30 



PEOP. T. JBFFEET PABKEE ON THE 



37. In front of the first well-developed ray of the pectoral fin (fig. 6, pc.f) is a small 

 bone which probably represents a rudimentary first (preaxial) ray (p. 26). 



38. The innominate, or pelvic bones (figs. 6 and 19, o.in), are very large, and unite 

 with one another by a double symphysis (p. 27). 



DESCRIPTION OF THE PLATES. 



Comjjlete List of 

 A. Foramen for cranial nerves (pro- 

 bably second to fifth). 

 a (in fig. 2). Point at which the mem- 

 brane was ruptured in the speci- 

 men. 

 a.g.T. Anterior gill-rakers, numbered 

 according to the arch to which 

 they are attached. 

 al.s. Alisphenoid. 



ar. Articular. 

 a,zy. Anterior zygapophyses. 



.B. Foramen in subcranial crest. 

 S.cr. Basis cranii. 

 h.o. Basioccipital. 

 hr. i~^ (in figs. 6 and 18). Braclrials. 

 hr. 5 (in fig. 17). Fifth branchial arch. 

 hr.r. Branchiostegal rays. 



c. Centra of vertebrae, numbered in 



figs. 20 and 25. 

 CM. Caudal artery. 

 c.hr. i~*. Cerato-branchials. 

 cl. Clavicle. 

 c.n. Cartilaginous nodules (distal 

 pterygiophores) with which the 

 fin-rays are articulated. 

 cj). ^~^. Copulse (gj. 1, basi-hyal; cp. 3 

 and cf. 5, first and second basi- 

 branchials; cj). 2, cj). 4, and 

 cp. 6-8, interbranchials. 

 CT". Coracoid. 

 ex. Caudal veins. 



d. Dentary. 



Reference Letters. 



ej).br. 1-4. Epibranchials. 

 e.o. Exoccipital. 

 ejJ.o. Epiotic. 

 f.m. Foramen magnum. 

 f.p. Fibrous pads beneath the car- 

 tilaginous nodules of the an- 

 terior fin-rays. 

 fr. Frontal. 



fr. Orbital plate of frontal. 

 f.r. Fin-rays (numbered in figs. 20 



and 25). 



g.c. Gastric caecum. 



k.br. i~^. Hypobranchials. 



h.hi/. Hypo-hyals. 



h.7n. Hyomandibular. 



h.vi K Facet for hyomandibular on outer 



surface of auditory capsule. 

 h.j)!. Hajmal plate. 

 Ji.pr. Haemal process. 



/. Olfactory foramen. 

 «'.%. Inter-hyal. 



i.g.r. Internal set of gill-rakers, num- 

 bered according to the arch to 

 which they are attached. 

 i.m.s. Inter-muscular septa. 

 i.sp. Interspinous bones or proximal 

 pterygiophores (numbered in 

 figs. 20 and 25). 

 Ig. Longitudinal ligament uniting 

 the neural spines and inter- 

 spinous bones. 

 Ig'. Ligament passing from the last 



