382 



BULLETIN OF THE BUREAU OF FISHERIE8. 



10. Distomum appendiculatum Rudolphi. 



L902. — July 18, 1, small distome, in >t in ; s "»»l condition, agrees closely with this species; ova 0.014 

 by 0.011. 



11. IKstomum vitellosum Linton. 

 1901. — Aug. 24, 1, from intestine. 



li'. Distomum pyrijormt Linton. 



1901. — Aug. 20, 4. Dimensions, in millimeters, of largest specimen, compressed: Length 1; breadth 

 0.42; diameter of oral sucker 0.07, of pharynx 0.04, of ventral sucker 0.09; ovum 0.068 and 0.034 in 



two principal diameters; smallest specimen, length 0.53, breadth 0.29. Aug. 2:!, 1, not in* g 1 



condition. 



1902. — Aug. 8, •"., not in good condition, belong to this species or are near it. Dimensions, life, 

 in millimeters: Length 1; breadth 0.5; diameter of oral sucker 0.08, of pharynx 0.05, of ventral 

 sucker 0.09. 



13. Distomum sp. [Fig. 179.] 



1901. — Aug. 17, 1, somewhat macerated. Dimensions, in millimeters: Length 2; diameter 1, of 

 oral sucker 0.38, of pharynx 0.28, of ventral sucker 0.25; ovum 0.075 and 0.058 in two principal 

 diameters. 



14. Distommn corpulentum sp. nov. [ligs. 180-182.] 



Body unarmed, subspherical, ventral sucker much larger than oral, sessile, prominent, aperture 

 transversely elliptical, mouth subterminal; pharynx contiguous to oral sucker; oesophagus very short. 

 Each branch of the intestine with a short diverticulum prolonged anteriorly, parallel with the pharynx. 

 testes two, lateral behind the ventral sucker; ovary between the right testis and the ventral sucker; 

 cirrus pouch muscular in front of ventral sucker and a little to the right, vitellaria lateral. The species 

 has many points of resemblance to />. /»/;/<///' Beneden. 



1901. — Aug. 21, 3, small and nearly spherical. One of the specimens was pinkish or light orange, 

 when viewed by transmitted (artificial ( light, the ova, which filled all the post-acetabular region, were 

 seen to be amber-yellow, while the sucKers, particularly the ventral sucker, were brownish-red. 

 Dimensions of larger specimen, flattened under cover-glass, in millimeters: Length 2.25; breadth 1.74; 

 oral sucker, length 0.21, breadth 0.20; pharynx, length and breadth each 0.12; ventral sucker, length 

 0.73. breadth 1.16; ovum 0.051 and 0.027 in the two principal diameters. Dimensions of a second 

 smaller and paler specimen under same conditions: Length 1.54; breadth 1.26; oral sucker, length 

 0.17, breadth 0.21; pharynx, length 0.13. breadth 0.10; ventral sucker, length 0.46, breadth 0.8:;; ova, 

 irregular, maximum, 0.041 and 0.024; others 0.027 and 0.020, 0.030 and 0.015, 0.027 and 0.017, respec- 

 tively, in tin' two principal diameters. An un flattened specimen, which had lain in formalin over 

 night, but which had not sensibly changed its proportions, had the following dimensions: Length 0.77; 

 breadth 0,75; thickness 0.63. Aug. 23, 24, 1 on each date. 



Archosargus probatocephalus, Sheepshead. 



No entozoa were found in the alimentary canals of these fish, which is not surprising when one 

 considers the nature of the contents of stomach and intestine, which would act as a mechanical 

 anthelmintic. 



PHOTOZOA. 



1. Myxobolus t Henneguya) sp. 



Aug. 3, a small white patch on one of the pectoral tins, about 2 mm. in length, was found to con- 

 tain spores which appear to be identical with those found in the intestinal wall of the drum (Scixnops 



oceUatus) ami pompa Trachinotus carolinus). About the only difference noted was that the caudal 



prolongation of the shell was. longer in these than in those from the drum. The length of the body 

 was barely o.o] mm., while the length of the spore, including the caudal spicule, was from 0.03 to 0.04 

 mm. 



