ae 
496 REPORT OF COMMISSIONER OF FISH AND FISHERIES. [44] _ 
The length of the larger hooks on the proboscis is about 0.08™ ; of — 
the spines on the collar from 0.05™™ to 0.06" ; of the spines in the ven- 
tral rows from 0.06™™" to 0.07™™. 
In specimen No. 1, of which measurements are given above, the num- 
ber of spines visible on side in the first ventral row was 24; the num- 
ber visible on one side in the second to the twenty-first rows, respect- 
ively: 16, 13, 13, 16, 17, 13, 13, 12, 12, 10, 11, 12,11, 9, 9, 9, 8) 7, Ge 
Habitat.—Common Flounder (Paralichthys dentatus), Squeteague (Cy- 
noscion regale), Bluefish (Pomatomus saltatrix). In peritoneum and 
mesentery. Wood’s Holl, Mass., July and August, 1884~’85. 
a; 
Echinorhynchus proteus Westrumb. 
[Plate VI, Figs. 3-5. ] 
Dujardin, Hist. Nat. des Helminth.,p. 529. Molin, in Sitzungsb. d. Kais. Akad, d. 
Wissensch., xxx, 143, and xxxiii, 295. Leidy, Proceed. Acad. Phila., v, 208, and viii, 
48. Greef, Wiegmann’s Archiv, i, 361-375, tab. vi. Pagenstecher, Z. f. w. Z., xiii, 
413, tab. xxili-xxiv. Leuckart, Mensch. Paras., ii, 785-817. Molin, Denksch. d. K. 
Akad., xix, 272-3, tab. ix, fig. 2-3. 
For detailed synonymy and habitats see Diesing, Systema Heimiath., ii, 51-53, and 
Revis. der Rhyngo., 754. 
Proboscis cylindrical or often subclavate, with about 6 to 8 longitudi- 
nal series of recurved hooks visible on one side, 12 to 20 in each series. 
Median and anterior hooks flat and thin, postero-median and posterior, 
slender. A thin-walled, spherical bull a immediately back of the pro- 
boscis, followed by a long, slender, cylindrical neck. Body fusiform, 
slightly swollen and rounded anteriorly, obtusely rounded posteriorly ; 
color varying from light lemon-yellow to orange. Length, 15™™ to 
93mm | ‘ 
Measurements of a living specimen. 
Millimeters 
Tene pmOlSPOClIMNEN os ccniwa coe ac acee anonee seemed Seales eee ae ene 23. 00 
UUStN OF PLONGBCIB os. techies suas chicos bnawar tases vane seesae teen 0.75 
Diameter of bulla. aac ayes Soe Sele sa ede ts Ge aeloeealcice ic cee ee ee U75 
Dench Of NECK... 2, =\sa'sjimmeinyeer alm ogans Sed eee eleaeelee en -eea meee ee soar5e 
DSSHIZDN GL DOD 6 oo.nin oa son di ncn wnalawiam be Shie't aman Oe poi alate phan ad oe ae 16. 00 
Diameter of hody, 'Awberior .....22 cece <ecciwenwes pwnalnne sleek «=e an = eee 2.00 
Diameter of body, posterioriend. ; - 4.225). 4s. cosas nec cens 2 Wns see eee 0.77 
Diamoeter,ofmeck, median :-..!5... Sink cote edge een’: dee cores cee ee ae ee er 
Diameter, of proboscis, ANGELIOL 26 ois wc sinas dace maces «eckens Jedat sme de eseiee 0.17 
Diamoter of proboscis, median’. 242/22 -\sciajsscieinjn (nm slcie'c «l= 2's nee neler eee 0,31 
These parasites were found in great numbers attached to the inner 
wall of the large intestine of the Striped Bass (Roccus lineatus). They 
differ from most intestinal parasites in being highly colored. While 
the prevailing color is orange of different shades, many were observed 
which were a light lemon-yellow, and others intermediate between these 
colors. 
