PLATE VII. 
Fig. I’uge 
1 . ral(Ponpimx jiriaenx (Agassiz) ; hinder portion of aluloniiiial 
region and nearly complete tail, lateral aspect, two 
thirds nat. size. — L. Lias ; Lyme llegis, Dorset, a. Anal 
tin. c. Caudal tin. d. Pelvic claspers, with spines. 
d^. Second dorsal fin. [P. 1296.] 323 
2. Ilyhodm meditiH, Agassiz ; head and anterior portion of 
trunk, one fifth nat. size. — Ibid, hr. Branchial arches. 
ch. Ceratohyal. dg'. Anterior dorsal tin-spine, hm. 
llyomandibular. l.md. Left ramus of mandible. I.ptq. 
Left ptorygo-(piadrate. na. Neural arcbes and spines. 
not. Position of notochord, Pectoral arch. r. Bibs. 
r.md. Bight ramus of mandible, r.jdq. Bight pterygo- 
ipiadrate. [P. 340 .] 261 
