NO. 1560. PARASITES OF BERMUDA FISHES—LINTON. 109 



In Pratt's S^niopsis this distonic comes near tlio oenus Spcvrostoma. 

 The species was found in three of the Beiimul-.i fishes. 



J^alisfC'S c<(r(>linriix!s. 



Jul}' 14, otic hundred and (it'ty-one; July 22, two. The sniaHer 

 specimens were longer than broad, the larger ones were broader than 

 long. Many were folded by the approximation of the anterior and 

 posterior ends. 

 Lacfopli rys 1 ricorn i.s. 



August 1, one, circular, translucent-white, vitellaria yellowish. 

 Dimensions, in millimeters, life: Length 1.78; breadth l.TT; diam- 

 eter of oral sucker 0.14, of pharynx 0.(»1>, of ventral sucker 0.15; ova 

 0.058 by 0.036. 

 Lactop hr[ix tr igoims . 



August 3, one, small. Dimensions, in millimeters, life: Length 

 0.64, breadth 0.72; diameter of oral sucker 0.07, of ventral sucker 

 0.12; ova 0.o7 by 0.04. The vitellaria were profuse. The stained 

 specimen shows the ovary to be trilobed, the anterior lobe projecting 

 dorsal ly. 



DISTOMUM TRULLA/* new species. 

 Plate XI, fig. 79. 



Type.— C^t. No. 5802, U.S.N.jSI. 



In Pratt's Synopsis this species fsdls in the genus IlaJlcoindra. 



Body pyriform, compressed, densely covered with small, low, round 

 spines; oral and ventral suckers about equal; phar3Mix equal in length 

 to the diameter of the ventral sucker, separated from the oral sucker 

 by a short pre-esophagus, which may become indistinguishable in a 

 contracted specimen; esophagus short; rami of intestines simple, 

 apparently extending to near th(^ posterior end of the body; testes 

 two, near posterior end, diagonal!}" placed and near together, unequal; 

 cirrus pouch long-clavate, dorsal to ventral sucker and to the left; 

 uterus between testes and ventral sucker, the thick-walkni and gland- 

 ular extremity lying beside the cirrus on the left; o\"ary three-lobed, 

 in front of testes and contiguous with anterior testis and a little to the 

 right of the median line of the l»od}-; o\a ratlier lunnerous, their 

 length equal to about one-fourth the diameter of the ventral sucker; 

 vitellaria diflfuse, filling the posterior and lateral regions of the body 

 as far forward as the piiarynx. 



Dimensions, in millimeters, balsam: Length 1.14; ])readth, anterior 

 0.27, middle 0.73, near posterior 0.47; oral sucker, length 0.15, ])readth 

 0.14; pharynx, length 0.12, breadth 0.1 1: ventral sucker, length 0.14, 

 breadth 0.15; ova 0.042 by 0.027. 



From Ocyiinin cJu'y.Knrns. 



July 22, three. 



"From the Latin word tmlhi, signifying a trowel. 



