464 



WINTERTON G. CURTIS, 



Description of Figures. 



Plates 31 and 32. 



Reference Letters. 

 The figures have been reduced ^ j^ in the reproduction. 

 a, h, b', d stages of the growing np nuclei of parenchyma 



ovum 

 acm circular muscles of the atrium 

 aep epithelium of the atrium 

 aim longitudinal 



of the 



muscles 



atrium 

 ap atrial pore 

 at atrium 



hm basement membrane 

 C cell of vitellaria near wall of 



oviduct 

 cl circular layer of penis lumen 

 cmp circular muscles of penis 

 cod common oviduct 

 dep dorsal epithelium of body 

 e enlargement at the meeting of 



the vasa deferentia 

 en enlargement in vas deferens 

 ep epithelium 

 /", f Stainable areas in the large 



muscle fibres 

 9 gut 

 / lumen 



Imp longitudinal muscles of penis 

 m dermal muscles 

 mo mouth 

 n nuclei 

 nc nerve chord 



od oviduct 



ov, Ov\ ov" portions of the ovary 



2) penis 



ph pharynx outline 



pi penis lumen 



ra radial fibres of penis lumen 



rh rhabdites 



rvd right vas deferens 



sm sperm-mother cells 



S2)C spermatide in testis 



spg spermatozoa 



sv seminal vesicles 



tc, tc' testicular canals 



te testis 



tp tunica propria 



uc uterus cavity 



um muscles of uterus 



ut uterus 



V vacuole 



va vagina 



vd vas deferens 



vep ventral epithelium of body 



X an irregular outgrowth from the 



vas deferens 

 yc cells of yolk-glands 

 ygl yolk-glands 



