Catalogue of the fossil fishes in the British Museum (Natural History) .. . «. I PtericlntKys l:i Asterolepis and. Pteri cTnthys PLATE VI. Page 1. Pterichthys testudinarius, Ag.; dorsal (in part visceral) aspect of trunk and tail.—Lower Old Red Sandstone ;Lethen Bar. Anterior ventro-lateral. d. Dor-sal fin. /. Caudal ridge-scales, Median Posterior ventro-lateral. [P. 5053.] 217 2. Pterichthys productus, Ag. ; ventral aspect.—Ibid. Extralateral (operculum). Other letters as above. [50111.] 218 3. Pterichthys oblongus,
Catalogue of the fossil fishes in the British Museum (Natural History) .. . «. I PtericlntKys l:i Asterolepis and. Pteri cTnthys PLATE VI. Page 1. Pterichthys testudinarius, Ag.; dorsal (in part visceral) aspect of trunk and tail.—Lower Old Red Sandstone ;Lethen Bar. Anterior ventro-lateral. d. Dor-sal fin. /. Caudal ridge-scales, Median Posterior ventro-lateral. [P. 5053.] 217 2. Pterichthys productus, Ag. ; ventral aspect.—Ibid. Extralateral (operculum). Other letters as above. [50111.] 218 3. Pterichthys oblongus, Ag. ; ventral aspect.—Lower Old Eed Sandstone; Gamrie. Anterior mediandorsal, x. Caudal fin. Other letters as above. [P. 664 a.] 220 4. Ditto ; ventral aspect.—Lower Old Eed Sandstone; Lethen Bar. a. Anconeal. c. Central. 7. Lateral, m. Mar-ginal, p. Pineal (;i os dubium ). Terminal. Other letters as above. [50107.] 221 5. Bothriolepis major (Ag.); cranial shield, dorsal aspect.— Upper Old Eed Sandstone; Alves, near Elgin, occipital, Median occipital,
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