52 THE PHOSPHORESCENT ORGANS IN PORICHTHTS. 



d dorsal row. 



e = fibrous connective tissue. 



/ = frontal row. 



g = gular row. 

 ga = gastric row. 



I in fig. 1 = lateral row; in figs. 3, 4, 5, 6 and 7 = lens. 

 md = mandibular row. 



o = occipital row. 

 oo = orbitoral row. 

 op = opercular row. 

 p = pectoral row. 

 pg = pigment. 

 pi = pleural row. 

 po = postorbital row. 



r = reflector. 



s = scapular row. 

 sb = sub-branchial row. 

 so = sub -opercular rows. 



v = ventral row. 



FIG. 1. Left side of Porichthys, showing arrangement of phosphor- 

 escent organs. X |. 



FIG. 2. Ventral view of Porichthys, X |. 

 FIG. 3. Section of frontal organ, X 235. 

 FIG. 4. Section of upper opercular organ, X 235. 

 FIG. 5. Section of pleural organ, X 235. 

 FIG. 6. Section of gastric organ, X 235. 

 FIG. 7. Section of outer anal organ, X 235. 



