456 EDPORT OF COMMISSIONER OF FISH AND FISHERIES. 



FiGUKE 47. — The same ; pleoporl of the second pair, from a male, enlarged twenty di- 

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

 distal end of stylet, enlarged sixty-six diameters. 



48. — Astacilla grauulata Harger (p. 3(34); female; dorsal view, enlarged four 

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

 of male ; h, fourth thoracic segment of male : c, inferior surface of pleon 

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

 diameters. 



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

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

 one of the first pair of legs, ujiper 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 natui'e by O. Harger.) ^ 



PLATE IX. 



Figuke52. — Astacilla granulata Harger (p. 3G4); a, maxilliped; m, basal segment; 

 1, external lamella ; h, outer maxilla ; c, iuner maxilla ; all enlarged 

 twenty diameters. 



53.— Sph^roma quadridentatum Say (p. 368); dorsal view, enlarged five 

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



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

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

 all the figures enlarged ten diameters. ^ 



55. — Limnoria hgnorum 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 ; c, maxilla of the inner or first pair ; /, mandible, 

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

 pair of maxilliB, enlarged sixty-six diameters. 



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

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

 segment of i^leon, enlarged thirty diameters ; c, first pair of pleopods ; 

 (7, pleopod of the second pair, from a male, showing stylet, s, articu- 

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



5S._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. Blahe, and the others by O. Harger.) 



PLATE X. 



FiGUEE 59.— Cii-olana 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; I, maxilla of the outer or 

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

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

 enlarged five diameters. 



62. — The same ; a, maxiQiped 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 figiu-es enlarged five diameters. 



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

 ameters. 



64. — ^ga 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 



