﻿EXPLANATION OF THE PLATES. 



Plate I. 



Fig. 1 : Amphisile sciitala (L.) Gthr. x 2. 



Head. pt: postteniporal (supraclavicular I). 

 sq; pterotic (squamosal). 

 Dorsal cuirass. 1 — 5: upper, dorsal row of plates. 



I — V: lower, lateral row. The line on which the numhers stand corresponds to the 

 inner ridge connected with the vertebral column. 

 T : dorsal spine, 

 scl: supraclavicular (II). 

 cl: clavicular. 



The dotted lines indicate the canals for the lateral line. 

 Dorsal fin. r: interspinous bones forming staj's for the membrane of first dorsal fin. 



Ventral cuirass. 1 — 14: ventral plates. 



I: thickened stripe or rachis of the same. 



s: separate plate between (the fifth) ventral plate and the clavicle. 

 " : upper boundary line of the transparent ventral keel. 



Fig. 2: Posterior part of Amphisile punchilata Biane. x 2. 



Dorsal fin. 1: lateral bony piece of dorsal spine T. 

 t: ventral bony piece of the same. 



R: spinous ray supported by the fourth interspinous bone. 

 Other letters as in Fig. 1. 



Fig. 3: Centrisciis scolopax L., not fully grown specimen, x ca. 2. 



The scales are omitted ; only the larger scutes forming the armour, and the crests on the head 

 are shown. 

 Ventral armour. 1 — 9 : row of paired scutes. 



I— VI: row of unpaired, keeled scutes. 

 Dorsal fin. IV: first spinous ray of the foremost dorsal (absent in Amphisile piincliilata). 



r': first ray (spinous) of second dorsal (absent in Amphisile). 

 Other letters as in Figs. 1 and 2. 



Plate II. 



Fig. 1 : Amphisile scutata. Skeleton, x 2. 



Branchial skeleton, except the urohyal, removed; further the left mandibular suspensorium and 

 bones of the gill-cover, and left supraclavicular (II). Of the dermal skeleton parts of the ventral 



