176 Addison E. Verrill, 



s, s', and statocyst, o; ib, smaller leg of first pair; ic, third or fourth 

 leg, x 12. By A. E. V. 



Figure 2-2t. Periclimenes americanus. From Bermuda ; 2a, antennule 

 and eye (c) ; s, s', scales; o, ootocyst, x 10; 2b, 2b', scaphocerite (s) 

 and part of antenna ; p, carpocerite ; 2c, eye and ocellus ; 2r, rostrum ; 

 2!', right leg of first pair, x 10; 2!", right leg of second pair, x 10; 

 2!""', leg of fifth pair; 2m", second maxilla; 2n', 2n", 2n'", first, 

 second and third maxillipeds ; nn'", third, more enlarged ; p, pleopod ; 

 2t, telson and u, uropod, x 10; 20, one of the eggs. Original. By 

 A. H. V. and A. E. V. 



PLATE XLVI. 



Figure I. Gnathophyllum americanum; rostrum, eye, etc. x 6; la, anten- 

 nule, x 30; ia', the same, x 12; ib, antenna, x 12; ib', the same, x3o; 

 ib", the opposite antenna; ic, right scaphocerite; ic', the same, left 

 side; id, right third maxilliped, xi2; id', part of the same x 30; 

 h, a plumose hair, more enlarged ; id", hairs of the inner edge, each 

 side of the suture; le, leg of first pair, x 12; if, right leg of second 

 pair, x 12; if, same, left side; c, carpus, x 12; ig, third ambulatory 

 leg, x 12; ih, fifth leg; ih', tip of the same, x 30; ij, uropod, x 12; 

 ik, distal part of telson, more enlarged. Original. By A. E. V. 



Figure 2. Thor floridanus; eye, x 12; 2a, rostrum, seen from above, 

 x 12; 2b, third maxilliped and 2c, its tip, x 30; 2d, third ambulatory 

 leg, x 30 ; 2e, rostrum. Original by A. E. V. 



PLATE XLVII. 



Figure I. Synalpheus minus. Frontal parts ; ib, carpocerite ; la, larger 

 chela; ic, smaller chela of first pair; id, dactyls of third leg; le, 

 dactyls of third leg of variety; if, telson. After Coutiere, his typical 

 form. 



Figure 2. The same ; frontal parts of a Bermuda specimen, not typical. 

 After Coutiere. 



Figure 3. S. townsendii; 3a, frontal parts ; 3b, part of the larger chela ; 

 3c, leg of second pair; 3d, part of telson. After Coutiere. 



Figure 4. Thor floridanus; third maxilliped, x 20; 43, leg of second 

 pair, x 20. Original by A. E. V. 



Figure 5. Hippolyte acuminata; antennule ; sb, third maxilliped ; 5c, 

 end of ambulatory leg, third pair; 5d, larger chela. After Bate, as 

 bidentatus. 



Figure 6. Ogyris alphcerostris ; mandible; after Coutiere. 

 Figure 7. Palamon affinis; mandible, After Bate. 



Figure 8. Processa canaliculata; antennule; 8a, second maxilliped; 8b, 

 first maxilliped. After Bate. 



