TREMATODES FROM FISHES — LINTON 9 



breadth, 10.2 mm.; longer diameter of anterior suckers about 1.82 

 mm.; diameter of posterior sucker, exclusive of marginal border, 

 2.66 mm. ; diameter of pharynx, 0.91 mm. ; length of spines on poste- 

 rior sucker, 0.13 and 0.15 mm. ; breadth, 0.02 mm. (U.S.N.M. No. 8151). 

 On the right margin of one of the specimens, near the middle of 

 the length, there is a spinelike structure, bearing on its ventral sur- 

 face, near the tip, four stout, sharp-pointed, chitinous hooks (pi. 14, 

 figs. 175, 176). There are two similar hooks on the dorsal side, not 

 shown in the figures. Length of spine about 9.42 mm. ; diameter at 

 inner end about 0.11 mm., near tip 0.04 mm. This structure cannot 

 be made out on the other specimen, which is much crumpled. 



Genus CAPSALA Bosc, 1811 



CAPSALA MOLAE (Blanchard) 



Plate 15, Fiqtjees 180-183 



Tristomum rudolpManum Diesing, Linton, Proc. U. S. Nat. Mus., vol. 20, p. 510, 



1898 ; Bull. U. S. Fish Comm. for 1899, p. 281, 1900. 

 Tristomum molae Blauchard, Linton, Bull. U. S. Fish Comm. for 1899, p. 466, 



1901. 



Host — Sunfish {Mola mold). 



Record of collections. — One, collected by Vinal N. Edwards, Au- 

 gust 1, 1894. Dimensions in alcohol : Length 23 mm., breadth 24 mm., 

 diameter of posterior sucker 16 mm. Location on host not noted on 

 label. 



Six (U.S.N.M. No. 8152), collected July 20, 1914, from skin of host; 

 largest 25 mm. in diameter. 



One, collected by Eobert Goffin, September 3, 1925, from skin. 



Eleven (U.S.N.M. No. 8153), collected July 19, 1926, from skin. 

 These were turned over to Dr. MacCallum. 



Table 3. — M.easurem,ents of three specimens of Capsala molae in talsam 



Measurement 



Length 



Breadth. 



Anterior sucker, length 



Anterior sucker, breadth 



Posterior sucker, length 



Posterior sucker, breadth 



Pharynx, length 



Pharynx, breadth 



Pharynx, anterior division, length... 

 Pharynx, anterior division, breadth. 

 Pharynx, posterior division, length.. 

 Pharynx, posterior division, breadth 



Mm. 

 15.00 

 14.50 

 1.54 

 L12 

 5.00 

 6.00 

 2.03 

 L75 

 1.12 

 L75 

 .91 

 1.56 



