Plate V. 



Fig. 43. Apex of a gonophore (cT) in Stylaster roseus, containing spermatocytes in process of trans- 

 formation. + so 1. 



— 44. Early stage in the development of a seminal duct in Stylaster norvegicus. 4S°/ t . 



— 45. Longitudinal section through an almost full-grown seminal duct in Stylaster norvegicus. i ; " ,. 

 46. Median longitudinal section through a gonophore (°j with ripe ovum in Stylaster gemmascens. 3°° x . 



— 47. Median longitudinal section of a gonophore | C ) with ripe ovum in Stylaster roseus. 1; " ,. 



48. Transverse section of a gonophore ($) near the distal end of the spadix in Stylaster roseus. '3° ,. 



— 49. Transverse section of the spadix close beneath the ovum in Stylaster gemmascens. l 3f/ I . 



— ^o. Median longitudinal section through a gonophore with advanced planula larva in Stylaster 



gemmascens. 1 i° l ' 1 . 



