12 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.61. 



Sea-ravens, in which no examples of P. loliginis were found, were 

 examined as follows : On three dates in January, 9 fish examined ; one 

 date in February, 5 fish examined; three dates in April. 5 fish ex- 

 amined; six dates in May, 6 fish examined; four dates in June, 4 fish 

 examined ; one date in July, 1 fish examined ; five dates in October, 7 

 fish examined : five dates in November, 10 fish examined ; three dates 

 in December, 7 fish examined. 



Practically all of the examinations of this host were made by 

 Vinal N, Edwards. 



Squid recorded in the food on two dates in May. 



11. Lopholatilus chamaeleonticeps. 



July 29, 1899; 2 larval cestodes, from intestine.^ 



12. Merluccius hilinearis. 



July 11, 1900 ; 3 larval cestodes.*^ 



July 2, 1910; 12; squid in stomachs; 1 larval cestode. This speci- 

 men was very active. AVhen first seen the scolex and a part of the 

 neck were invaginated; later they were everted. It was still active 

 after it had been lying in sea water for three hours. The neck was 

 a translucent light brown, or tan color, the scolex and body white. 

 The bothria attached themselves to other parasites in the dish and to 

 the bottom of the dish. The neck was very contractile, changing 

 quickly from a thin, linear shape to a thick, crumpled mass. The 

 body, also, was very active, much of the time being elongate, tapering 

 and whip-like. 



Whiting were examined, in most cases by Vinal N. Edwards, with- 

 out finding P. loliginis, as follows : On seven dates in May, 34 fish ; 

 two dates in June, 3 fish ; three dates in July, 16 fish ; eight dates in 

 August, 52 fish; two dates in September, 2 fish; nineteen dates in 

 October, 132 fish ; thirty-eight dates in November, 331 fish. 



Squid were recorded in the food on three dates in May, one in June, 

 one in July, three in August, five in October, and three in November. 

 13. Pollachias virens. 



July 1, 1912; 18; food, squid; a few larval cestodes, evidently in- 

 troduced with the food. 



June 9, 1913 ; 6 ; stomachs full of squid ; 9 larval cestodes. 



Other examinations of pollock, for the most part made by Vinal N. 

 Edwards, in which P. loliginis was not found : On one date in March, 

 4 fish ; eleven dates in April, 29 fish ; twelve dates in May, 44 fish ; 

 eight dates in June, 63 fish ; two dates in July, 2 fish ; four dates in 

 August, 13 fish ; seven dates in September, 7 fish ; twenty-eight dates 

 in October, 54 fish; eight dates in November, 21 fish; one date in 

 December, 1 fish. 



Bull. U. S. Fish Comm. for 1899, p. 471, pi. 20, figs. 233-234. 

 ' Idem, p. 474, pi. 20, figs. 231-232. 



