542 REPORT OF COMMISSIONER OF FISH AND FISHERIES. 
Plate VII. 
Echinorhynchus agilis, Rudolphi. 
Fig. 70. Optical section of male, from Roccus americanus, X about 27 diameters. 
Figs. 71-72. Fig. 71, large Look from proboscis; Fig. 72, embryo of same; X 200. 
JSchinorhynchus serrani. 
t 
Fig. 73. Specimen from peritoneum of Serranus atrarius, X 6. 
Fig. 74. Anterior of same, X about 16; a, epidermis of anterior end removed and 
turned to one side; b, epidermis still in place; c, proboscis retracted 
within it's sheath ; d, lemniscus; e, sheath of proboscis. 
Fig. 75. Portion of epidermis, X 200. 
Figs. 76-79. Hooks from proboscis, same enlargement, viz, about 200; 76, basal; 77, 
median and antero-median ; 78, apical ; 79, basal. 
Echinorhynchus sagittifer, Linton. 
Fig. 80. Longitudinal section of body at base of proboscis sheath, X about 200. 
Specimen from peritoneum of Paralichthys dentatus. Sections made from 
specimen killed with Perenyi’s fluid and stained with Grenacher’s borax 
carmine ; a, outer, b, inuer muscular layer of the proboscis sheath ; c, 
nucleus of intra-fascicular substance of retractor muscle of proboscis; 
d,d, cuticle; e, e, outer layers of subcuticula; /,/, inner layer of subcu- 
ticula, with radial fibers but no vascular spaces; g,g, circular muscle 
layer; h, h, longitudiual muscle layer; i, i, homogeneous substance 
occupying the body cavity ; h, one of the ventral spines; Z, l, ovarian 
masses. 
Echinorhy ncli us odon taspidis. 
Fig. 81. Anterior end of specimen from Carcharias litloralis, X 12; a , a, lemnisci ; b, 
invaginated portion of body ; c, proboscis retracted within its sheath ; 
d, retractor muscle of proboscis. 
Fig. 82. Hooks from proboscis, X about 200. 
Sketches by the author. 
PLATE VIII. 
Echinorhynchus car chari ce. 
Fig. 83. Posterior end of individual figured on previous plate, optical section, show'- 
ing uterus crowded with embryos, somewhat diagrammatic, X 24. 
Fig. 84. a, Ovarian mass from body cavity ; b, b, embryos ; X about 200 diameters. 
Echinorhynchus proteus, Westrumb. 
Fig. 85. Proboscis of specimen from Roccus lineaius , X about 100 diameters. 
Fig. 86. a,h, Hooks from tumid part of proboscis; c, from near base, X about 200 
diameters. 
Fig. 87. Posterior end of male, treated with potassic hydrate to make transparent ; 
a, a, testes; &, prostatic glands ; c, ejaculatory duct; d, bursa. 
Fig. 88. Male with abnormal head ; a, granular substance filling the oval space. 
There was no trace of proboscis or bulla in these degenerate individuals, 
unless the oval body represents the latter ; b, everted bursa. 
Echinorhynchus acus, Rudolphi. 
[Continued from Plate 1.1 
Fig. 89. a, Cuticle; b, c, d, outer layers of subcuticula; e, vascular layer of sub- 
cuticula; /, layer of circular muscles; g , longitudinal muscle layer; 
h, ovarian mass ; i, i, cut branches of vessels ; X about 200 diameters. 
Fig. 90. Nerve ganglion isolated, X about 250 diameters. 
Sketches by the author. 
