The following ought to be still added to the List of Errata : 



Page 17, 8th line from below: the anterior prominence of the merus of 2ad maxillipeds measures a little 

 more than one-third the total length of the joint; the joint, indeed, is 4 mm. long, the 

 prominence 1,65 mm. 



Page 17, 2Dcl line from below: for "just half as wide" read "about just as wide". 



Page 23, lo'li line from above, for "between the 3id and 4* pairs" read "between the 4th and 5A pairs". 



Page 25, 2nd line from below: for "the chelae are comparatively shorter and less slender" read "the 



chelae are comparatively shorter and less slender, except the chelae of the ist and 2ad pair, 



which are just as long as in Heniip. crassipes'\ 



