XX LIST OF PLATES. 



262. The Red Crab, Cancer productns Randall ; male, natural size 771 



Bra-wing by n. L. Todd, from No. 2529, TJ. S. National Museum. San Francisco, California, H. Hemphill. 



263. The California Rock Crab, Cancer antennariua Stimpaon ; natural size 771 



Drawin^^ by H. L. Todd, from No. 20^3, U. S. National iluseum. California, William Stimpson. 



264. The Stone Crab, Moiippe mercenarius Gihhes; male, about four-fifths the natural size 778 



DraTvin/T; by H. L. Todd, from specimen obtained at Charleston, South Carolina. 



265. The Green Crab, Carclnus mcenas Leach; slightly enlarged 774 



Drawing by J. H. Emerlon, from specimen obtained at Wood's IIoll, Massachusetts, 1882. 



26G. The Lady Crab, Plalyoniohus ocetlatus Latreille ; about one-third larger than natural size 774 



Drawing by J. H. Emerton, from specimen obtained at Wood's Uoll, Massachusetts, 1882. 



267. The Common Edible or Blue Crab CalUiiecies hastatus Oidway ; male, somewhat smaller than natural size. 775 



Drawing by J. H. Emerton, from specimen obtained at Wood's Holl, Massachusetts, 1882. 



268. The Kelp Crab, EpiaUiis productns Randall ; female, natural size 778 



Drawing by H. L. Todd, from No. 2139, D. S. National Museum. Pacific coast of the United States, Dr. Suctley. 



269. Fig. 1. The Fiddler Crab, (Jein.smi(Sj)»(/i7a«or Latreille; male, slightly enlarged 763 



Fig. 2. The Oyster Crab, Pinnotheres ostreum Say; male, enlarged four diameters 765 



Fig. 3. The Mud Crab, Panopeus depressus Smith ; male, natural size 772 



Figs. 4, 5. The Spider Crabs. Fig. 4, Libinia emarginata Leach; male. Fig. 5, Libinia diibia Edwards; 



male. Both three-fourths natural size - 778 



Fig. 6. The Sand Bug or Bait Bug, Bippa talpoida Say ; enlarged about two diameters 779 



Fig. 7. The Hermit Crab, Eupagurus bernliardus Brandt; about natural size 780 



Drawings by J. H. Emerton. 



270. The Spiny Lobster or Rock Lobster, PanuUrus interruptus Randall; somewhat smaller than natural size. .. 780 



Drawing by H. L. Todd, from specimen obtained on the coast of California. 



271. The American Lobster, Homarus americanus Edwards; male, much below natural size 781 



Drawing by J. H. Emerton, from ajtecimen obtained at Eastport, Maine, 1882. 



272. The River Cray-fish, Cambarus affinis Erichson ; one and one-half times the natural size 812 



Drawing by n. L. Todd, from specimen obtained at Ilavre de Grace, Maryland. 



273. The Southern Shrimp, Pereffitts .se/i/efu.s Ed w ards; about one-fifth larger than natural size 8i?l 



Drawing by J. H. Emerton, from specimen obtained on the coast of Louisiana. 



274. The Mantis Shrimp, Squilla empusa Say ; natural size 823 



Drawing by H. L. Todd, from No. 3752, U. S. National Museum. Wood's Holl, Massachusetts, V. N. Edwards. 



275. Fig. 1. The Common Shrimp, Crangon vulgaris Fabr. ; male, natural size 816 



Fig. 2. The Common Prawn, Palcemonctes vulgaris Stimpson; mtile, enlarged one and one-half diameters. 



Fig. 3. The Deep-water Prawn, Pandalus Monlagai Leach; slightly smaller than natural size. 

 Fig. 4. The Beach-Flea, Orchestia agilis Smith; male, enlarged five diameters. 

 Fig. 5. The Scud, Gammaruslocusta Goa^A; male, enlarged two diameters. 



Fig. 6. The Boring Amphi pod, Chelura terebrans FhiWipi; enlarged about fourteen diameters. 

 Fig. 7. The Gribble, Llmnoria lignornm White ; enlarged ten diameters. 

 Fig. 8. The Salve Bug, JEga psora Krijyer; young specimen, enlarged three diameters. 

 Fig. 9. The Horse-Shoe Crab, Liinulus Polgphemus Latreille; much smaller than natural size. 

 Drawings by J. H. Emerton, S. I. Smith, and 0. Hargor. 



276. Marine Annelids, used as bait 832 



Figs. 1,2,3. Nereis pelagica LinncS. Fig. 1, larger figure, female ; smaller, male; natural size. Fig. 2, bead. 



F'ig. 3, proboscis, enlarged. 

 Fig. 4. Nereis limbata Ehlers; male, anterior part of body, head, and extended proboscis, enlarged. 

 Figs. 5, 6. Diopaira cuprea Clapar^de. Fig. 5, head and anterior part of body, showing part of the branchi*, 



side view. Fig. 6, ventral view, showing the mouth open and jaws thrown back, enlarged. 

 FlGS.7, 8, 9. Clgmenella iorquataVeiriW. Fig. 7, entire animal, side view, natural size. Fig. 8, head and 



extended proboscis, front view, enlarged. Fig. 9, posterior and caudal segments, dorsal view, 



enlargi'd. 

 Drawings mostly by J. H. Emerton. 



277. Fig. 1. The Sea-Cucumber, Pentactaf rondosa J:Bgev, much smaller than natural size 840 



Fig. 2. The Green Sea Urchin, Slrongijloccnlrotus Drijbachiensis A. Ag. ; side view, much smaller than natural 



size. 

 Fig. 3. The Sand Dollar, EcUnarachnius parma Gray; upper surface, with the spines mostly removed, 



natural size; a, ambulacral zones; 6, inter-ambulacral zones. 

 Fig. 4. The Star-fish or "Five Finger," Aslerias Forbesii Verrill ; much smaller than natural size. 

 Figs. 5,6, 7. The Jelly Fishes. Fig. 5, Zi/godactgia Groinlandica Agassiz; profile view,one-half natural size. 



Fig. 6, Aureliaflavifhila Peron and Le Sueur; dorsal view, about one-fourth natural size. Fig. 7, 



Daotylometra quinquecirra Agassiz ; lateral view, one-fourth natural size. 



