456 REPORT OF COMMISSIONER OF FISH AND FISHERIES. 



FIGURE 47. The same; pleopod of the second pair, from a male, enlarged twenty di- 

 ameters ; s, stylet, articulated near the base of the inner lamella ; *, 

 distal end of stylet, enlarged sixty-six diameters. 



48. Astacilla grauulata Harger (p. 364); female; dorsal view, enlarged four 

 diameters, natural size indicated by the line at the right ; a, antennula 

 of male ; b, fourth thoracic segment of male ; c, inferior surface of pleon 

 of a male, showing opercular valves; all the figures enlarged four 

 diameters. 



49. The same ; a, flagellum of antenna, enlarged twenty diameters ; a', por- 

 tion of inner margin of the same, enlarged one hundred diameters ; b, 

 one of the first pair of legs, upper surface, enlarged twenty diameters. 



50. The same ; one of the fourth pair of legs, enlarged twenty diameters. 



51. The same ; inner surface of left opercular plate, or uropod, from a female, 



enlarged twenty diameters. 

 (All the figures were drawn from nature by O. Harger. ) 



PLATE IX. 



FIGURE 52. Astacilla grauulata Harger (p. 364); a, maxilliped; m, basal segment; 

 I, external lamella ; b, outer maxilla ; c, inner maxilla ; all enlarged 

 twenty diameters. 



53. Sphserorna quadridentatum Say (p. 368); dorsal view, enlarged five 

 diameters; natural size indicated by the line at the right. 



54. The same ; a, antennula ; b, antenna ; c, pleopod of the second pair, from 

 a male, showing stylet, s, articulated near the base of the inner lamella; 

 all the figures enlarged ten diameters. 



55. Li'mnoria lignorum White (p. 373) ; dorsal view, enlarged ten diameters ; 

 natural size indicated by the line at the right. 



56. The same ; a, antennula ; b, antenna ; c, maxilliped ; d, maxilla of the 

 outer or second pair ; e, maxilla of the inner or first pair ; /, mandible, 

 all enlarged twenty-five diameters ; e', distal end of outer lobe of first 

 pair of maxilla}, enlarged sixty-six diameters. 



57.-^-The same ; a, last segment of pleon, with attached uropods ; dorsal view, 

 enlarged ten diameters; b, uropod with dotted adjacent outline of last 

 segment of pleon, enlarged thirty diameters ; c, first pair of pleopods ; 

 d, pleopod of the second pair, from a male, showing stylet, , articu- 

 lated to the inner lamella ; both figures enlarged twenty diameters. 



58. Cirolana concharum Harger, (p. 378) ; lateral view, enlarged about three 



diameters. 



(Figure 53 was drawn by Mr. J. H. Emerton, 55 by Prof. S. I. Smith, 58 by Mr. J. 

 H. Blake, and the others by O. Harger. ) 



PLATE X. 



FIGURE 59. Cirolana concharum Harger (p. 378) ; dorsal view, enlarged about three 

 diameters. The natural size is shown by the line at the right. 



60. The same ; antennula, enlarged ten diameters. 



61. The same; a, antenna enlarged ten diameters; b, maxilla of the outer or 

 second pair; c, maxilla of the inner or first pair; d, mandible from the 

 right side, inner view ; p, palpus ; m, molar area ; the last three figures 

 enlarged five diameters. 



62. The same ; a, maxilliped from the right side, exterior view, showing, I, 

 external lamella; m, basal segment; 1, 2, 3, 4, 5, segments of the palpus; 

 b, leg of the fourth pair ; both the figures enlarged five diameters. 



63. The same ; uropod from the right side ; inferior view, enlarged five di- 

 ameters. 



64. JEga psora Kroyer (p. 384) ; a, dorsal and b ventral views of a young indi- 

 vidual. The central line indicates the length of > the specimen, natural 



