Helminth Fauna of the Dry Tortngas. 55 



The first specimen collected was young. The intestines in the middle 

 third of the body were inflated, and there were two distinct lateral pa- 

 pillae situated one on each side of the body opposite the antero-lateral 

 border of the ventral sucker (fig. 120). This character was noted in 

 subsequent finds, although it did not always present quite the same 

 appearance shown by the one sketched. 



The living worms are characteristically colored, the testes and ovary 

 being ivory-white, the intestine and vitellaria golden -brown. 



Length of alcoholic specimens 3.5 to 7 mm. 



Dimensions of living specimen (fig. 120): Length 2.80; breadth at 

 ventral sucker 0.45, behind ventral sucker 0.42 ; oral sucker 0.14; pharynx 

 0.07; ventral sucker 0.40. 



Ova, balsam: 0.038 by 0.014 and 0.042 by 0.017. 



Host, Kyphosus sectatrix: 



1907, July 16, 5 fish, 1 distome. 



1908, July 5, 1 fish, 6 distomes; July 8, 1 fish, 9 distomes. 



Brachadena pyriformis gen. et sp. nov. (Figs. 123-126.) 

 Etymology: foa^us, short; adijv, gland. 



Body fusiform, greatest breadth at level of ventral sucker, in most 

 cases tapering to each end. In some the posterior end is bluntly rounded. 

 Oral sucker subterminal, about one-third the diameter of the ventral 

 sucker ; pharynx contiguous with the oral sucker ; no esophagus ; intestines 

 extend to the posterior end. Reproductive aperture ventral to pharynx; 

 cirrus and the relatively large prostate between the oral and ventral 

 suckers; seminal vesicle at caudal border of prostate, usually partly 

 dorsal to the ventral sucker. Testes 2, transversely placed, at caudo- 

 lateral margin of ventral sucker; ovary subglobular, behind testes on 

 median line; seminal receptacle dorsal and extending a little beyond 

 the right anterior border of the ovary. The yolk-glands are about 7 

 long-pyriform lobes radiating from the caudo-lateral border of the ovary ; 

 uterus filling the body generally behind the ventral sucker to the pos- 

 terior end and dorsal to and on right side of ventral sucker. 



A few small distomes (fig. 124) are also referred to this species. 

 They may belong to another species, but my material does not justify 

 a more complete separation than is involved in this special mention. 



Host, Hcemitlon macrostomum: 1906, July 13, 1 fish, 1 distome. 



Dimensions, life: Length 1.12; breadth, anterior 0.19, middle 0.70, 

 posterior 0.42; pharynx 0.07; ventral sucker 0.50; ova 0.034 by 0.017 

 and 0.040 by 0.020. 



Host, Hcemulon plumieri: 



1906, July 8, 1 fish, 1 distome; July 10, 24 fish, 6 distomes. 



1907, July 3, 16 fish, 1 distome; July 13, 6 fish, few distomes. 

 Dimensions, life: Length 1.26; breadth, anterior 0.14, middle 0.70, 



posterior 0.28; oral sucker, length 0.08, breadth 0.16; pharynx, length 

 0.05, breadth 0.08; ventral sucker 0.53; ova 0.040 by 0.020. In this 

 specimen the oral sucker and pharynx were variable. 



