124 



THE FUR SEALS OF THE PBIBILOF ISLANDS. 



(l 



Kg. 23. 



largest of which measured If inches long; "they presented the peculiarly flexed state 

 of the chylous intestine or stomacli, as described by Dujardin." Oobbold determined 

 the worms as " characteristic specimens " of A. simplex Eudolphi, and states that 

 "yl. delphini of Eudolphi" must clearly be regarded as identical with this species. 



Regarding Cobbold's statements, it may be remarked that they were made two 

 years before Krabbe determined what a " characteristic specimen" of A. simplex was, 

 and also, as his later articles show, he did not clearly understand the history of A. 

 delphini. His determinations, therefore, are worthless. Oobbold (1876^, p. 42) refers 



again to the specimens collected by Anderson, and states 

 they correspond to A. simplex of Dujardin. 



Krabbe (1878, p. 47-19, rasum^, p. 12) referred to A. sim- 

 plex all the ascarides found in the toothed whales from the 

 coast of Denmark, Faroe, and Crreenland, namely, in two 

 specimens of Lagenorhynchus albirostris from Denmark, iu 

 seven specimens of Beluga leucas {=Delphinapterus leucas) 

 from Greenland, in one specimen of Hyperoodon rostratus 

 from Faroe, and in three specimens of Monodon monoceros 

 from Greenland. He also had some young specimens of Ascaris from Phocaena com- 

 munis {=P.phoGaena),'hut he could not definitely state that they belonged to A. simplex. 

 In one Beluga teMcas 177'specimens were taken, about one-third of which were males; 

 the males measured 130"'"', the females 200""". This form {A. simplex) belonged to 

 Schneider's Group A (intermediate lips absent, labial dentigerous ridge present). 

 The lips were of nearly equal size; each bore anteriorly two lobes (fig. 23), which 

 were constricted from the base and armed on their inner surface with a row of small 

 teeth ; on the end of the tail of the male (tig. 24) there were four pairs of conical 

 papillae, of which the outermost 

 was longest; between these and 

 the cloaca were found two short 

 papillae, occasionally apparently 

 united in a double paijillae; on 

 each side anterolateral of the clo- 

 aca were six short papillae, then 

 followed on each side one row of 

 long papillae or two rows which 

 were closely approximate. Krabbe 

 obtained from Koren specimens of 

 the worm which Creplin had de- 

 scribed from Balgsnoptera rostrata 

 as Ascaris angulivalvis, but was 

 unable to notice any speciflc dif- 

 ferences between these and the form he (Krabbe) had determined as A. sim,plex. 

 The following year Oobbold (1879, p. 426) reverts to the species A. simplex, but 

 has decidedly confused the history of the worms he discusses. He states that A. 

 simplex was originally found in the dolphin of the Ganges, and later by Albers in the 

 common porpoise; he admits A. Dussumierii as distinct from A. simplex, but claims 

 that "Lebeck's A. delphini" is identical with the latter species; yet the worms from 

 the dolphin of the Ganges which he (Oobbold) examined and determined according to 



Fig. 2i. 



