92 PROCEEDINGS OF THE NATIONAL MUSEUM vol. iob 



italia as in figure I, c, g. The parameres are intermediate in length 

 between those of petersi and meridiana (0.28 to 0.30 mm.). The 

 mesosomal setae are linearly arranged on at least one side. 



Female: Dorsal chaetotaxy as in table 3. Sternite VII is free 

 from the subgenital plate and is slightly longer at the midline than 

 in meridiana. 



Table 3. — Dorsal chaetotaxy of Saemundssonia meridiana and S. snyderi. 



Pterothorax 

 Abdomen II 



III 



IV 



V 



VI 



VII 



In the original description, no specimens were designated as types. 

 A male specimen (the only intact individual containing the genitalia 

 within the abdomen) is designated as lectotype. The remaining 

 2 cf (f (one with genitalia dissected out, and the other with extruded 

 genitalia) and 399 are designated as paralectotypes. 



Material examined: Scfcf and 399 ex Sterna lunata Peale, 

 Laysan Island, J. D. Snyder, coll. (labeled "Type") (SNHM, KeUogg 

 No. 1324); 19 ex above host and locality, Tanager Exped., coll. 

 (BPBM). 



Saemundssonia lobaticeps (Giebel) 



Docophorus lobaticeps Giebel, 1874, p. 109. Hosts: Sterna hirundo and S. fissipe8= 



Chlidonias n. nigra (Linn6). 

 Docophorus pustuUferus'Pic&^ia,, 1885, p. 84. Host: Hydrochelidon surinamensis= 



Chlidonias nigra surinamensis (Gmelin). 

 Philopterus melanocephalus Peters, 1928, p. 225; 1936, p. 17 (part) [nee Bur- 



meister]. Host: Sterna hirundo Linn6 (strsiggler) = Chlidonias nigra 



surinamensis (Gmelin). 

 Saemundssonia lobaticeps (Giebel), Clay, 1949, p. 15, figs. 9, 12, 14, 20, 30, 31. 



Hosts: Chlidonias nigra nigra (Linn6) (type host) ; also, C. h. hybrida (Pallas), 



C. hybrida indica (Stephens), and C. leucoptera (Temminck). 



Specimens have been seen from the type host of pustulijei'us. 

 Minute differences exist, such as in the head width and chaetotaxy 

 (see table 4). However, these differences are of no significance. 

 At the present time, it seems best to consider pustuliferus as a sjmonym 

 of lobaticeps. 



Material examined: 2c?'c?' and 19 ex black tern (Chlidonias 

 nigra surinamensis (Gmelin)), Minnesota, St. Anthonj^ Park (USNM); 

 4cf cf and 19 ex above host, Nebraska, Hackberry Lake, G. E. Hud- 

 son, coll. (CU); 1 cf and 19 ex Sterna albifrons antillarum (Lesson) 

 (straggler from Chlidonias nigra surinamensis), Cuba, Isle of Pines, 



