PARASITES OF PISHES <>F BEAl'FoUT. NORTH CAROLINA. 



357 



5. Distomum vitellosum Linton. 



L902. -Aug. 7, I; specimen in | r condition; ova few, 0.086 by 0.054, segmenting. 



ii. Oasteruatomum gracilescens Rudolphi. 



See under Menidia menidia, etc. 



1901. — Aug. 1, numerous; fusiform, pale red to colorless; not much variation in size. One meas- 

 ured 1.44 mm. in length and 0.56 mum- in greatest breadth. 



1902. — July 31, I. Dimensions, life, compressed: Length 1.4; maximum breadth 0.65; transverse 

 diameter, anterior sinker 0.33; mouth 0.10; ova 0.018 by 0.011. Aug. 1, 12. Aug. 11, numerous. 

 Aug. 15, 30. i.ug. 20, numerous. Aug. 22, numerous. 



Small, minutely spinose, of very various shapes, translucent white to orange yellow, depending on 

 relative abundance of ova. The anterior end in some was curved ventrad, turning the sucker into a 

 hood-like organ. 



These worms agree closely with Olsson's figures and descriptions of forms which he refers with 



gome doubt to this species. The same species was found in this host at \V Is Hole, Mass.. but was 



not i. lent i tied. (Bulletin U. S. Fish Commission for 1899, pp.277, 298, pi. m, fig. 91, and p. 442, 

 pi. xxxiv, tigs. :n;7. 368. 



COPEPOD PAKASITBS. 



7. Lernanthropus sp. From gills. 



These very singular forms are certainly appropriately named in their generic title; fornot only do 

 the males suggest the human form hut the females, on account of a skirt-like prolongation of the abdo- 

 men for the proteetion of the ova, simulate with absurd accuracy the same as modified by the attire 

 commonly worn by women in civilized communities. 



1902. — July 22, 1; male. Aug. 1,3; female-. Aug. II, 5 females, 2 males. Aug. 15, 9 females, 

 3 males. Aug. 20, numerous; males and females: Aug. 22, 4 females, 7 males. Aug. 25, 7 males. 3 

 females. Length of male 1.73, of female 2.85 nun. 

 s. Copepod parasite. From gill.-. 



1902. — Aug. 1. 1; white with single, Cyclops-like eye-spot of red pigment; female with white egg 

 masses. Length, including caudal spines 2.1 mm. Aug. 11, 20; 1 on each date. 



Tylosurus raphidoma. Needle-fish. 



NEMATODES. 



1. Immalun nematodes {Ascaris). [Figs. 29, 30.] 



Two; from cysts on viscera. These belong to the type which is characterized in these notes as 

 having a short anterior diverticulum of the intestine and a slender diverticulum from the base of the 

 oesophagus. 



Dimensions, life, in millimeters: Length 11; diameter, middle 0.3, tapering about equally in each 

 direction; length of oesophagus, not including the posterior globular portion, 0.95; of globular portion 

 0.1; diameter of oesophagus 0.1; length of diverticulum of oesophagus 0.8, diameter of one 0.05; 

 length of diverticulum of intestine 0.3; diameter at anal aperture 0.11; distance of anal aperture from 

 posterior end 0.17. 



: >ne orange-yellow cyst tilled with waxy, degenerate tissue also probably due to nematode. 



TEST' IDES. 



2. Otobothrium sp. [Figs. 102-109.] 



In muscular tissues, very numerous, generally distributed through the muscles of the body, a few 

 close beneath the skin, by far the greater proportion in the deep muscles. < >f the latter a few were in 

 the abdomonal muscles, but most abundant laterally along the vertebral column. These tlesh parasites 



