KUN GU. SV. VET. AKADEMIENS HANDLINGAR. BAND 63. NIO 9. 25 



Explanation of the plate. 



Fig. I. Metrocarpa leachi Savigny n. gen. Young zooid, seen from the dorsal side. X 45. 



at. Atrial aperture. b. Bud. bp. Brood-poucli. br. Branchial aperture. o. Ovary. st. Stalk. t. Testis. 

 » 2. The same. Full-grown zooid, seen from the dorsal side. X 45. 



bp. Brood-pouch. o. Ovary. od. Ovidtict. t. Testis. 

 » 3. The same. X 45. 



at. Atrial aperture. bp. Brood-pouch. br. Branchial aperture. f. Outcr follicle, tlirovvn off. t. Testis. 

 » 4. The same. X 45. 



bp. Brood-pouch. em. Embryo, t. Testis. 

 » 5. Botryllus schlosseri Pallas. Young zooid, seen from the left side. X 45. 



at. Atrial aperture. b. Bud. br. Branchial aperture. o. Ovary. od. Oviduct. /. Testis. 

 » G. The same, seen from the ventral side. X 45. 



b. Bud. e. Endostyle. o. Ovary. i. Testis. 

 » 7. The same. Young zooid, seen from the left side. X 45. 



at. Atrial aperture. b. Bud. br. Branchial aperture. o. Ovary. od. Oviduct. 

 » 8. The same. Full-grown zooid. Part of the reproductive organs. X 45. 



ef. Cup-shaped fold whith an embryo, em. Embryo. /'. Outer follicle. thrown off. o. Ovary. od. 



Oviduct. t. Testis. 

 » 9. The same. Full-grown zooid, seen from the left side. X 15. 



at. Atrial aperture. br. Branchial aperture. ef. Cup-shaped fold. em. Embryo. /'. Outer follicle. 



thrown off. t. Testis. 

 » 10. The same, showing the testis and the cup-shaped folds from the inside, the embryos having been 



removed. X 45 



ef. Cup-shaped fold. t. Testis, vd. Vas deferens. 

 » 11. The same. Full-grown zooid, seen from the left side. X 45. 



at. Atrial aperture. br. Branchial aperture. ef. Cup-shaped fold. em. Embryo, t. Testis. 

 » 12. The same. Full-grown zooid, seen from the left side. X 45. 



at. Atrial aperture. br. Branchial aperture. ef. Cup-shaped fold. 1. Larva. t. Testis. 



Tryckt den 17 januari 1923. 



K. Sv. Vet. Ak ad. Handl. Band. 63. N:o 9. 



