Figure 7. View combined from sections of a sagittal series, showing 
together organs which are on different levels, mouth, ventral sucker, 
genital organs and excretory pore are median while the intestine and 
the collecting and recurrent excretory vessels are lateral. Magnified 
twenty-seven diameters. Crs. cirrus sack. Exbl. excretory bladder; 
excy. collecting vessel of excretory system; exrv. recurrent vessel 
of excretory system; gpo. genital opening; Ic. canal of Laurer; mt. 
metraterm; ny. nerve collar; oes. oesophagus; pml. longitudinal 
muscles of the parenchyma; ta. anterior testis; tp. posterior testis; 
utsk, uterine sack; vd. vas deferens. From Osborne. (Reproduced 
by permission of author and Wistar Institute of Anatomy.) 
