BY S. J. JOHNSTON. 361 



l'ig.45. — Dolichosaccus tryplierus (x27); photograph of whole- 

 mount. 



Fig. 46. — Dolichosaccus ischyrus (x32); photograph of whole- 

 mount. 



b'lgAl. — T.IS., Dolichosaccus tryphenis (xl70), through genital 

 opening, showing copulatory organ, etc. 



Fig. 48. — L.S., Dolichosaccus ischyrus (xoo), showing the structure 

 of the vesicula seminalis. 



Fig.49. — L.S., Dolichosaccus ischyrus (x55), showing the very 

 large excretory vesicle, Laurer's canal, etc. 



Fig. 50. — T.S., Dolichosaccus ischyrus (xl70), behind the testes, 

 showing excretory vesicle, distribution of the yolk-glands, 

 etc. 

 Fig. 50a. — H.S., Dolichosaccus ischyrus (x305), near the surface, 



showing the form and arrangement of the spines. 

 Fig. 51. — Brachysaccus anartius (x33); photograph of whole- 

 mount. 

 Fig. 52. — U.S., Brachysaccus anartius (x40), showing prsepharynx, 



etc. 

 JMg.53. — H.S., Brachysaccus anartius (xl40), showing Laurer's 



canal opening near the posterior end. 

 Fig. 54. — M.S., Brachysaccus anartius (x57), showing the Y- 



shaped excretory vesicle. 

 Fig. 55. — H.S., Brachysaccus anartius (x370), showing spines. 

 Fig. 56. — Fneumonoeces australis (x25); photograph of a whole- 

 mount, showing the typical arrangement of the yolk-glands. 

 Fig. 57. — Photograph of another whole-mount, showing the gene- 

 ral anatomy (x22). 

 Fig. 58. — L.S., Pneximonceces australis (x82), showing penis, etc. 

 Fig. 59. — L.S., Fneumonoeces australis (x37), showing the elonga- 

 ted vesicula seminalis. 

 Fig. 60. — T.S., Fneumonceces australis (xlOO), showing the coiled 

 arrangement of the vesicula seminalis near its anterior end. 

 Fig. 61. — T.S., l'nev>mon(]cces australis (x80), showing ovary, re- 



ceptaculum seminis, etc. 

 Fig. 62. — Fneumonoeces australis (x70), showing the arrangement 

 of the uterine loops behind the testes, position of the yolk- 

 glands, etc. 

 Fig. 63. — (lorgodera austraCiensis (x30); whole-mount. 

 Fig. 64. — ^H.S., Goiijodera australiensis, showing arrangement of 

 uterine loops. 



