. Earthworms and their allies . Fig. 6. Genital region of Maoridrilus disiimilis (in wliich species the different organs are essentially as in Notiodrilus tamajusi). The oesophagus is cut away between the xth and xviiith segments to display the various organs, n external orifices of nephridia which alternate in different segments ; the one lettered opens in front of dorsalmost pair of setae, that of segment xvi opens in front of ventralraost pair, ji coiled glands opening on to xvith and xixth segments, .«â . sacs containing long seta, associated with these glands, t spermary of segment; anot
. Earthworms and their allies . Fig. 6. Genital region of Maoridrilus disiimilis (in wliich species the different organs are essentially as in Notiodrilus tamajusi). The oesophagus is cut away between the xth and xviiith segments to display the various organs, n external orifices of nephridia which alternate in different segments ; the one lettered opens in front of dorsalmost pair of setae, that of segment xvi opens in front of ventralraost pair, ji coiled glands opening on to xvith and xixth segments, .«â . sacs containing long seta, associated with these glands, t spermary of segment; another pair in an exactly similar position in segment xi. Behind spermaries are funnel-shaped openings of sperm ducts wldch are seen running along the body to their external orifice on xviiith segment, sperm sacs behind the posterior of these and in segment xiii is seen tlie large ovary corresponding in position to the spermary and opposite to each ovary tlie oviduct. (X 3.)
Size: 1640px × 3048px
Photo credit: © The Bookworm Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1910, bookpublishercambr, bookyear1912
