THE GEOLOGHST. 



Lima Hermannia. 

 Plicatula spinosa. 

 Lima acuticosta. 

 Pecten priscus. 

 Pecten vellatus. 

 Gryphsea cymbium. 

 GrypliEea obliqua. 

 Pholadomya anibigua. 

 Pholadomya decorata. 

 Cardiura cucullatura (Opis). 

 Pleuromya scotica. 

 Pleuromya unionides. 

 Lima acuticosta. 



Hippopodium ponderasum (youag). 

 TJnicardium cardioides. 



Gresslya anglica. 



Area trunoata. 



Area Buebmanni. 



Area elongata. 



Leda rostralis. 



Astarte Psilonoti ? 



Modiola scalprum. 



Pinna folium. 



Pinna tetragona. 



Troehus anglieus. 



Pleurotomaria ? 



Ammonites rarieostatus. 



Ammonites Jamesonii. 



Belemnites Isevigata, var. clavatus. 



Since tbe discovery of the above-named fossils by Captain Bedford, 

 Mr. J. Thomson, of Glasgow, has visited the island of Pabba, where he 

 found T. punctata, Sp. Walcotti, Bh. tetraliedra, and another species, 

 which I was unable to determine. He also found in the Bay of 

 Lussay, four miles from Bradford, in the island of Skye, some ex- 

 amples of Sp. Walcotti. 



Scottish Jurassic BracTiiopoda. 



1. Spieifeeiis'a. rosteata, Scliloth. sp. 1822, ^Z. xx.iv.Ji^. 1; Bav. 

 Mon. p. 20, pi. 2, fiffs. 1-21; pi. ^,fiff. 1. Of this species, Captain 

 Bedford found one perfectly characterized specimen in the Bay of 

 Caisaig, Mull. 



2. Spieieeiiin"a Walcotti, Sow. 1823,^?, xxh.Jlffs. 2, 3; Bav. Mon. 

 p. 25, pin, Jiffs. 2,3. 



This is a common form in Scottish liassic deposits, although rarely found perfect. It was 

 found by Captain Bedford in the Bay of Caisaig, Mull. Mr. J. Thomson obtained it was 

 also from the Middle Lias in the Bay of Lussay, four miles from Bradford, in the island 

 of Skye, and again, from the island af Pabba. It varies considerably in size and in the 

 number of its ribs, but is entirely similar to those found in Englaud. 



3. Spieifeeina oxypteea, Buv. 1843, pi. xxiv, ^flq. 4. Spirifer 

 oxypterus {Buvignier), Mem. de la Soc. Bhilom. de Verdun, torn. ii. 

 p. 14, pi. 8, fig. 8 ; Geol. des Ardennes, p. 534, pi. 5, Jig. 5 ; Bav. 

 Annals and Mag. of Nat. Hist. p. 264,^/. 15, figs. 5, 6, 7, 1852. 



Shell variable in shape, transverse and obscurely subrhomboidal ; valves convex; beak 

 more or less produced and incurved ; hinge-line as long as the greatest width of the 

 shell ; cardinal angles tapering into acute points ; area subtriangular and of moderate width ; 

 fissure partly arched over by a pseudo-<3eltidium. In the dorsal valve the mesial fold is 

 formed of a single rib, to which corresponds a sinus in the ventral one. Each valve is, 

 in addition, ornamented with from eight to twelve simple ribs, aud the surface, besides 

 being punctured, is covered vnVa delicate spines. Dimensions variable. Our Scottish 

 example measured nine lines in length by sixteen in width. 



This species is here mentioned for the first time as a British fossil, and was discovered 

 by Captain Bedford in the Bay of Caisaig, island of jNIuU. The Scottish specimen above 

 described, agrees otherwise with M. Buvignier's type. 



4. Teeebratula punctata. Sow. 1843, pi. xxiv. figs. 6, 7; Bav. 

 Mon. p. 45, pi. 6, figs. 1-6. 



Tliis is a common shell in the Middle Lias of the Bay of Caisaig, island of Mull, 



