8 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. 61. 



on one date in July, four in August, and one in September contained 

 no larval cestodes. 



Summary. — PhyllohothHum loliginis found in Mustelus ccmis on 

 three dates in May, 14 fish examined. 10 larval cestodes found; on 

 one date in June, 5 fish examined, 3 larval cestodes found ; on three 

 dates in July, 7 fish examined, 5 larval cestodes found. 



Examinations of M. canis, no examples of P. loliginis found : On 

 two dates in May, 14 fish examined ; five dates in June, 28 fish exam- 

 ined; four dates in July, 6 fish examined; nine dates in August, 1 

 fish examined; three dates in September, 5 fish examined; two dates 

 in October, 3 fish examined. 



Squid were recorded in the food on two dates in May, four in 

 June, and one in October, not including dates on which P. loliginis 

 was found. 

 4. Squalus acmithios. 



The following collections from the spiny dog-fish, with the ex- 

 ception of those made on July 20, were made by Vinal. N. Edwards. 



May 10, 1904; 20; stomachs filled with squid, alewife, and crabs; 

 larval cestodes in one. 6 scoleces, longest 24 mm., in formaldehyde. 



May 19, 1904; 8; stomachs with squid and herring; 6 larval ces- 

 todes from stomach of one. 



May 20, 1904; 15; stomachs with squid and herring; 10 larval 

 cestodes, from 7 to 20 mm. in length. 



June 6, 1904 ; 100 ; stomachs with razor clams, squid and eelgrass ; 

 larval cestodes found in 18 ; 84 scoleces, also a number of fragments 

 without scoleces. 



May 29, 1905 ; 12 ; stomachs filled with young herring ; 1 larval 

 cestode found, length 7 mm. 



May 14, 1906; 7; stomachs filled with squid; 5 larval cestodes 

 found, 1 quite immature, with scolex inverted. 



September 2, 1907; 26, from Provincetown, Massachusetts; squid 

 in stomachs of most of them, fish in a few ; 2 larval cestodes in 

 stomach. 



May 11, 1908; 32 larval cestodes in bottle, length 20 mm., more 

 or less. 



May 20, 1911 ; no food notes. One of the bottles contained squid 

 eggs ; 7 larval cestodes. 



May 22, 1912; 40; stomachs full of squid and " jellyfish '■ {Pleuro- 

 hrachia) ; 1 larval cestode. 



July 20, 1915; 16; spiral valves only brought to the laboratory. 

 All but three of these were examined by Dr. G. A. MacCallum ; crys- 

 talline lenses of fish noted; 4 small larval cestodes found in one, 

 maximum length, in alcohol, 4 mm. This material came from Sand- 

 wich. Massachusetts. 



