PARASITES OF FISHES OF THE WOODS HOLE REGION. 473 



becomes prominent, and tlie general appearance becomes mucli altered. While this specimen differs 

 considerably in its outlines from the one figured in the original description, the difference is not so 

 great as I liave seen in other species, due to difference in treatment. 



Remora remora {Erheneis rfinorn) , lii'iiiora, Sucker. 



Of the nine remoras examined the stomachs were emptj' in all lint two; one of tliese contained 

 the bones and tail of a lish resembling the menhaden; the other contained a scjuid. 



CESTODES. 



1. Ithiiiicliolxillirium i^jiiriiis-iiiii Linton. Cysts on viscera. '•» pp. SOl-.SO.^, ])\. i.xiv, figs, b'i, 14, and pi. 



i.xv, tigs. 1-7. 



TKEM.\T01)ES. 



2. Digtomum lageniforme Linton. Intestine. 6, pp. 524-325, pi. xi.vii, figs. 1, L'. 



3. Distomum monticellii'Lmton. Intestine. <J, pp. 51S-520, pi. .xi.iv, figs. 2-8. Aug. 17, Isiil); 4. Aug. 



9, 1900; 7. On gills. 

 The preserved sj)ecimens of these two lots measure from 4 to 5 mm. in length. While living 

 they vary, with different stages of contraction, lietween 4 mm. and 10 mm. In the living worm tlie 

 body was transparent, slightly tinged with yellow; folds of uterus orange, lighter in posterior jmrt of 

 body; suckers also transjiarent tinged with yellow; testes, seminal vesicle, and cirrus pouch white. 



Merluccius bilinearis, Silrcr Hakf, Wldtimj, Fruxl-Jish. 



Stomachs empty in most of the specimens which have lieen examined. The following have been 

 noted: Fragments of fish on two occasions; small Crustacea in intestine of one; many cralis ( I'linii/inis) 

 in stomach and intestine of one. 



AC.\NTHOCEPnAL.\. 



1. Tyiiiiwrhiinclnis anis Rndolphi. Intestine. One sj)ecimen, a female, July 11, 1900. 



This specimen was smaller and more slender than the worms from the winter flounder and others 

 which I have referred to this species. The proboscis is cylindrical; hooks very regularly placed, 

 twelve iu each of the eight vertical rows which are visible on one side. See 3, p. 525, etc. 



XE.'ilATODES. 



2. Iininatinr nematodrx (Ascaris). [PI. xiii, figs. 160-162.] Serous coat of viscera. 7, p. 282. 



Found in the specimens exannned in the summers of 1899 and 1900. Some of those found in 

 1900, which were particularly aliundant on the pyloric cjeca, can be recognized as young of the genus 

 Ascaris. The.se were reddish or reddish-brown and from 5 to 16 mm. in length. Collected also l)y 

 S. E. IMeek, Fulton Market, New York, November, 1886. "Abdominal cavity appeared swarming 

 with the worms. All were very lively." Dimensions of one in millimeters: Length, 22; diameter, 

 0.43; length of o'sophagus, 2.6. Figs. 160, 161, are from the latter. 



CKSTOI)f:S. 



3. Diliiillirliiiit rrii)!siri'jiK RudiAphi. Intestine. [PI. xxiv, figs. 266-26S.] Aug. 5, 1899; 1. Scolex and 



short strobile. 

 Length, 8 mm. (alcoholic); number of joints, about 40. Dimensions in millimeters, life: Length 

 of head, marginal view, 1; length of bothrium, lateral view — i. e. , corresponding to the flat surface of 

 the body 1.14; breadth of head, corresponding to marginal view' of body 1.5, corresponding to fiat 

 surface of body 1.3; breadth of first segment, anterior 0.78, posterior 1.07, thickness 0.36. Po.sterior 

 segments .show rudiments only of the reproductive organs, but no indication of external genital 

 opening. The cuticle is covered with minute spines. In the alcoholic specimen the head is nearly 

 spherical. See No. 6, imder Poiaatomus mltatriic. 



