THE OSTEACODA. 



271 



Table K. — Total specimens measured : 85 ? + 62 (J = 14.7. 



Taking the females first :— 0-64< X 1-36 = 0-87 ; 0-87 X 1-36 = 1-18. On morphological 

 grounds the specimen at 0*5 appeared to belong to an earlier stage than those at 0'6 

 and 0'7 ; and by the same growth -factor this stage would have a mean at 047. Further, 

 l*18xl"36=l'60, which is the (maximum o])served) length given by Miiller for female 

 decipieiis. 



In the males there is an overlap of the Stages II. and III. at I'O, such as has been 

 actually observed in some of the smaller species dealt with in this memoir. Two of the 



Fia,-. G. 



four specimens of 10 mm. belonged to Stage II., and two to Stage III. We thus get the 

 means given in the foregoing table; the numbers are (as usual !) too small for accuracy : 

 0"7xl'26=0-88 ; 0-8Sxl*26 = l'lO. As regards decipiens, Miillor gives a (maximum 

 observed) length of 1'3 mm. for tlic male of this species, and l"10Xl"2G = l*38. 



