[79] DECAPODA FEOM ALBATROSS DREDGINGS. 423 



PLAT E VII. 



Fig. 1 — Nematocarcinus ensiferus Smith. Lateral view of female, from Station 2035, 

 natural size. 



Fig. 2. — Notostomus rolusius, sp. nov. Lateral view of female, from Station 2074, nat- 

 ural size. 



PLATE VIII. 



Fig. 1. — Acanthephyra Agassizii Smith. Lateral view of male, from Station 2034, 

 natural size. 



Fig. 2. — Sergestes arcticus Kroyer. Antennal scale of the right side of a male, from 

 Station 1030, enlarged four diameters. 



Fig. 3. — Sergestes rohustus Smith. Lateral view of male, from Station 893, enlarged 

 two diameters. 



Fig. 4. — Distal extremity of chela of the second perseopod of the left side of another 

 male, from the same station, enlarged twenty-four diameters. 



Fig. 5. — Antennal scale of the right side of the same specimen, enlarged four di- 

 ameters. 



Fig. 6. — Appendage (petasma) of the protopod of the first pleopod of the right side 

 of the same specimen, seen from in front, enlarged eight diameters ; a, 

 point of attachment to the protopod ; b, hooked stylet ; c, d, unarmed 

 stylets ; e, f, g, terminal processes armed with iuvaginated hooks ; h, 

 mesial line where the appendages of the two sides are hooked together. 



Fig. 6a. — Iuvaginated hook at the tip of process /, enlarged one hundred diameters. 



Fig. 66. — Iuvaginated hook from the side of the same process, enlarged one hundred 

 diameters. 



PLATE IX. 



Fig. 1. — Aristeus ? tridens, sp. nov. Lateral view of male, from Station 2036, one-half 



natural size. 

 Fig. la. — Dorsal view of the carapax and anterior appendages of the same specimen, 



one-half natural size. 

 Fig. 2. — Mandible of the right side of female, from Station 2043, ventral and dorsal 



views, natural size. 

 Fig. 3. — First maxilla of the right side of the same specimen, natural size. 

 Fig. 4. — Second maxilla of the right side of the same specimen, natural size. 

 Fig. 5. — Maxilliped of the right side of the same specimen, natural size. 

 Fig. 6. — First gnathopod of the right side of the same specimen, natural size. 

 Fig. 7. — Hepomadua iener, sp. nov. Lateral view of front of carapax and eye of male 



from Station 2099, enlarged four diameters. 

 Fig. 8. — Distal part of third peraeopod of right side of the same specimen, enlarged 



four diameters. 



PLATE X. 



Fig. l.—Hijmenopenceiis microps, sp. nov. Lateral view of female, from Station 2037, 

 enlarged two diameters. 



Fig. 2.—Amalopenceus valens, sp. nov. Appendage (petasma) of the protopod of the 

 first pleopod of the right side of male, from Station 2003, seen from in 

 front, enlarged twelve diameters ; a, oval process over the base of at- 

 tachment to the protopod c ; b, broad lobe projecting over the mem- 

 branous inner part of the appendage. 



Fig. Z.—Benthesiciimiisf sp. indet. Distal part of Aaxilliped of the right side of 

 specimen, from Station 2042, enlarged eight diameters. 



