ON A NEW GENUS OF BIRD-CESTODES. 147 



The type slide has been presented to the Australian 

 Museum, Sydney. 



My thanks are due to my friend, Mr. S. J. Johnston, b.a., 

 b. sc, of Sydney University, for handing the specimen over 

 to me. 



Reference to Plate VIII. 

 Clelandia parva, Jnstn. 

 Explanation of lettering : — Ap.d., apical disc; c, cirrus; c.s., 

 cirrus sac; e.v., excretory vessel; g.ap., genital aperture; g.h., 

 guard of hook ; g.p., genital papilla; h., hook; h.h., handle of hook; 

 l.sp , large spines at base of cirrus; ov., ovary; r., rostellum; 

 r.m.c.j retractor muscles of cirrus; s. t sucker; s.h., shaft of hook; 

 sp., spines on cirrus; t., testes; ul., uterus; v., vitelline duct; v.d., 

 vas deferens; vg., vagina; vit., vitelline gland. 



Fig. 1. Entire strobila. 

 „ 2. Scolex. 

 „ 3. Hook. 



„ 4. Young segment with developing genitalia (slightly dia- 

 grammatic). 

 ,, 5. Part of a mature segment — cirrus everted. 

 „ 6. Large spine from base of cirrus. 



All figures except figure 4, were drawn using a camera lucida. 

 The"ovary is indicated in figs. 4 and 5, by hatched lines. 



