682 



60) Cryptogonimus chyli Osborn. 



Caeca and intestine. Amhloplites rupestris Raf. (Rock Bass). 

 1,45 X 0,27. 



61) Dennocystis ctenolahri. 



Encysted in skin and gills of Ctenolahrus adspersus Walb. (Gunner). 

 New genus and species: o'é'çwa, skin; xyartc;, bladder. Linton — 

 U. S. Fish Com. Bull. 1899. p. 281, 296. PI. 40. f. 76—81. 

 (15) Derogenes varicus O. F. Müller. 

 (17) Hemiurus appendiciilatus Rud. 



Nos. 15 and 17 former paper. Young of both species abundant in 

 Oopepods (Acartia), Aug. 1904. 



Amphibians. 



62) Sphyranura Osleri R. R. Wright. 



Gills and skin of Necturus maculatus Raf. (Mud Puppy). 



63) Monocœcum haryurmn. 



Intes. Necturus maculatus Raf. (Mud Puppy). 

 Centralbl. f. Bakt. Bd. 34. 1903. p. 822. 

 (44) Crepidostomum laureatum Zeder. 



Int. Necturus maculatus Raf. (Mud Puppy). 



64) Brachycœlium hospitale. 



Int. Diemyctylus viridescens Raf. (Spotted Newt). Plethodon erythro- 

 notus Grreen, (Red-backed Salamander). 

 -^ Centralbl. f. Bakt. Bd. 34. 1903. p. 823—830. 



65) Manodistoniwn occuUum. 



From Dieiïiyctylus viridescens Raf. (Newt). JRana virescens Kalm. 



(Common Frog, Green Frog). 



New genus and species: /navóg^ rare; occultus, obscure. Length 

 (permanent mount) 1,15, breadth 0,399. Mouth sucker 0,184 X 0,189. 

 Ventral sucker small, about 0,107, in centre of body. Pharynx small, 

 immediately behind mouth sucker. Oesophagus 0,23 long, narrow. 

 Caeca twice as long as oesophagus, falling some distance short of 

 posterior end. Excretory bladder broad and long, forking at the 

 middle of the length of the coeca not far behind the ventral sucker. 

 ■ Immature, but parts of the genital organs represented by rudi- 

 ments. Testes small, globular bodies, in a line with but behind the 

 ends of the coeca, dividing the space between these and the end of 

 the worm. They are lateral and parallel and give off fine ducts an- 

 teriorly. Ovary crowded between ventral sucker and the fork of the 

 excretory bladder. Genital pore in the short space between the ven- 

 tral sucker and the fork of the intestine, with the end organs of the 

 genital ducts faintly outlined. No recognizable vitellaria. 



