398 WILLIAM NICOLL. 
Cryptocotyle concava (Crepl.) . Phalacrocorax Intestine, 
eraculus. > ceca and 
) rectum. 
Gymnophallus dapsilis Nicoll . Oidemia nigra .) Bursa 
Oidemia fusca .)  Fabricii. 
Maritrema humile Nicoll : . Totanus calidris . Intestine. 
Maritrema lepidum Nicoll. . Larus argentatus . Intestine. 
Maritrema gratiosum Nicoll . . Larus ridibundus 
) 
Pelidna alpina | 
AXgialitis hiaticula. + Intestine. 
Hematopus | 
ostralegus . ) 
Sub-family SrerHaANOPHIALINA, n. sub-fam. 
Genus Stephanophiala, n. g. 
Stephanophiala laureata (Zeder). Pl. 9, figs. 1-5. 
Distoma laureatum Zeder, ‘Nacht. z. Nature. d. Hinge- 
weidew.,’ p. 192; Rudolphi, ‘EHntoz. Hist.,’ 1, p. 413; 
‘Synops.,’ pp. 113 and 413; Dujardin, ‘ Hist. d. Helm- 
inth,’ p. 435; Olsson, ‘Kgl. Sv. Vet. Akad. Handl.,’ 
1876, Nr. 1, p. 21, Pl. iv, figs. 52-54; ? Linton, ‘ Rept. 
U.S. Commiss. Fisheries for 1889-189V (published 1893), 
p. 953, fig, 26-30, 
Distoma farionis Mill. Blanchard, ‘Mem. Soc. Zool. 
France,’ iv, 1891, pp. 481-3, fig. 38. 
Crepidostomum laureatum (Zed.) Braun, ‘ Annal. 
Hofmus. Wien.,’ xv, pp. 281, 232; Looss, ‘Zool. Jahrbiich. 
Abtheil. Syst.,’ xvi, 1902, p. 452. 
This fairly frequent parasite of the common trout (Salmo 
fario) has been known for many years, and it has been 
found by various observers, who have each contributed 
towards a knowledge of the species, but no connected account 
has appeared since Olsson’s description in 1876. Although 
not entirely free from error, this description is fairly accurate, 
but it is not sufficiently detailed for modern requirements, 
