. A catalogue of the collection of Cambrian and Silurian fossils contained in the Geological Museum of the University of Cambridge. Paleontology; Paleontology. ARENIO OR SKID DAW GROUP. 23 Case and Column of Drawers. G case Gi G case Gi Gi Gi Gi Gi case Gi Gi Gi Gi Gi Reference to McCoy's Synopsis : and Figures of Ogygia. Asaphus. Names and References; Observations, &c. 2Eglina caliginosa, ib. (Mem. Geol. Surv. Vol. m. p. 318, pi. 11 A, fig. 10). The genus is known by its large eyes covering the cheeks. iEglina Boia, Hicks. A small smooth species, the head and tail like Agnostus.
. A catalogue of the collection of Cambrian and Silurian fossils contained in the Geological Museum of the University of Cambridge. Paleontology; Paleontology. ARENIO OR SKID DAW GROUP. 23 Case and Column of Drawers. G case Gi G case Gi Gi Gi Gi Gi case Gi Gi Gi Gi Gi Reference to McCoy's Synopsis : and Figures of Ogygia. Asaphus. Names and References; Observations, &c. 2Eglina caliginosa, ib. (Mem. Geol. Surv. Vol. m. p. 318, pi. 11 A, fig. 10). The genus is known by its large eyes covering the cheeks. iEglina Boia, Hicks. A small smooth species, the head and tail like Agnostus. iEglina binodosa, Salter (Mem. Geol. Surv. VoL in. p. 317, pi. 11 B, fig. 3. Decade XI. PL 4, fig. 1—6). Two tubercles on the third body segment. -ffiglina grandis, id. (Mem. Geol. Surv. Vol. in. p. 317, pi. 12, fig. 11). Two inches long; with rounded tail and granulated surface to head. Ogygia Selwynii, id. (Mem. Geol. Surv. Vol. in. p. 313, pi. 11b, fig. 5). The most character- istic trilobite of the Arenig group; and the first one found by Prof. Sedgwick in 1843. Ogygia peltata, id. (Mon. Brit. Tril. 1865, pi. 25* fig. 2). A large fine species, resem- bling much the great trilobites of this genus in the slates of Angers. (0. Desmaresti, &c.) Ogygia -, sp. long narrow axis to tail. Ogygia bullina, id. (Mon. Brit. Tril. ib. fig. 1). The glabella is much swelled in front and narrowed behind. Asaphus solvensis, Hicks MSS. A small spe- cies with smooth tail-piece. Asaphus Menapiae, Hicks (undescribed). A large species, with smooth tail-piece. A saphus be- comes abundant in the Arenig group. Asaphus, sp. with ribbed tail. MOLLUSCA- Strophomena, sp. fine striae. Lingula petalon, Hicks MSS. Numbers and Localities. Ty Obry, Portmadoc (abun- dant), Mr. Ash. b. 350, 351. (Mr. Homfray.) a. 297, Whitesand Bay, St. David's. (Dr. Hicks.) W. of Stiper Stones, Shelve. (Mr. Lightbody.) a. 53, Whitesand Bay, St. David's. (Dr. Hicks.) a. 54, W. of the Stiper Stones. (Mr Lightbody.) a. 55,
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