86 PROCEEDmGS OF THE NATIONAL MUSEUM vol. 105 



d. dougalli Montagu and Gelochelidon nilotica aranea (Wilson) show a 

 distribution of setae within that of material from the type host, with 

 the exception of tergite VI of the male which has between 4 to 8 

 setae in contrast to the 8 to 10 listed by Clay. However, an examina- 

 tion of a few of the neoparatypes shows that some of the specimens 

 have as low as 6 setae on this segment, and American specimens from 

 the type host have as few as 5 setae on tergite VI. As far as measure- 

 ments are concerned, the material studied is similar to sternae, with 

 the exception of head width measurements on males from Gelochel- 

 idon, wliich have a slightly wider range at the high end. Unfortun- 

 ately, insufficient material is available to determine if these differ- 

 ences are real or not. On host material identified as Sterna forsteri 

 Nuttall specimens have been found that fit sternae perfectly and also 

 fit a new species, 'parmgenitalis . In a brief study of some ornitholog- 

 ical literature, it has been noticed that Sterna forsteri has often been 

 confused with S. hirundo. This may explain the apparent occurrence 

 of two species of Saemundssonia on a single host species. 



Material examined: Scfc? and 19 (neoparatypes) ex Sterna h. 

 hirundo Linne, Great Britain, Kent (AMNH) ; 3 cf cf and 299 ex 

 above host, Virginia, Cobbs Island, H. S. Peters, coll. (HSP) ; 1 cf 

 and 599 ex above host, Ohio, Buckeye Lake, M. B. Trautman, coll. 

 (HSP); 4cf cf and 1$ ex roseate tern (*S'. d. dougalli Montagu), British 

 West Indies, Caicos Islands, Fort George Cay, H. S. Peters, coll. i 

 (USNM, Bishopp No. 15155); 1 cf and 19 ex gull-billed tern (Geloch- ' 

 elidon nilotica aranea (Wilson)), British West Indies, Bahama Islands, 

 Fortune Island, H. S. Peters, coll. (USNM, Bishopp No. 15100); 



1 d* and 19 ex above host, British West Indies, Caicos Islands, Fort 

 George Cay, H. S. Peters, coll. (USNM, Bishopp No. 15154); 



2 cf cf and 399 ex above host, British West Indies, Grand Caicos 

 Island, H. S. Peters, coll. (USNM, Bishopp No. 15164); 1 cf ex 

 Sterna forsteri Nuttall (error) =/S'. h. hirundo Linne, Louisiana, Grand 

 Bayou (CU); Icf and 19, host as above, Minnesota, Leech Lake 

 (SNHM, Kellogg No. 689a); Icf and 19, host as above, Georgia, i 

 Savannah, I. R. Tompkins, coU. (CU). ji 



Saemundssonia lockleyi Clay 



Saemundssonia lockleyi Clay, 1949, p. 11, figs. 17, 24, 25. Type host: Sterna 

 vittata georgiae Reichenow; also recorded from *S. v. hethunei BuUer and S. 

 paradisaea Pontopiddan. 



As previously, no emendations are necessary to the original 

 description. 



Material examined: 2c?'cr and 399 ex Sterna paradisaea 

 Pontopiddan, Alaska, Salmon Creek, R. B.Williams, coll. (det. T. Clay) 



