Carboniferous fossils and Geology in general) are not 

 uncommon in the Carboniferous Limestone near Glasgow, and it occurs also in that of 

 Middleton, Co. Cork, Ireland (Mr. Joseph Wright), and of Vise, in Belgium (British 

 Museum). 



Pig. 5. This specimen (small) retains a part of the shell (white and showing reticu- 

 late structure), in grey Carboniferous Limestone, with pieces of Trilobite and a Coral, 

 from Gare, Carluke (Dr. Rankin). This specimen has a minute circular depression, on 

 the junction of the valves, at the postero-ventral curve, probably representing the place 

 of a spine or prickle. 



Pig. 9. Prom a dark-grey limestone at Carluke (Dr. Rankin), retaining part of the 

 whitened shell, and showing a faint, vertical, ventral depression [not visible in the figure]. 



Pig. 4, the largest, is a cast with filmy remnants of white shell at the muscle-spot 

 and edges; also in a dark-grey Hmestone from Carluke (Mr. J. R. S. Hunter). 



To this species we refer a small subquadrate bivalved specimen in ironstone from the 

 Upper Limestone-shale, 290 fathoms below the Ell Coal, at Robroystone, near Glasgow, 

 in Mr. John Young's collection, and formerly catalogued by us as " Entomoconchus," 

 < Glasgow List,' 1871, p. 28; see also 'Geol. Mag.,' vol. ii, p. 277. 



9. Cypridina PIunteriana. Sp. nov. Plate V, figs. 2>a, 3 <5, 2>c. 



Mr. John Young has obtained from the Main Post Limestone (366 fathoms below 

 the Ell Coal) of Braidwood, Carluke, a relatively large specimen (cast) subquadrate in 



