1898—1902. No. 18.] 
CRUSTACEA. 45 
Fig. 1. 
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ane 
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Fig. 1. 
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» 3. 
” 4. 
” 5. 
” 6. 
” 7. 
5 8: 
» 9 
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Fig. 1. 
» 2 
» 3. 
» 4 
Fig. 5. 
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» 10. 
Fig. 11. 
a AD 
» 13. 
a 14 
15. 
Pl. VI. 
Idomene coronata (Scott). 
Adult ovigerous female, dorsal view. magnified 104 diameters. 
Rostral plate with left anterior antenna. 
Posterior antenna. 
Mandible with palp. 
Maxilla. 
Anterior maxilliped. 
Posterior maxilliped. 
Leg of ist pair. 
Leg of 2nd pair. 
Leg of 4th pair. 
Leg of last pair. 
Pl. VII. 
Amphiascus latifolius, G. O. Sars. 
Adult ovigerous female, dorsal view, magnified 124 diameters. 
Rostrum with left anterior antenna. 
Posterior antenna. 
Mandible with palp. 
Maxilla. 
Anterior maxilliped. 
Posterior maxilliped. 
Leg of ist pair. 
Leg of 3rd pair. 
Leg of last pair. 
Left caudal ramus, with adjoining part of urosome. 
Inner ramus of 2nd pair of legs in male. 
Pl. VI. 
Amphiascus congener, G. O. Sars. 
Adult female, dorsal view, magnified 124 diameters. 
Rostrum with right anterior antenna. 
Leg of 1st pair. 
Leg of last pair. 
Amphiascus polaris, G. O. Sars. 
Adult ovigerous female, dorsal view, magnified 124 diameters. 
Rostrum with left anterior antenna. 
Leg of 1st pair. 
Leg of last pair. 
Inner ramus of 2nd pair of legs in male. 
Leg of last pair of same. 
Amphiascus brevis, G. 0. Sars. 
Adult ovigerous female, dorsal view, magnified 124 diameters. 
Rostrum. 
Anterior antenna. 
Leg of 1st pair. 
Leg of last pair. 
