PARASITES OF FISHES OF THE WOODS HOLE REGION. 
435 
Acipenser sturio, Sturgeon. 
NEMATODES. 
1. Dadnitis sphserocephala Dujardin. [PL xvi, figs. 200-202.] Aug. 5, 1884; 1, a female with embryos 
from intestine. Dimensions in millimeters: Length, 24; diameter of head, 0.38; length of 
oesophagus, 2.1; greatest diameter, 5 mm. from head, 0.64; diameter 4 mm. from posterior 
end, 0.5; diameter at anal aperture, 0.24; distance of anal aperture from posterior end, 0.5. 
CESTODES. 
2. Cysts on spleen, coat of stomach, and intestine. 
TEEMATODES. 
3. Nitzschia elongata Nitzsch. [Nitzschia elegans Baer.] Gills. 6, p. 508. 
Acipenser brevirostris, Short-nosed Sturgeon. 
ACANTHOCEPHALA. 
1. Eckinorhynchus attenuatus Linton. 3, p. 529, pi. lv, figs. 23-30. 
Acipenser rubicundus, Lake Sturgeon. 
The following notes on entozoa from the lake sturgeon are given in this connection. 
ACANTHOCEPHALA. 
1. Eckinorhynchus globulosus Rudolphi. 
Two specimens in the U. S. National Museum collection, collected by J. W. Milner, appear to 
belong to this species. 
TEEMATODES. 
2. Distomum auriculatum Wedl. G, pp. 521-522, pi. lxv, figs. 8-10, pi. lxvi, figs. 1-5. 
Pratt proposes the name Bunodera lintoni for this species. 
Anguilla chrysypa {Anguilla vulgaris ) , Ed. 
FOOD. 
Shrimp, crabs, annelids, mollusks, small fish. 
ACANTHOCEPHALA. 
1. Eckinorhynchus globulosus Rudolphi. 
Three specimens in the U. S. National Museum collection appear to belong to this species. Male, 
5.5 mm.; female, 6 mm. Aug. 7 and 28, 1899; numerous. Male, 7 mm.; female, 10 mm. This species 
resembles E. acus, but differs from that species in the greater relative length of the lemnisci, the erect 
and usually distinctly tapering proboscis, and the tubular instead of globular prostate gland. 
2. Eckinorhynchus agilis Rudolphi. 
Two specimens from the U. S. National Museum collection. I, pp. 490-492, pi. v, figs. 1-6. 
NEMATODES. 
3. Immature nematodes {Ascaris sp.). [PI. xi, figs. 125,126.] 7, p. 276. Aug. 5, 1899; 2 immature, 
encapsuled on viscera. 
Two specimens in the U. S. National Museum collection; also immature and encapsuled. 
Length, 22 mm.; diameter, 1 mm. Somewhat attenuate anteriorly, tail pointed and mucronate 
at tip {A gamonema capsular ia) . 
CESTODES. 
4. Tsenia dilatata lint on. t, pp. 488-489, pi. v, figs. 14-16. 5, p. 425. 
Specimens of this genus also taken in 1899; three on August 2. Dimensions in millimeters: Length, 
8; diameter of head, 0.28; diameter of sucker, 0.08. Segments not mature. One specimen August 28; 
length, 14 mm. [PI. xxv, figs. 272,273.] 
