No.1%0. PARASITEiS OF BERMUDA FISHES— LINTON. 121 



EXPLANATION OF PLATES. 



REFERENCE LETTERS USED IN FKRIRES OF THExM ATODES. 



a. ventral sucker. pJt. phar3-nx. 



c. cirrus. ^r. seminal receptacle. 



cp. cirrus pouch. sv. seminal vesicle. 



e.r. excretory vessel. t. testes. 



g. genital aperture. u. uterus. 



gs. genital sucker. vd. vus deferens. 



L intestine. vg. vitelline gland. 



o. ovary. vr. vitelline reservoir. 



on. esophagus. rd. vitelline duct. 



p. prostate gland. 



Plate L 



Ascaris, species from Mi/cferopcrca apua. 



Fig. 1. Optical section of anterior end shoAving characteristic diverticulum of intes- 

 tine {id), and of esophagus {od); in balsam; length of esophagus L5 mm. 

 la. Head enlarged; diameter 0.12 mm. 

 16. Ventral view of posterior end, balsam; diameter at anal aperture 0.0!) mm. 



Immature Nematode from Epineplielns mandim(x. 



2. Diagrammatic sketch of anterior end, life. 



Iiiniadnre Nematode from Jlavjie rufa. 



3. Posterior end; diameter at anal ajierture 0.03 mm. 



lelitfn/oiiema, species from Lgcadoidi-t )norbiga. 



4. Anterior end, optical section, life; diameter, anterior, 0.09 nun. 

 4a. Posterior end of same; diameter 0.07 mm. 



Ileteratis foveolata Rudolph i . 



5. Female from Diplodas mrgns; lengtli S mm. 

 5a. Male; length 4 mm. 



56. Posterior end of male, lateral view, life; distance of anal aperture from tip 



0.015 mm.; au, anal aperture; h, bursa; .s'^*, spicule. 

 5c. Posterior end of female, life; diameter at anal aperture 0.12 mm. 



6. Optical section, balsam, specimen from Lgcodontis vtorhtga; length of esopha- 



gus 0.8 mm. 



7. Diagram of anal papilla-. The specimen from which this sketch was made 



was from N'eomnenis grixeuK. 



Plate II. 



Ileterak is foveolata Rudolphi, continued. 



Fig. 8. Transverse section of specimen from Mycteroperca apua. Anterior end of 

 pharynx showing beginnings (a a) of longitudinal divisions of esophagus. 

 The position of the third division will be at the lower end of the figure 

 where, in this section, a few of the teeth are shown; maximum diameter, 

 0.13 mm. 



