LOXOSOMA LOXALIiXA AXD LOXOSOMA SALTANS. 139 
openings could nob be traced. No sign of ciliation of any 
part of these ducts is apparent in the living L. saltans. 
In L. loxalina the excretory organs are on a rather 
different plan. 
In L. saltans the (iii) rectum takes an important part in 
excretion, certain cells accumulating excretory products in 
vacuoles which presumably burst iuto the cavity of the rectum. 
(6) In L. loxalina the reproductive glands consist of a 
pair of gonads which may be hermaphrodite, with ducts joining 
in the median plane where there is a shell-gland, whence a 
median duct runs to open into the atrium between the 
epistome and the lophophoral hood. 
In L. saltans the gonad is single and median, with the 
duct opening on a papdla between the epistome and lopho- 
phoral hood. 
(7) In neither species is there any lateral expansion of the 
body into aim. The general mesodermal tissue is more 
abundant in L. loxalina than in L. saltans. 
1 desire to express my sincere thanks to Professor W. C. 
McIntosh, LL.D., F.R.S., for his kindness in identifying the 
Maldanid worm upon which L. saltans was found; to Dr. 
(I. F. Harmer, F.K.S., for certain references to the literature 
of Loxosoma ; to Miss Marie Krull for assistance in the 
preparation of the specimens ; and to Miss Dorothy Thursby 
Pelham for drawings numbered 4, 5 and 6 upon Pis. 6 and 7. 
Kkfekencks. 
1. Annandale, N. — “The Fauna of Brackish Ponds at Port Canning, 
Lower Bengal (‘ Loxosoinatoides ‘ Rec. Ind. Mus.,’ 2, pi. i, 
p. 14, 1908. 
2. Van Beneden et Hesse. — “ Recherches sur les Bellodes et les 
Trematodes marins ” (‘ Memoirs I'Academie,' le 
8 Novembre, 18dl) ; ‘ Menioires de I’Academie royal de Belgique,’ 
t. xxxiv, 1864, pp. 83-84, pi. xii,figs. 12-20. 
3. Elders, E. — “ Zur Kenntnis der Pedicellinen," ‘ Abhaud. d. Kon. 
Ges. d. Wiss. Gottigen,’ 1890. 
