Wall of the Body-cavity of Vertebrates. 

 Table I — continued. 



235 



Segmental 

 tubes. 



Sub-Order Selachoidei — eout. 



Fain. 5. Scylliidae. 



Scyllium canicula, L., 7 

 cases (E. J. B.) 



Ditto, <? (Bridge) 



Ditto, £ (Alai-shall and Hiu-st) 



Ditto, 2 , 12 cases (E. J. B.) . . 



Ditto, 2 (Bridge) 



Ditto, ? (Marshall and Hurst) 



Ditto, ? jav., (ditto) 



Scyllium stellare, L 



Rristiurusmelanostomus,~BomLip. 

 Fam. 6. Cestraciontidae. 



Cestracion philippi, Lacep., 2 . 

 Fam. 7. Spinacidae. 



Centrina salviani, Kisso, 2 .. 



Centrophorus granulosus, Bl. 

 Schn 



Ditto, S juv • 



Seymnus lichia, Cuv 



Acanthias vulgaris, Eisso 



Ditto, 12 " foetus (Bridge) 



Spinax niger, Bonap., <J 



Ditto, 2 



Fam. 8. Rliinidae. 



Rhina squatina, L , 



(Fam. 9. Pristiophoridae.) 



Sub-Order Batoidei. 



(Fam. 1. Pristidae.) 

 Fam. 2. Rhinobatidse. 

 Rhinchobatus djeddensis, 



Forsk., 2 



Rhinobatus granulaius, Cuv. .. 

 Fam. 3. Torpedinidae. 



Torpedo narce, Kisso 



,, marmorata, Eisso .... 

 Hypnos sv.bnigrum, Dum., $ .. 



Narcine brasiliensis, Olf 



Fam. 4. Rajidae. 



Raja clavata, L 



,, maculata, Montag., 10 



cases (E. J. B.) 



punctata, Eisso 



„ miraletus, L 



,, batis, L 



... marginata, Lacep 



,, blanda, Holt and Calder- 



Tvood 



Fam. 5. Trygonidae. 



Trygon brucco, Bonap 



„ pastinaca, L 



Fam. 6. Myliobatidse. 



Myliobatis maculata, Gray, 2 

 „ sp., 2 jut 



Open. \ Closed. 



Abdominal pores. 



Present. 



Absent. 



+ (5 cases) 



+ (6 cases) 



(or + ) 

 (or +5 



(2 cases) 

 (6 cases) 



(or -) 



