PLATE XXXIV. 



Class PISCE S -continued. 

 THE SKATE continued. 



FIG. 1. SKELETON : VENTRAL VIEW. From a young specimen of Eaia latis. 



x f. 



r. c. rostral cartilage: r. rostrum: n. nasal capsule: l.^-l^ labial 

 cartilages : an. antorbital cartilage : p. p. palato-pterygoid (or 

 palato-quadrate, or upper jaw) : m. mandibular (or Meckelian, 

 or lower jaw) : s, spiracular cartilage : h. hyoid arch : km. 

 hyomandibular : a. auditory capsule : hb. x first hypobranchial : 

 J. 1 -^ 6 first to fifth branchial arches: &. basibranchial plate 

 with anterior cornua : v. vertebral plate : p. propterygium : 

 ms. mesopterygium : mt. metapterygium : p. pubic portion of 

 the pelvic girdle : pr. prepubic process : i. iliac process : 

 a. 1 , a 2 , acetabular facets. 



FIG. 2. VERTEBRAL COLUMN : LONGITUDINAL SECTION, x f. 



c. centrum : n. neural process : i. inter-neural plate : s. neural spine : 

 /- 1 ,/! 2 foramina for the anterior and posterior roots of the 

 spinal nerves. 



FIG. 3. VERTEBRA : BODY REGION, x . 



c. centrum : t. transverse process : r. rib : n. neural process : i. inter- 

 neural plate : s. neural spine. 



FIG. 4. VERTEBRA : TAIL REGION, x . 



c. centrum : n. neural process : s. neural spine : h. haemal process : 

 h. s. haemal spine. 



FIG. 5. LEFT ICHTHYOPTERYGIUM : VENTRAL VIEW, x f . 



c. coracoid portion of the pectoral girdle : p. propterygium : ms. meso- 

 pterygium : int. metapterygium. 



