154 



THE FUR «EALS OF THE PRIBILOF ISLANDS. 



Baird (1853, p. 18) cites A. osculata in tbe collection of tbe British Museum, the 

 specimens comiug from the stomach of Phoca vitulina (collection of Siebold) and of 

 P. barbata { = Erignathus barbatus), collected by Leach at Bafifius Bay. 



Schneider (18GG, p. 44) appears to be the first to clearly define this worm and to 

 figure it (see figs. TG and 77) ; his diagnosis reads: 



C. Lijjpen oliue Zahuleistc mit Aurikclu uud Zwischoulippcu. 



14. ASCARIS OSCULATA. K. 



9 50"" 



^ 40""". 



Eckzahu kleiii luid Htuiiipf, hinterer Rand dcr Aurikeln Itegiunt mit eiiiem couvexcii Bogeu. 

 Rinne tief. An der Basis der Lippeu iind Zwiscbenlippeu nnter der Haut liiul't rings beruui eiu car- 



Fig. 79. 



vZl'' 



Fit;. 81. 



minrother Pigiuentstreif. S<'b\vanz den J H Papillcn hiuter deni After, 1 uud 2 mit kegelformiger 

 Puli)a, 7 und 8 l)ilden eiue ])oppclj)apille, dann folgen vor d em After 20 iind mehr Papillen uuregel- 

 mliswig zu 2, 3, und 4, und zuletzt eine Reihe Papillen. Im Gan/.en 70 geziihlt. 

 f'hoca groenlandira. Darm. 



Bastain (1860) in his extensive discussion of the anatomy of nematodes refers a 

 number of times to a worm determined as A. osculata. One of his figures of the 

 anterior extremity shows three lips, but no intermediate lips; he states that the 

 intestinal caecum is present, but the oesophageal caecum absent. It is not at all 

 improbable that Bastain had some other form, possibly A. (lecipiens, as suggested by 

 von Liiistow, rather than .4. osculata. 



Krabbe (1878, p. 45) mentions the worm from various hosts. It was found ten 

 times in Phoca groenlandica, in Greenland, by Vabl, March, Olrik, and Pfatt'; in 



