732 
ON THE BLOOD-VESSELS OF MUSTELUS A.NTARCTICUS. 
cut through immediately caudad of the auriculo-ventricular and arterial 
apertures. 
Sccip., scapula; Cor., coracoid. 
Fig. 29. Through the pectoral fins. 
St., stomach ; Lr., liver ; Orel., oviduct; Som. stk., somatic stalk. 
Fig. 30. Through the middle abdominal region. 
Intest., intestine, with spiral valve; Spl., spleen; Ov., ovary; other 
letters as before. 
Fig. 31. Through the posterior abdominal region. The cardinal veins have united 
with one another immediately cephalad of their union with the caudal vein 
Ini. ren., inter-renal body ; other letters as before. 
Fig. 32. Through the pelvic fins. 
Red., rectum ; Red. gl., rectal gland. 
