Measurements : S. lari from Larus main-nus 



d 9 



Head Length .60 .60 



Head Width .60 .66 



Prothorax Width .33 .36 



Pterothorax Width .47 .51 



Abdomen Length .82 1.06 



Abdomen Width .82 1.02 



Total Length 1.78 2.25 



Peters (1936) records this species from the Great Black-backed 

 Gull in Massachusetts and New Hampshire and Brimley (1938) from North 

 Carolina. 



Measurements : S. lari from Larus argentatus 



o" 9 



Head Length .58 .61 



Head Width .58 .66 



Prothorax Width .34 .36 



Pterothorax Width .48 .52 



Abdomen Length .82 .93 



Abdomen Width .87 .93 



Total Length 1.75 1.92 



Peters (1936) reports this species from Connecticut, Florida, 

 Louisiana, Massachusetts, Maine, and South Carolina; Brimley (1938) 

 from North Carolina; and Stirrett (1952) from Ontario. 



Measurements: S. lari from Rissa tridactyla 



d 9 



Head Length .55 .61 



Head Width .54 .63 



Prothorax Width .31 .36 



Pterothorax Width .43 .51 



Abdomen Length .72 .84 



Abdomen Width .79 .93 



Total Length 1.59 1.83 



Saemundssonia latiaaudata (Rudow, 1869) 



Docophorus laticaudatus Rudow, 1869. Beitr. Kenntn. Malloph.: 



12. 

 Type host: Thalasseus sandvicensis (Latham) — Sandwich Tern. 

 New England host: 

 Thalasseus maximus (Boddaert) — Royal Tern. 



Males of this species are characterized by the basal plate with- 

 out a distal cross-bar; parameres greater than .20 mm in length; 

 mesosomal setae in a linear arrangement, occasionally clustered on 1 

 side; inner face of paramere head with a slight basal concavity; 

 dorsal anterior plate .16-. 18 mm in width; 4-9 setae on margin of ab- 

 dominal sternite VI. Females of S. latiaaudata lack an emargination 



150 



