386 BULLETIN OF THE BUREAU OF FISHERIES. 



and of C. regalis. Aug. 31; rather numerous; larger specimens in cystic duct; smaller in intestine: 

 bothria simple; 2 red pigment spots in neck. 



1H02. — Aug. 11, 1, large, red pigment in neck. 

 .'!. Rhynchobolhrium sp. 



L901. — July 15, a slender larva from cyst on viscera; length of bothria 0.21 mm.; anterior end of 

 bulbs 3.7 mm. from anterior end of scolex. The hooks bear some resemblance to those of II. plicalum. 



4. Otobothrium crenacolle Linton. [Figs. 112-114.] 



1901. — July 15, in cysts, very numerous in submucosaof stomach. The cysts were small; an average 

 blastocyst measured 1.1' mm. in length and 0.7 mm. in breadth. Dimensions of larva in millimeters: 

 Length 0.5; breadth of bothrium 0. 16; diameter of neck 0.11; length of contractile bulbs0.072, breadth 

 0.034; length of proboscis 0.45; diameter exclusive of hooks 0.017. July 22; large numbers of small 

 oval cysts in stomach wall. A few of these were opened and the blastocysts liberated. They 

 contained larvae which were immature, but under pressure the characteristic pits on the borders of 

 the bothria and the position of the contractile bulbs could be made out. Aug. 28; small cysts, 

 numerous, in stomach wall. 



5. Tetrarhynchus bisulcatus Linton. 



1901. — Aug. 28, scolices encysted in stomach wall; associated with No. 4. 



TEMATODES. 



6. DiHomum monticellii (?) Linton. 



L901. — July 29, 1, an appendiculate distome from the intestine; dull yellowish-white, finely and 

 transversely wrinkled when contracted. Length very variable while living. When the length was 

 3.6 mm. the breadth was 1.8 mm. ; alcoholic specimen, length 2.03 mm., breadth 0.87 mm. Dimensions, 

 in millimeters in life, specimen compressed: Oral sucker, length 0.31, breadth 0.38; pharynx, length 

 0.22, breadth 0.18; ventral sucker, diameter 0.83. The larger anterior end of pharynx included in 

 oral sucker; intestinal rami long. This specimen was stained and sectioned, but the reproductive 

 organs remained indistinct. Aug. 28; ], probably same species, immature. So far as can be made nut 

 this specimen agrees witli I), monticellii. It agrees very closely with No. 15, under Micropagon undulatus. 



7. Distomum tenue Linton. 



., 1901. — Aug. 21, 1, agreeing with this species, or more nearly with the variety tenuissime. This 

 specimen was in a macerated condition when studied, and there were no spines on tin- body <>r around 

 the mouth. The following notes were made on the specimen after it had been in weak formalin over 

 night. Dimensions in millimeters: Length 3.5; breadth 0.45; oral sucker, length' 0.13, breadth 

 0.15; pharynx, length 0.19, breadth 0.12; ventral sucker, length 0.24, breadth 0.22, threeova present, 

 length iif each 0.092, shorter diameters 0.044, 0.048, and 0.(151, respectively. Testes long oval, follow- 

 ing each other closely "ii the median line, near the posterior end, the anterior one closely preceded 

 by the ovaiy. Vitellaria rather sparse, but distributed as in IK tenue, viz., peripheral in posterior 

 region. Pharynx near ventral sucker, distance from ventral sucker 0.2, from oral sucker 0.7. Aug. 

 28; 1. This spec-mien has the general arrangement of its anatomy like this species, but with the 

 habit nf body rather more like Ik denlatum, and with oral spines missing. Dimensions, life, in milli- 

 meters: Length 2.8, breadth 0.46; transverse diameter nf oral sucker 0.17, of pharynx 0.1, of ventral 

 sucker 0.19, no ova; pharynx remote from mouth: cirrus pouch behind ventral sucker. 



8. Dislomum valde-inflatum Stossich. 



1902. — Aug. 11, few; in cysts with greenish-yellow waxy secretions on viscera. 



