692 



frequently found exserted. G-enital pore a little way in front of ventral 

 sucker, close in the fork of the intestine. Ovary small, spherical at 

 end of penis-sac, above, generally close behind and to right of ven- 

 tral sucker. Uterus extends back to posterior end and then forwards 

 again between testes and coeca, broad and containing many layers of 

 eggs. Vagina enlarged, with glands. Vitellaria nearly whole length 

 of coeca, between latter and body-wall but also partly underlying 

 and extending across the body above. Posterior, median excretory- 

 duct large, secondary, lateral branches often very evident. Eggs 

 0,048 X 0,024. 



To this genus belongs, I have no doubt, Distomum boscii Oobbold 

 (Trans. Lin. Soc. 1859. PL 63. fig. 6). 



Mammals. 



87) Lecithodendrium posticum. 



Intes. Vespertilio suhtilis Say (Little Brown Bat). 

 New species: piosticus^ hinder. Elliptical, oval, spindle-shaped etc. 

 One regularly elliptical measured 0,89X0,53, oral sucker 0,117, 

 ventral sucker 0,103, in the middle of the body. The oral sucker is 

 generally the larger although the reverse is occasionally true. Pha- 

 rynx, oesophagus, two diverging club-shaped coeca directed towards 

 the testes. Testes globular, wide apart, each side of ventral sucker. 

 Ovary smaller, in angle between ventral sucker and right testis. A 

 vesicula seminalis of about same size as sucker occupies space between 

 ventral sucker and intestinal coeca. Vitellaria right and left from 

 oesophagus and caeca, sometimes reaching phar3aix, sometimes re- 

 stricted to coeca. Uterus behind level of testes. Egg 0,028 X 0,017^ 

 variable. Excretory duct divides immediately behind acetabulum. 



Li Centralbl. f. Bakt. Bd. 34. 1903. p. 827 I referred this worm to 

 L. diilostomum Mehl. (= D. ascidioides van Ben.) but it differs in 

 having a small mouth-sucker instead of a very large one. L. ascidia 

 van Ben. has small, nearly equal suckers but the vitellaria are lateral, 

 behind the acetabulum, as also in L. hirsutum Looss. In all of 

 these (including the worm here described) and in L. oviforme Poirier 

 the ovary is compact, at the side of or behind the ventral sucker; 



. while in L. glandulosum (= L. cliefrenianum) Looss , L. sphaerula 

 Looss, L. obtusion Looss, and in No. 88 (next to be described) it is 

 lobed and anterior to the sucker. D. somateriae Levinsen, with its 

 acetabulum and genital glands placed far back, and also from the 

 position of its genital opening, vitellaria and uterus, belongs to a 

 different type, as do perhaps also D. claviforrne Brandes and D. ru- 

 hellum Olsson, both of which are imperfectly known. Pycnoporus h£- 



