34 BULLETIN OF THE 
PLATE VIII. 
A. Side view of skull, quadrato-pterygoid, hyomandibular, and Meckel’s carti- 
lage, mk, natural size ; lettering as in Plate VII.; dr-r, branchial rays; ¢-hy, cera- 
tohyal; ¢p, trabecular process of pterygo-quadrate; y, ligament attaching trabecular 
process to the skull; g-p, quadratic process of pterygo-quadrate ; «2, orbito-nasal 
pores. 
B. Side view of quadrato-pterygoid, hyomandibular, ete., at rest in position 
against the skull. All natural size. 
PLATE IX. 
Branchial cartilages and meckelian, lower view, size of nature. mk, Meckel’s 
cartilage; b-hy, basihyal; c-hy, ceratohyal; 47-r, branchial rays; 6-47, basibran- 
chials ; 4-47, hypobranchials ; c-ér, ceratobranchials ; e-dr, epibranchials ; p-dr, 
pharyngobranchials. 
PLATE X. 
Vertebre : 1, side view of section from middle of body ; 2, longitudinal, and 4, 
transverse section of same; 3, longitudinal section from back of head (reversed), 
all twice nat. size. 5, nerve aperture showing the calcareous lump at the side; 
m, neurapophysis ; 7s, interspinous process ; zc, neural canal; ch, notochord. 
PLATE XI. 
1. Pelvis, upper view, 2; nat. pz, pubic; 7, iliac ridge; dp, basipterygium. 
(Reversed.) 
2. Pectoral cartilages. er, coraco-scapular; prp, propterygium ; msp, meso- 
pterygium ; mfp, metapterygium. 
PLATE XII. 
Pelvis and ventral cartilages from beneath: c/, cloaca; ad-p, abdominal pores ; 
wa, urethral aperture. Size 44 nat. 
PLATE XIII. 
Cartilages of dorsal and anal fins, $ nat.: aa, radials of dorsal; 4d, radials of 
anal; cc, anterior radials of caudal. 
PLATE XIV. 
1. Tail with cartilages exposed, ;’; nat. 
2. Tip of tail, ? nat. 
