640 
BULLETIN OF THE BUREAU OF FISHERIES. 
Order COPEPODA (parasitic). 
Family Arguudaj. 
Argulus alosce Gould. 
R. Rathbun, 1884a, p. 485 (no local records); C. 
B. Wilson, 1902, p. 707; 1905, p. 121; M. J. 
Rathbun, 1905, p. 87. 
Taken locally from outer surface of Pomolobus 
pseudoharengus and Osmerus mordax, very 
rare. 
Argulus funduli Kroyer. 
C. B. Wilson, 1902, p. 710; 1905, p. 125; M. J. 
Rathbun, 1905, p. 87. 
Plosts; Fundulus heleroclitus and F. majalis, out- 
side of body, rare . Often taken in the tow net, 
when swimming freely. 
Argulus laticauda Smith. 
Verrill and Smith, 1873, p. 574, 452 (sp. nov.); 
R. Rathbun, 1884a, p. 484; C. B. Wilson, 1902, 
p. 705; 1905, p. 127; M. J. Rathbun, 1905, p. 
86 . 
Vineyard Sound, among algae. — Smith. Buz- 
zards Bay, Woods Hole, Eel Pond, Waquoit, 
Katama Bay, the most abundant of the salt 
water species of this genus. — Wilson. 
Hosts: Anguilla chrisypa, “blenny, ” Microga- 
dus tonicod, Paralichthys denlatus, Pseudopleu- 
ronectes americanus, Myoxocephalus sp., Raja 
sp.; found on outer surface of the body, often 
becoming numerous enough to injure the 
host. — Wilson (MS.). 
Argulus lalus Smith. 
Verrill and Smith, 1873, p. 574, 452 (sp. nov.); 
R. Rathbun, 1884a, p. 484; C. B. Wilson, 1902, 
p. 704; 1905, p. 128; M. J. Rathbun, 1905, p. 
86 . 
Only two specimens recorded from local waters, 
both taken at surface in Vineyard Sound ; host 
unknown . 
Argulus megalops Smith. 
Verrill and Smith, 1873, p. 575, 452 (sp. nov.); 
R. Rathbun, 1884a, p. 485; C. B. Wilson, 1902, 
p. 706; 1905, p. 129; M. J. Rathbun, 1905, p. 
86 . 
Hosts: Fundulus sp., Lophius piscatorius, Lo- 
pliopsetta maculata, Microgardus tomcod, Myox- 
ocephalus octodecinispinosus, Paralichthys den- 
tatus, Prionotus carolinus, Pseudopleuronectes 
americanus , Raja erinacea; “ is often numerous 
enough on flounders to hasten their death.” — 
Wilson (MS.). Also reported from surface tow, 
in Vineyard Sound. — Smith. 
Known to breed from August to November; eggs 
require 60 days’ incubation at summer temper- 
ature. — Wilson (MS.). 
Family Ergasiud^. 
Ergasilus labracis Kroyer. 
C. B. Wilson, 1911, p. 329. 
Woods Hole, on gills of the striped bass ( Roccus 
lineatus). Two specimens of gills from this 
region which were examined by Dr. Wilson 
were found to be badly infested 
Ergasilus manicatus Wilson. 
C. B. Wilson, 1911, p. 337 (sp. nov.). 
Woods Hole and vicinity. ‘‘This tiny parasite 
is very common on the gills of the silversides 
minnow, Menidia notata, along the Atlantic 
coast.” 
Tucca impressus Kroyer. 
C. B. Wilson, 1911, p. 354. 
Woods Hole from the fins of a burrfish ( Chilom’yc - 
ter us scheopfi.) 
Tucca corpulentus Wilson. 
C. B. Wilson, 1911, p. 358 (sp. nov.). 
Woods Hole, ‘‘a single lot of this species, which 
was taken from the northern swell toad, Spke- 
roides maculatus 
Artacolax saetiger Wilson. 
C. B. Wilson, 1911, p. 361 (sp. nov.). 
Woods Hole, ‘‘a single lot, . . . consisting of 
three females taken from the flying fish, 
j Exocaetus volitans.” 
Bomolochus teres Wilson. 
C. B. Wilson, 1911, p. 379 (sp. nov.). 
Woods Hole, from gills of menhaden, ‘‘quite 
rare, the examination of many fish yielding 
but a few specimens.” 
Family Chondracanthid^. 
Chondracanthus cornuius Muller. 
M. J. Rathbun, 1905, p. 100 (no local records). 
Common in mouth and gill cavities of fishes of 
the family Pleuronectidae. (Here included 
on authority of C. B. Wilson, MS.). 
Chondracanthus galeritus Rathbun. 
R. Rathbun, 1886, p. 317 (sp. nov.); M. J. Rath- 
bun, 1905, p. 101. 
Woods Hole and vicinity, Menemsha Bight. 
From interior of mouth of Paralichthys dentatus;. 
common. 
Breeds in July, August, September; male para- 
sitic on female. 
Chondracanthus merluccii Holten. 
M. J. Rathbun, 1905, p. 101. 
“Woods Hole region.” (Wilson, MS.). Para- 
sitic on Merluccius bilinearis. 
