26 



THE VOYAGE OF H.M.S. CHALLENGER. 



Squilla quinquedentata, u. sp. (PL I. fig. 3 ; PL H. fio-. 6). 



Diagnosis. — Dactylus of raptorial claw with five teeth, including terminal cue. Free 

 somites of hind body with submedian dorsal carinse, which are absolute in the four 

 exposed thoracic and the first four abdominal somites, as are also the next pair in the 

 thoracic and first three abdominal somites. Appendages of exposed thoracic legs slender. 

 Lateral margins of first three exposed thoracic somites bdobed. 



Gemral Description. — Eostral plate nearly rectangular, a little longer than wide, 

 with antero-lateral angles rounded, and lateral edges raised into ridges or marginal 



