XX DESOEIPTION OF PLATES. 



PLATE III. 



1. Sexually mature example of AmjiMstoma conicum, magnified about 12 diam. 



It exhibits tlae oral and caudal suckers, the intestinal cceca (coloured blue), 

 the uterine canal (yellow), the nervous collar and so-called cerebral gan- 

 glia, and, more particularly, the complicated system of water vessels (red). 

 — After Blanchard. 



2. Another specimen (x 2 diam.) with the dorsal surface exposed. — Blanchard. 



3. The same viewed laterally. — Blanchard. 



4. Part of the female series of reproductive organs, isolated to show the connec- 



tion of the vitelligene glands with the ovary and with the uterus (x 12 

 diam.). — Altered from Blanchard. 



5. Male reproductive organs (x 12 diam.). — Altered from Blanchard in accordance 



with an original dissection. 



6. Egg of an Amphistoma taken from the paunch (rumen) of a zebu, formerly 



living in the Zoological Society's Menagerie, Regent's Park (x about 80 

 diam.) . — Original. 



7. Seminal corpuscles from the testis (highly magnified). — After Blanchard. 



PLATE IV. 



land 2. Two examples of Oxyuris curvula from the large intestine of the horse, 

 Females. Natural size. 



3. Section of the anterior part of the body of one of the above, showing the fine 



transverse rings and conical form of the head. Slightly magnified. 



4. Another view of part of the head, showing the oral aperture, the transverse 



striae, and, more particularly, the elastic denticles (Jioioppes de polls ou cirrlies 

 flottants of Dujardin) projecting from the pharynx (x 60 diam.). 



5. An egg taken from the smaller of the two worms. Highly magnified. 



6. Vegetable debris from the intestine canal of one of these Oxyures ; a, hair con- 



stricted at the base ; h, elongated epidermic cell ; <?, oval parenchymatous 

 cell ; d, e, simple unicellular hairs ; f, fringed epidermic cellular tissue ; g, 

 spiral fibre. Highly magnified. 

 These figures are copied from drawings executed by Mr. Busk. 



PLATE V. 



1 . Two examples of the whipworm {TrichocepJialus affinis, Rudolphi) from the 



coccum of a young giraffe which died in tho Zoological Society's Menagerie, 

 Regent's Park. Tho upper one a female, tho lower a male. Slightly 

 enlarged. 



2. Head of the male specimen, showing the spurious winged appendages on either 



side of tho mouth (x about 200 diam.). 



3. Section of the neck : a, longitudinal band of epidermic cells ; a', four of the 



same isolated and seen under an altered focus j h, fold of the cesophagus ; 

 c, c, transverse striae; d, d, oval corpuscles (x 230 diam.). 



