86 



Charles Zeleny. 



Post-spin us thoracic length in millimeters. 

 3.0 4.0 5.0 6.0 7,0 8.0 9 10.0 11.0 



40 



30 



20 



10 



3.0 4.0 5.0 6.0 7.0 8.0 9.0 10.0 11.0 



3.0 



4.0 



60 



50 



40 



30 



5 20 



5.0 6.0 7.0 Ij 8.0 I 9.0 10 11.0 



10 



3.0 



4.0 



5.0 6.0 7.0 8.0 9.0 



Post-spinous thoracic length in millimeters. 



10.0 



60 



50 



40 



30 



20 



10 



11.0 



Fig. 28. 

 Alpheus dentipes. Lower data — Time of moult in days after operation. Upper data — Interval 

 between first and second moult in days. Abscissae are post-spinous thoracic lengths. O = Cutting 

 chela (Cu) alone removed. = Snapping chela (Sn) alone removed. X = Both chelae (Cu -|- Sn) 

 removed. In the upper data the upper line is drawn to fit the first two groups of cases (one chela alone 

 removed) and the lower line to fit the last group (both chelae removed). 



