Explanation of Plates. 95 



urp. 1, -2, 3. First, second, and third uropods. 



PI., T. Pleon from end of second segment in lateral view ; telson in dorsal view, 

 on the scale of the uropods and also on that of the mouth-organs. 



PLATE X. (XXXVI.) 

 Byblis anisuropus, n. sp. 



n.s. Line indicating natural size of specimen figured above in lateral view. 



C. Lateral view of head, with bases of antennae. 



a.s. First antenna. 



l.s. , Li., m., mx. 1, mx. 2, mxp. Upper and lower lips, mandible, first and 



second maxillae, and maxillipeds, more highly magnified than the other 



appendages. Enlargement of armature of mx. 1 higher than any of the 



other figures except telson. 

 gn. 1, gn. 2. prp. 2, 3, 4, 5. First and second gnathopods ; second, third, 



fourth and fifth peraeopods, with distal parts of gn. 2, and prp. 3 and 



5 more highly magnified. 



urp. 1, 2, 3, T. First, second, and third uropods ; dorsal view of telson to 

 the same scale, and also on a higher scale than all the other figures 

 except armature of mx. 1. 



PLATE XI. (XXXVII.) 

 Pontharpinia stimpsoni, n. sp. 



n.s. Line indicating natural size of female specimen figured above in lateral 



view. 



C. Dorsal view of head, 

 a.s., a.i. First and second antennae, 

 m., l.i., mx. 1, mx. 2, mxp. Mandible, lower lip, first and second maxillee, 



and rnaxilliped. These parts, with the tip of finger of gn. 2, and the 



telson are magnified on a higher scale than the other appendages, 

 gn. 1, gn. 2, prp. 1, 3, 4, 5. First and second gnathopods ; first, third, fourth, 



and fifth perseopods. 

 urp. 1, 2, 3, T. First, second, and third uropods ; telson on the same scale as the 



limbs, and also on the scale of the mouth-organs, in dorsal view. 



PLATE XII. (XXXVIII.) 

 Tiron australis, n. sp. 



n.s. c? , n.s. ? . Lines indicating natural size of the adjoining figure of male 

 specimen in lateral view, and of an unfigured female specimen. 



a.s., a.i. First and second antennae. 



m., mx. 1, rnx. 2, mxp. Mandible, first and second maxillae, and part of rnaxil- 

 liped. Apex of palp of first maxilla more highly magnified than the 

 other figures. All the mouth-organs more highly magnified than 

 the other appendages. 



gn. 1, gn. 2, prp. 1, 2, 3, 4, 5. First and second gnathopods, and the five 

 perieopods. 



urp. 1, 2, 3, T. First, second, and third uropods, and the telson. Telson 

 further enlarged, but to a lower scale than that of the mouth- 

 organs. 



