144 



The external maxillipeds and the legs of the second pair are missing in both specimens. 

 The measurements of the third le^s are indicated in : 



Table B. 



1. 2. 



Merus 



Relative dimensions of ^ Carpus 



Propodus 



Proportion between the length and the width of the merus . 

 Proportion between the length and the width of the carpus . 

 Proportion between the length and the width of the propodus 

 N° 1 Stat. 114; N° 2 Stat. 193. 



These third legs are characteristic, because the propodus which narrows rather much 

 distally, appearing one and a half as wide near the carpal articulation as at the distal extremity, 

 is d e v o i d o f s p i n e s on its posterior margin ; this margin carries, however, especially on the 

 middle third, several rather stout and long setae, and four or five occur also at the distal 

 extremity; a few shorter setae exist on the anterior margin and on the outer side. The dactylus 

 measures almost two-thirds of the propodus, the proportion being as 1:1,7 m the specimen 

 from Stat. 193 and as 1:1,6 in the other; the dactylus is tapering, slender, slightly curved, 

 6-times as long as thick at base. Relative dimensions of the fifth legs in the specimen from 

 Stat. 193: merus 1,7; carpus i; propodus 1,5. Merus 6, 6-times as long as wide, carpus 4-times, 

 propodus 7,3-times; proportion between the length of the dactylus and that of the propodus 

 as 1 : 2,2, the dactylus being almost half as long as the preceding joint. 



In the tube containing the specimen, long 9 mm., from Stat. 114, are lying two eggs, 

 that probably belong to it -, these eggs are 0,57 mm. long. The length of the other specimen 

 is perhaps 9,5 mm. 



Remarks. Atttomate anacanthopus differs from Aut. dolichognatha de Man and Aut. 

 Gardineri Cout. by the propodi of the third and following legs bearing no spines on their 

 posterior margin ; it remains uncertain whether it differs also from the other species by this 

 character, because nothing is known about the presence or absence of spines on their legs. 

 Aut. Salomoni Cout. is distinguished by the longer rostrum, the longer stylocerite, the longer 

 scaphocerite etc. Aut. Talismani Cout., Aut. rugosa Cout. and Aut. Evermanni Rathb. are 

 no doubt also other species. 



Athanas Leach. 



The genus Athanas, no species of which are known to inhabit the coasts of America, 

 was hitherto represented by 10 species: 5 belonging to the Nitcscens group of Coutière, in which 

 the chelae of the first pair are directed straight forward, 5 to the DimorpJius group, in which 

 these chelae with their carpi are directed backward, enclosed by the excavate meri. The first 

 described species, Ath. nitescens Leach, is one of the two that do not occur in the Indopacific; 

 it ranges from . Christiania Fjord (Lat. 6o°) to the Cape Verde Islands, inhabiting the coasts 

 of England and of France, the Mediterranean and the Adriatic seas. Pearson lately recorded 



