LARVAE OF DECAPOD CRUSTACEA 397 



Amphionides valdiviae, Zimmer (Fig. 13) 



Zimmer, 1904, Zool. Anz., xxviii, p. 226. 



St. 295. 5° 30' N, 17° 45' W. Depth 25oo-27oo(-o m.), 3 specimens. Length about 20 mm. 



The thoracic region of these specimens is Hke a mass of torn and sodden tissue 

 paper, in which it is impossible to discern any shape and most difficuh to discover the 

 arrangement of the appendages. I have attempted to construct a figure which will give 

 some idea of this extraordinary decapod (Fig. i3«), but the shape given to the thorax is 

 largely conjectural. 



Fig. 13. Amphionides valdiviae, Zimmer. 



a. Side view. d. Maxilla. 



b. Eye and antennule. e. Maxillipede i. 



c. Antenna. 



Zimmer expressed doubt as to whether the carapace was, in life, broad and flat or 

 cylmdrical; but I feel fairly sure that it was not flattened dorso-ventrally. Posterior 

 margin fringed with hairs ; anteriorly with a blunt rostral prominence and a faint median 

 dorsal ridge ending in front in a wedge-like elevation with a small spine in front. 



