240 
DESCRIPTION OF THE FOSSILS. 
A. seminiferus. Ph. PI. XXII. fig. 8, 9, 10. Derbyshire ; Holland. 
Head poroso-granulated, mesial lobe bisulcate on the sides, and bituberculated at 
the base ; abdomen with tumid lobes ; ribs roughened with eight or ten unequal promi- 
nent subglobose puncta ; limb not striated. First segment of the middle lobe mucronate. 
A. geramuliferus.Ph.Pl.XXII.fig.il. Holland; Aldstone moor; 
Mendip ; Kildare ; Dublin. 
Each abdominal lobe ornamented by six longitudinal lines of elevated puncta ; the 
transverse furrows undulate the limb ; (the cast is nearly smooth.) I suppose Brong- 
niart’s fig. 12, PI. IV. to represent this species. 
A. truncatulus. Ph. PI. XVII. fig. 12, 13. Florence Court. 
Depressed ; mesial lobe of the head quadrisulcate, bituberculate ; the eyes lunate ; 
limb continuous, truncate, with undulating parallel striae ; six lines of elevated puncta on 
the abdominal lobes. 
A. raniceps. Ph. PI. XXII. fig. 14, 15. Bolland. 
Limb rounded, with six imbricating striae ; eyes oblongo-lunate very minutely reti- 
culated) : surface smooth, head depressed. 
A. globiceps. Ph. PI. XXII. fig. 16 — 20. Bolland ; Kildare. 
Limb quadrate, with four imbricating striae ; eyes lunate on a globular projection ; 
head globular. (This agrees better than any other which I have seen with E. Der- 
biensis of Martin, t. 45 * 1.) 
MISCELLANEOUS CRUSTACEA. 
PI. XXII. fig. 21, 22. Supposed to be a portion of the claw of some 
crustaceous animal. 
PI. XXII. fig. 23, 24. Cypridiform shell. Bolland. 
PI. XXII. fig. 25. Agnostus ? radialis. Ph. Bolland. 
Ribs radiating, with acute puncta ; abdomen mucronate. 
FISHES. 
Ichthyodorulites occur in Northumberland and in Shropshire. Teeth 
are found in Northumberland, at Bristol, Moulton, Richmond, Orton, 
in Tyrone, &c., but the examination of them belongs to M. Agassiz. A 
very extraordinary and beautiful fossil, which I suppose to belong to the 
vertebral division of the animal kingdom, is in the possession of Mr. 
Cooke of Wigton. 
