112 



W. J. CROZIER. 



Fig. 2 only data from one series, obtained September 21-30, 

 1918. In addition to the individuals involved in Fig. 2, 17 Chro- 

 modoris, or 9.3 per cent, of the total collected at this time, were 



FIG. 6. Showing the character of injuries suffered by the caudal veil, and 

 the results of removal of glands ; at a, probably one gland had been removed ; 

 at j8, a tongue of torn tissue ; original outlines approximately as indicated in 

 dashed lines (X 2/3). See text. 



seen to have the margin of the caudal veil markedly irregular. 

 Instances of this sort are shown in Fig. 6. 



It has nearly always been true in cases of marked irregularity 

 of the caudal mantle that several small glands are situated at 



a It c 



FIG. 7. In a, three small glands (surrounding the location of a shrunken 

 gland?) ; at b, a condition which may result from the subsequent enlargement 

 of a gland much shrunken for a time; at c, the inclusion (?) of a small gland 

 by an enlarging one normally situated (X 2/3). See text. 



points where but one such organ, and that a large one, would 

 characteristically occur. This has been interpreted to mean that 

 if, as the result of injury, one or more glands have been removed, 

 material constantly being transported to these regions is then col- 

 lected into a greater number of small glands. 



