Fia. 
EXPLANATION OF PLATE VI. 
1. Echinorhynchus sagittifer sp.nov. Outline sketch of young, showing pro 
truded proboscis, neck, collar armed with sagittate spines, transverse 
rows of sagittate spines on the body, and, interiorly, the proboscis 
sheath, retractor muscles of same, the genitalia depending from sheath 
of proboscis, enlarged 20 diameters. 
la. Hooks of proboscis, ventral side, enlarged about 150 diameters. 
1b. Hooks of proboscis, dorsal side, enlarged about 150 diameters. 
lc. Sagittate spines from collar, enlarged about 150 diameters. 
1d. Sagittate spines from one of the transverse ventral rows on body, enlarged 
about 150 diameters. 
le. Five contiguous hooks in one of the spiral series on the proboscis, enlarged 
about 150 diameters. 
2. Sketch of live specimen, somewhat flattened by the compressor, enlarged 
12 diameters. ’ 
3. Echinorhynchus proteus Westrumb. Portion of rectum of Roccus lineatus 
(Striped Bass) with parasites attached, natural size. 
4. Outline of an individual removed from its plese of attachment, enlarged 2 
diameters. 
Abnormal secretions in peritoneal covering of large intestine of Moccus 
lineatus, to the inner coat of which numbers of these parasites were at- 
tached, as shown in Fig. 3, natural size. 
5a. One of the cysts shown in Fig. 5, cut open, exposing the calculus within, 
natural size. 
5b. Transverse section through one of the abnormal secretions, showing its con- 
centric structure, natural size. 
6. Portion of cystic duct of Cynoscion regale with young Tetrabothria attached 
to mucous lining, enlarged 3 diameters. 
7. One of the specimens removed from its place of attachment, enlarged 12 
diameters. 
8. A young Tetrabothrium from intestine of same host, enlarged 12 diameters. 
9, Another from same habitat, flattened under compressor, enlarged 12 diame- 
ters? 
ia 
Figures 2, 3, 4,6,7, 8, and 9 from life; others from alcoholic or mounted specimens. 
All figures made by Mrs. Edwin Linton. 
510 [58] 
