PLATE 42 

 Figs. 36-38, Polyzoa transJucida. Animal much enlarged 

 Fig. 36. Viewed from left side with test removed. 

 Fig. 37. Same viewed from right side. 

 Fig. 38. Hermaphroditic gonads. 



Figs. 39 and 40, Styela haniharti. 



Fig. 39. Animal with test removed, viewed from the right side and with 

 muscle bands of mantle indicated only in siphonal regions. Natural size. 



Fig. 40. Same viewed from left side, with muscle bands of mantle indicated 

 only in siphonal regions. Natural size. 



Figs. 41-45, Metandrocarpa michaelseiii. 



Fig. 41. Animal much enlarged, viewed from left (lower) side, test removed. 



Fig. 42. Same viewed from right (upper) side. 



Fig. 43. Branchial tentacles, hypophysis, ganglion and gland viewed from 

 inside. 



Fig. 44. Atrial tentacles. 



Fig. 45. Testis masses attached to mantle. 



[502] 



