PLATE VII. 
Fig. Page 
1. Palceospinaxprisons (Agassiz); hinder portion of abdominal 
region and nearly complete tail, lateral aspect, two 
thirds nat. size.—L. Lias ; Lyme Begis, Dorset. a. Anal 
fin. c. Caudal fin. d. Pelvic claspers, with spines. 
cl 2 . Second dorsal fin. [P. 1296.] 323 
2. Eybodus medius, Agassiz; head and anterior portion of 
trunk, one fifth nat. size.—Ibid. hr. Branchial arches. 
ch. Ceratohyal. ds l . Anterior dorsal fin-spine. Jim. 
Hyomandibular. l.md. Left ramus of mandible. l.ptq. 
Left pterygo-quadrate. na. Neural arches and spines. 
not. Position of notochord, pet. Pectoral arch. r. liibs. 
r.md. Bight ramus of mandible, r.ptq. Bight pterygo- 
quadrate. [P. 340.] 264 
