PLATE XXI. 



Fig. 1. Uroptychus insignis, Henderson, 



a. Under surface of cephalothorax, 



h. Under surface, showing the abdomen folded naturally, 



c. Left external maxillipede, 



d. Left external maxillipede, front view, . 



Fig. 2. Uroptychus spinimarginatiis, Henderson, 

 a. Left external maxillipede, 



Fig. 3. Uroptychus parvulus, Henderson, 

 a. Left external maxillipede. 



Fig. 4. Uroptychus australis, Henderson, 



a. Frontal region, .... 



h. Left externa? maxOlipede, 



c. Basal joints of right chelipede from above. 



Fig. 5. Uroptychus graciliTnanus, Henderson, 



a. Frontal region, .... 



h. Left external maxillipede, 



Fig. 6. Uroptychus nitidus (A. Milne-Edwards), 

 a. Left external maxillipede, 



Diam. 

 slightly enlarged 



slightly enlarged 



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17(5 



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slightly enlarged 1 79 



X 4 

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slightly enlarged 181 



. X 3 



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. X 2 



