MUSEUM OF COMPARATIVE ZOOLOGY. 103 



PLATE V. 



Fig. 1. Rhachocaris longirostra. Lateral view of female from Station 330, enlarged 



two diameters. 

 " 2. Rhachocaris Agassizii. Lateral view of female from Station 326, natural 



size. 

 " 3. Rhachocaris sculpta. Lateral view of female from Station 339, natural size. 



PLATE VI. 



Fig. 1. Rhachocaris longirostra. Dorsal view of carapax and anterior appendages 



of the specimen figured on Plate V., enlarged two diameters. 

 " 2. Rhachocaris Agassizii. Dorsal view of the specimen figured on Plate V., 



natural size. 

 " 3. Rhachocaris sculpta. Dorsal view of the specimen figured on Plate Y., 



natural size. 

 " 3*. First maxilla of the right side of the same specimen enlarged six diameters. 

 " 3 b . Second maxilla of the right side of the same specimen, enlarged four 



diameters. 

 " 3°. First maxilliped of the right side of the same specimen, enlarged six 



diameters. 

 " 3 d . Second maxilliped of the right side of the same specimen, enlarged four 



diameters. 



PLATE VII. 



Fig. 1. Pontophilus brevirostris Smith. Dorsal view of adult female, enlarged two 



diameters. 

 " 1*. Lateral view of the carapax of the same specimen, enlarged two diameters. 

 " l b . Dorsal view of rostrum of the same specimen, enlarged eight diameters. 

 " 2. Pontophilus gracilis. Dorsal view of female, enlarged two diameters. 

 " 2*. Lateral view of the carapax of the same specimen, enlarged two diameters. 

 " 2 b . Appendage of the left side of the first somite of the abdomen of the same 



specimen, enlarged eight diameters. 

 " 2°. Appendage of the left side of the second somite of the abdomen of the same 



specimen, enlarged eight diameters. 

 " 3. Appendage of the left side of the first somite of the abdomen of a male taken 



off Martha's Vineyard by the U. S. Fish Commission, Station 1029, en- 

 larged eight diameters. 

 " 3 s . Appendage of the left side of the second somite of the abdomen of the same 



specimen, enlarged eight diameters. 

 " 4. Ceraphilus Agassizii. Dorsal view of female from Station 326, natural size. 

 " 4\ Lateral view of the carapax of the" same specimen, natural size ; a, anterior 



gastric spine ; b, rostrum ; c, orbital spine ; d, antero-lateral angle. 

 " 5. Lateral view of carapax and abdomen of a male from Station 317, enlarged 



two diameters ; a, b, c, d, the same as in fig. 4 a . 

 " 5*. Dorsal view of carapax of the same specimen, enlarged two diameters ; 



a, c, d, the same as in fig. 4*. 



