340 BULLETIN OF THE BUREAU OF FISHERIES. 



5. Phyllobothrium foliatum Linton. 



1902. — July 11, few, small. July 29, 2, length 45 mm. Aug. 26, 2 small specimens and 1 larger. 

 referred doubtfully to this species. Auxiliary acetabula were seen on the bothria, but the arrange- 

 ment of the latter was more like that of Crossobothrium than Phyllobothrium. 



6. Phoreiobothrium lasium Linton. 



L90L— July 8, 2. 



1902.— July 11. few, small. Aug. 26, few. 



7. Phoreiobothrium triloculatum Linton. 



L902. -Jul) 29, 30, 1 measuring 55 mm. in length, others probably longer. Aug. 26, not numerous. 



8. Rhynchobothrium xpeciosum Linton. 



This specific name was made to accommodate certain encysted forms, which were found in several 

 species of teleosts. 



Owing to the lateness of the hour on two occasions and the abundance of other material to look 

 over on all occasions when specimens of this species were found, but few notes were made of the fresh 

 material. Enough was determined, however, to warrant the conclusion that the species is certain ly 

 either /.'. speeiosum or very near it. 



1.902. — July 11,2. One of these after killing in Lang's picro-aceto corrosive fluid measured 150 

 mm. in length. July 26, 4, found in both intestine and stomach. July 29, 2; 1 of these, measuring 

 60 mm. in length, presented an interesting abnormality, in what appeared to be the beginning of 

 supernumerary contractile bulbs situated 8.5 mm. behind the normal bulbs. Length of head and neck 

 to base of normal bulbs 7.5 mm. The second specimen measured 25 mm. in length. Aug. 20, few. 



9. Otobothrium crenacolle Linton. 



1902. — July 11, several in small cysts of elliptical outline in the submucosa of the stomach wall. 

 July 26, immense numbers encysted in stomach wall, cysts small, ellipsoidal and oval-elliptical. 

 Length of oval blastocyst, 1.5; greatest diameter, 0.9; length of larva 0.45 mm. Aug. 26, few. 



10. Otobothrium inirigne sp. nov. [Figs. 141-145.] 



Head broad, bothria lateral, widely divergent at the posterior end, with flexible borders; neck 

 elongated, expanding at posterior end into a prominent funnel-form collar, which overlaps the anterii tr 

 end of the body; accessory bothria] organs conspicuous; proboscides armed with hooks of diverse 

 shapes and sizes; contractile bulbs oval, about two and a half times as long as broad. 



Body, so far as developed, of nearly uniform breadth; first segments beginning a short distance 

 back of neck and very short; ripe segments not seen, last segment one and one-half times as long as 

 broad; reproductive organs seen only in rudimentary condition; reproductive apertures irregularly 

 alternate at a point a little in front of the middle of the lateral margin of the segment. 



Lateral vessels conspicuous, slightly sinuous. 



Dimensions, in millimeters, of specimen mounted in balsam: Length 10; length of head and neck 

 4.2; length of head 0.7; breadth of head 1.2, of neck just back of head 0.4, of neck at base 1.2. of body 

 just back of neck 0.87; contractile bulbs, length 0.72, breadth 0.28; length of proboscis, estimated, 

 3; diameter, excluding hooks, 0.09; diameter, including hooks, 0.15; length of longest hook 0.045; 

 diameter of accessory bothrial organ 0.15; distance from base of neck to first segment 0.6; length of 

 first segment 0.05, breadth 0.82; last segment, immature, length 0.9, breadth 0.6. 



Rudiments of reproductive organs begin 0.5 back of the junction between neck and body: collar 

 of neck overlaps body 0.3. The distinction between the neck and body in the stained specimen is 

 sharp. 



L902.— July 26, 2. 



11. Tetrarhynchus bisulcatus Linton. 



Numerous in pylorus and intestine. The heads of these worms, as is usual with this species, were 

 found to be embedded in the mucous membrane, sometimes several heads together in the same pit. 

 This condition is attended with much irritation and gives rise to some inflammation in the mucous 

 membrane. 



190 1.— .Inly S. 



1902. — July II, numerous. .Inly 20, few. July 29, 1, associated with T. robustus. Aug. 26, very 

 numerous in stomach, where they were attached to the mucous membrane. 



