NC- 



Fig. 32. — Internal structure of Onychophora, and later development of the 

 coeloniic sacs. 



A, general view of internal anatomy of Peripatoidcs twvae-acalaiidiac Hutton, 

 female, dorsal view ; muscles, nephridia, peripheral nerves, and dorsal blood 

 vessel omitted. B, tracheal pit of Peripatopsis capcnsis Grube and respiratory 

 tubules extending inward from it (from Schneider, 1902). C, section of embryo 

 of Peripatus edwardsi Blanchard, showing constriction of coelomic cavity into 

 dorsal gonadial compartment (a) and lateral nephridial compartment {h) ; rudi- 

 ments of coelomoduct {c, d) not yet united (from Kennel, 1888). D, same, 

 later stage, dorsal compartment (a) of coelomic sac (which later disappears 

 except in genital somites) and nephridial compartment {b) entirely separated, 

 coelomoduct {c, d) open to exterior (from Kennel, 1888). E, section of embry- 

 onic somite of genital outlets, coelomic sacs narrowed but not divided as in 

 other segments (C, D), continuous from gonads (a) through coelomoducts {d) 

 to exterior (from Kennel, 1888). F, male reproductive organs of Peripatopsis 

 blainvilici Gay-Gervais (from Bouvier, 1902, with accessories omitted). G, sper- 

 matophore of same (from Bouvier, 1902). 



a, dorsal gonadial compartment of coelomic sac ; AcGld, genital accessory 

 gland; AlCnl, alimentary canal; Ant, antenna; AntNi', antennal nerve; b, ne- 

 phridial compartment of coelomic sac ; Br, brain ; c, mesodermal component of 

 coelomoduct ; Com, nerve commissures ; Ct, cuticula ; d, ectodermal component 

 of coelomoduct; Dej, ductus ejaculatorius; E, eye; Epd, epidermis; Epdm, 

 epididymis ; mcl, muscle ; NC, nerve cord ; Nu, nucleus ; Od, oviduct ; Oe, 

 oesophagus, OP, oral papilla ; Ov, ovary ; Phy, pharynx ; Res, reservoir of 

 slime gland ; Rcct, rectum ; SlGld, salivary gland ; SlmGld, slime gland ; Sphr, 

 spermatophore ; Tes, testis ; tp, tracheal pit ; Tra, tracheal tubules ; Utrs, uteri ; 

 Vd, vas deferens; Vent, ventriculus; VO, ventral "organ"; Vsm, vesicula 

 seminalis. 



(71) 



