CESTODES FROM FISHES — LINTON 421 



Length 34 mm., breadth 2.5 mm., narrowmg to 2 mm. at posterior 

 end; without bothria and unsegmented. Measurements in balsam: 

 Length 30 mm,, maximum breadth about 2.2 mm., tapering anteriorly, 

 posterior end bluntly rounded. The vitellaria begin 1 mm. from the 

 anterior end and continue to a point about 0.4 mm. from the poste- 

 rior end. The strobila is mature, the uterus occupying the greater 

 part of the median region, the first ova appearing 1.3 mm. from the 

 anterior end. The ovaries, which have the appearance of clusters of 

 distinct lobes, are crowded by the gravid uterus to one side or other 

 of the median Une. The vitellaria lie in an unbroken line along each 

 lateral margin of the strobila. The characteristic sphincter muscle 

 at the orifice of the vagina could be distinguished, but details of cirrus 

 and vagina were masked by the accumulation of ova in the uterus. 



Measurements of ova in specimens from Liparis liparis and in 

 specimen from Microgadus tomcod, about 0.033 by 0.018 mm. 



Genus BOTHRIMONUS Duvernoy 



BOTHRIMONUS INTERMEDIUS Cooper 



Plate 60, Figures 6, 7 



Bothrimonus intermedins Cooper, Journ. Parasit., vol. 4, p. 35, 1917; Illinois 

 Biol. Mon., vol. 4, pp. 351-357, figs. 6-8, 45, 81, 94, 1919. 



Specimen Jrom Acanthocottus octodecimspinosus. — Collected April 

 21, 1916, by Vinal N. Edwards; one strobila and fragments (U.S.N.M. 

 No. 8857). Aggregate length in formalin 15 mm., maximum breadth 

 in balsam 0.7 mm., breadth of scolex 0.53 mm. 



Specimens from Microgadus tomcod. — Collected by Mr. Edwards 

 on three dates in April in three different years, 1 on one date, 2 on 

 another, and 17 on another. Lengths in formalin 4 to 50 mm., 

 maximum breadth 1.4 mm. in balsam (U.S.N.M. No. 8858). 



Specimens from Morone americana. — Collected by Mr. Edwards 

 on two dates in April and one in May (U.S.N.M. No. 8859) in two 

 different years, 1 strobila on date in May, 7 on one of the dates in 

 April, and 51 from one fish on the other April date. Lengths 12 

 to 53 mm., breadths 0.5 to 2 mm. Measurements of longest strobila 

 in formalin: Length 53 mm., maximum breadth 1.65 mm., at point 

 about 0.5 mm. from posterior end 0.6 mm., scolex length 0.75 mm., 

 breadth 1.35 mm. Li formalin scolex opaque, strobila translucent 

 bluish, genitalia ivory white. 



Specimens from Tautoga onitis. — Collected by Mr. Edwards on 

 two dates in April, 1 on one date and 2 on the other. Lengths 8, 18, 

 and 20 mm. in formalin, maximum breadth 2 mm. Measurements in 

 balsam: Length 18 mm., breadth (anterior) 0.36 mm., breadth 

 (maximum) 1.31 mm., length of scolex 0.5 mm., breadth 0.67 mm. 

 (U.S.N.M. No. 8860). 



