I5V K. .1. .lOMNSI'ON. 739 



9. Looss. — "Die Distonifn unserer Fisclie u. Fnlache." Bihliotheca Zoolo- 

 gica, Heft 16, 1896. 



10. - " Naclilriigliche Benierkungeii zudeii Naiiien," etc. Zool. Anz., 



xxiii., 1900. 



11. I.(7KHK. — " Ueher Hemiuriden." Zool. Anz., xxiv., 1901. 



12. " Zur Kenntniss einiger Distomen." Zool. Anz., xxii., 1899. 



13. LuTZ, A. — " Distonia opistliotrias, ein neuer Parasit der Beiitelratte." 



Revista do Museii Paulista, 1895. 



14. OoHNER, T. — "Trematoden aus Reptilien." Ofver. Vet. Akad. Forli., 



Stockholm, lix., 1902. 



15. Pkatt. — " Synopsis of North American InverLehraLcs, xii." American 



Naturalist, xxxvi., 1901. 



16. Stii.es & HasSALT,. — "An Inventory of the Genera and Subgenera of 



the Trematode family Fasciolid;e," Arch. d. Parasitologie, i., 1898. 



EXPLANATION OF THE PLATKS. 



Figures 1-3 are drawings of whole-mounts, made with the help of the 

 camera lucida. Figure 4 is a diagram compiled from a series of transverse 

 sections. These drawings were made by Mr. F. W. Atkins, of the Si'dney 

 Technical College. Figures 5- 11 are untouched np photographs of sections. 



lieference letters. 



C.X., cirrus-sac — C.v., ciliated vessel of the excretory system — Ej.d., 

 ejaculatory duct — E., excretory vessel — E.s^., excretory sinus round the 

 oral sucker — .S.s„., excretory sinus round the ventral sucker — G.p., genital 

 pore — G.C., genital chamber — Int., intestinal limbs — L.c, Laurer's canal 

 — L.y.d., longitudinal yolk-duct — M.L, longitudinal muscle — M.c, circular 

 muscle — 0., ovary — O.cs., opening of ciliated vessel into oral sucker sinus 

 — O.e.v., opening of excretory vessels into the sinus — O.d., Oviduct — Oot., 

 ootype — P., penis — Ph., pharynx — P. Ph., pr?epharynx— Pr., prostate — 

 P.S., receptaculum seminis — R.s.u., receptaculum seminis uterinum — S g., 

 "shell-gland"' — S.v., supplementary vessel — T., testis — 7'.y.f;?., transverse 

 yolk-duct — Ut., uterus — f/i. a., ascending loop of uterus — Ut.d., descend- 

 ing loop of uterus — Vay., vagina — V.d., vas deferens — V.s., vesicula 

 seminalis — Y.d., yolk-duct — Y.g., yolk-glands — Y.r., yolk-reservoir. 



Fig. 1. — Harmostomum dasyuri, from the intestine of the marsupial "cat," 



Daay itriiii viverrimis. 

 Fig.2. — Harmo>itonmm simile, from the intestine of Perameles obe.iula. 

 Fig.3. — Mehlisia acuminata, from the intestine of Dasynrun viverriwin 

 Fig. 4. — Diagram of the female organ of Mehlisia ornithorhynchi. 

 Fig.5. — Horizontal longitudinal section through the posterior end of H. 



dasyuri;( x 45). 



