86 



It has not been found possible to measure the stages, but the 

 record is interesting in that it shows that the Anomura may also 

 take several years to reach a mature condition. Caiman in a letter 

 stated that the last stage of the series is still small in size. The 

 dates of the successive ecdyses are : — 



TABLE V. 



The stage enclosed in brackets for August, 1904, was lost 

 and the date is not given, but to complete the series it has been 

 assumed to have taken place on August 15th. 



Macritra. — The preceding example belongmg to the Anomura 

 gives evidence that ecdyses may be numerous and size apparently 

 only slightly increased thereby. There is a Waddington series 

 of Leander {fabricii) adspersus in the British Museum which appears 

 to indicate that ecdj-ses may take place in rapid succession year 

 after year without any appreciable increase in size taking place. 

 The particulars are given in Table VI. The measurements given 

 are the length of the carapace from the posterior wall of the orbit 

 to the posterior margin. The total length was measured in the 

 case of Nos. 5 and 38, and was found to be 42 and 49 mm. respec- 

 tively. The measurements of the carapace as furnished by ]\Ir. 

 Storrow are given with reference to time in diagrammatic form 

 in fig. 9. From this it will be seen more plamly that there has 

 nevertheless been a gradual increase in size. The ujDright lines 

 refer to the ecdyses when the increase was noted to have taken 

 place, and the intervening dots indicate the ecdyses when no 

 increase in the size of the carapace apparently occurred. If there 

 was an increase at other jDcriods than those stated it was not 

 apparent, for Mr. Storrow wrote with reference to the series that 



