W. Nicoll 
41 
EXPLANATION OF PLATES IV AND V. 
Fig. 1. Maculijer suh-aequiporus. x30. 
„ 2. Coitocoecum gymnophallum. x 40. 
„ 3. Aephnidiogenes barbarus. x 30. 
„ 4. Genolopa trijolijer. x 50. Pressure preparation. 
„ 5. Genolopa cacumirMta. x 60. 
„ 6. Sterrhurus brtmcirrus. x 50. Pressure preparation. 
„ 7. Ectenurus angusticauda. x 30. 
„ 8. Xenopera insolita. x 60. 
„ 9. Opistholebes amplicoelus. x70. Pressure preparation. 
„ 10. Gyliauchen tarachodes. x 40. 
„ 11. Bucephalopsis exilia. x50. 
All the figures are drawn from the ventral surface. 
The following letters apply to all the figures: 
Ap. 
Appendix 
P.G. 
Genital aperture 
C.B. 
Cirrus-pouch 
P.P. 
Pars prostatica 
D.St. 
Yolk glands 
P.Ph. 
Prepharynx 
G.S. 
Genital sinus 
R.S. 
Receptaculum seminis 
K.Si. 
Ovary 
T. 
Testes 
M. 
Muscular part of prepharynx 
Vag. 
Vaginal sac 
V.S. 
Vesicula seminalis 
