144 SICYONIA BENTHOPHILA. 



aud high, reaching to the end of the l^* joint of the 

 antennular peduncle, 2^/2-times as long as high in the 

 middle; upper margin with 3 teeth, all on the rostrum 

 itself, lower margin with one tooth at the end, rostrum 

 truncate between the tooth at the end of the lower margin 

 and that at the end of the upper. 



Abdomen carinate as in the other species, the carina of 

 the 1st tergum rising into a small, acute tooth. Sixth somite 

 once and a half as long as the 5^^ and almost twice as 

 long as broad. Abdominal somites quite smooth, not sculp- 

 tured at all, though one or two transverse furrows on the 

 pleura are more or less distinct; pleura rounded or obtuse 

 at their posterior angle, no tooth at the rectangular, postero- 

 inferior angle of the Q^^ somite. Telson longer than 6*^ so- 

 mite, with a pair of small spines near the tip. 



Eyes shorter than the rostrum, cornea black. 



Thoracic legs slender. First pair bispinose; carpus of 

 2""^ pair 15-times as long as thick in the middle, fingers 

 one fifth longer than the palm. Carpus of h^^ pair 15-times 

 as long as thick in the middle, twice as long as the pro- 

 podite and 3-times as long as the dactylus. 



Length of the only specimen (9) that was collected l?,?""""-. 



19. Gennadas davicarpus, n. sp. 



Station 128. Lat. 4°27' N.; long. 125°25'7 E. Depth 



1645 M. Prom 700 M. to surface. 

 Station 141. Lat. 1°0'4 S. ; long. 127°25'3 E. Depth 



1950 M. From 1500 M. depth to surface. 

 Station 230. Lat. 3°58' S. ; long. 128°20' E. From 



a depth of 2000 M. to surface. 



Carapace with the rostrum measuring in the male just 

 one third the length of the abdomen, in the female a 

 little more. Carapace and abdomen as in Gennadas borealis 

 Rathb. (Rathbun, Decapod Crustaceans North West Coast 

 of North America, 1904, p. 147), but the rostral tooth is 

 situated just behind the level of the orbital margin and 



Notes from tlie Leyden Miuseum, Vol. XXIX. 



