462 
BULLETIN OF THE UNITED STATES FISH COMMISSION. 
TREMATODES. 
3. Distomum vitellosum Linton. Intestine. See 7 , p. 290, pi. xxxvn, figs. 38, 39. Found in this host 
July 28, 1899. 
4. .Distomum pyriforme Linton. Intestine. See 7 , p. 292, pi. xxxvm, figs. 52-59. Found in this host' 
in August, 1899 and 1900. 
5. Distomum sp. Intestine. [PI. xxvm, fig. 311.] 
Two distomes, found July 28, 1899. The following description is based on a memorandum sketch 
of the living worm and on a mounted specimen. Unfortunately one of the specimens was in bad 
condition when it was found. Body ovate-elliptical, depressed, with a short, retractile caudal appen- 
dix; neck short. Oral sucker subterminal with somewhat triangular aperture, a little broader than 
long. Pharynx subglobular immediately following the oral sucker. (Esophagus short. Intestinal 
rami simple elongate, extending to but not entering the appendix. Acetabulum at about the anterior 
fifth or sixth of the body, a little broader than long, in ventral view, much larger than oral sucker, 
aperture circular in life, transverse in alcoholic specimen. Cirrus pouch and seminal vescicle behind 
acetabulum; the cirrus passes to the left of the acetabulum and opens about half way between the 
suckers on the median line near the oesophagus. Testes two, large, subglobular, placed transversely 
behind the acetabulum, from which they are separated only by the cirrus pouch and seminal vescicle. 
( tvary globular, smaller than the testes on median line behind the testes and close to them. Vitelline 
glands, two slender, convoluted tubular organs marginal to right and left of ovary. No ova were seen 
in the living specimen and the uterus was not seen. 
Dimensions of living specimen slightly compressed, measurements given in millimeters: Length, 
3.07; diameter, anterior 0.54, at acetabulum 0.92, median 0.92, near posterior 0.50; oral sucker, length 
0.24, breadth 0.24; acetabulum, length 0.41, breadth 0.43; diameter of testis, 0.46; pharynx, length 
0.14, breadth 0.14; oesophagus, length 0.07, breadth 0.08. 
Dimensions of specimen mounted in balsam, in millimeters: Length, not including appendix, 1.9; 
length of appendix, 0.32; breadth of body, anterior 0.16, median 0.77, posterior 0.29; of appendix 0.17; 
oral sucker, length 0.13, breadth 0.14 (in the other (damaged) specimen these dimensions are 0.17 and 
0.20) ; acetabulum, length 0.32, breadth 0.34 (0.45 and 0.41 in the other) ; pharynx, length 0.08, breadth 
0.09 (0.09 and 0.15 in the other). 
In the mounted specimen what I take to be an ovum lying dorsal to one of the testes is 0.035 and 
0. 021. mm. in the two principal diameters. 
Tautogolabrus adspersus, Conner, Chogset. 
FOOD. 
Seaweed, hydroid stems, bryozoa, tunicates, annelids, small crustaceans of various kinds ( Caprella , 
shrimps, etc.), univalve mollusks found in stomach and intestine — in short, just such food as the fish 
would get by browsing on the material which grows on wharf piles and similar places. 
NEMATODES. 
1. Immature nematodes. On viscera. Aug. 12, 1900. 
CESTODES. 
2. Rhynchobothriwn. Cysts on viscera. 7, p. 281. Aug. 29, 1899; July 27, 1900. 
TREMATODES. 
3. Immature distomes encysted in skin. 7 , pp. 281, 298, pi. xl, figs. 76-81. Seen frequently in 1899 and 
1900. Dr. G. II. Barker reports that a large proportion, out of about 100 dinners collected this 
summer, are infested with this parasite. 
4. Distomum areolatum Rudolphi. Intestine. See 7 , pp. 293-294, pi. xxxix, figs. 60, 63. Found in 
this host Aug. 5, 1899. 
5. Distomum vitellosum Linton. Intestine. See 7 , p. 290, pi. xxxvi, figs. 38, 39. Found in this host 
.Aug. 5, 1899. 
