MUSEUM OF COxMPAKATIVE ZOOLOGY, 



31 



The only specimen carrying eggs is the one above referred to as taken off 

 the mouth of Chesapeake Bay. In this specimen the eggs are in an early stage 

 of development, are nearly spherical and .65 to .70 mm. in diameter, and are 

 carried in a mass behind the first pair of abdominal appendages, and between 

 the appendages of the second and third pairs, the mass being principally sup- 

 ported by the first pair, very slightly by the third, and not at all by the fourth 

 and fifth. 



Five specimens give the following measurements in millimeters : — 



* In the second, third, and fourth columns the measurements of the first pair of 

 legs are taken from the right leg ; in the first and last columns, from the left. In the 

 sp.'ciiiien of which the measurements are given in the fourth column, both legs of 

 the first pair are present and the left one is a little shorter than the right and gives 

 the following measurements : length, 153 mm. ; merus, 47 ; carpus, 31 ; chela, 48 ; 

 dactylus, 28. 



