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that are placed abreast and directed obliquely upward and 

 forward. Terminal spine of scaphocerite longer than the 



antennular peduncle. Propodus of third legs rather slender. bituberculatus de Man 

 ó z Posterior margin of 6 th abdominal somite armed with 2, 3, 4 or 

 7 spines or teeth. Basicerite spinous above. 

 c l Merus of third legs unarmed. 



d x Posterior margin of 6 th abdominal somite with an acute tooth 

 at the outer angles. Posterior angles of the telson acute, 



but very short, merus of third legs 4-times as long as wide. bispinosus de Man 

 d„ Posterior margin of 6 th abdominal somite with a spine at the 

 outer angles and one in the middle. Posterior angles of the 

 telson spiniform, though short. Stylocerite longer than the 

 rostrum, reaching beyond the middle of median article. Small 

 chela 3,1-times as long as high, merus of third legs 4,5- 



times as long as wide triacanthus de Man 



d z Posterior margin of 6 th abdominal somite with four teeth, two 

 at the outer angles and two submedian. 

 e 1 Small chela 2,5-times longer than high, merus of third legs 

 3,05-times as long as wide. Lateral frontal teeth obtuse, 



much wider and a little longer than the rostrum . . . quadridens de Man 

 e„_ Small chela 3,42 — 3,46-times longer than high, merus of 

 third legs 3,55 — 4-times as long as wide. Lateral frontal 



teeth as long as the rostrum, obtuse qttadrispinosns de Man 



c„ Merus of third legs armed with 7 or 8 movable spinules. 



d^ Posterior margin of 6 th abdominal somite with an acute spine 

 at the outer angles and with a third that is slightly shorter, 

 in the middle. Posterior angles of telson spiniform, large. 

 Anterior margin of the palm of large chela with one conical 



tooth or tubercle trispinosus de Man 



d„ Posterior margin of 6 th abdominal somite armed with seven 

 acute spines. Posterior angles of telson acute, though very 

 short. Palm of large chela anteriorly with two tubercles, the 



inner tubercle twice as large as the outer septemspinosus de Man 



« 3 Movable finger of the small chela enlarged laterally, more or less 

 spatuliform and excavate. 

 b l Superior angle of basicerite subacute or at most with a small spine. 

 Median part of the posterior margin of the telson wider than the 

 lateral parts in which the spinules are inserted. 

 c\ Carpocerite at most 6-times as long as wide. Anterior pair of 

 spinules of the upper surface of the telson situated near the 

 lateral margins. 



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