46 SJÖSTEDTS KILIMANDJARO-MEBU EXPEDITION. 15: 4. 



Nirinus kiliuiandjareiisis n. sp. 



(PI. 7, tig. 3.) 



One female recorded from Buteo aiigiir but is more likely a straggler from 

 Colymhus capeiisis which the collector notes as lying near the skin of Buteo. The 

 parasite obviously belongs to the group ohscurosuturati of Nirmi characteristic of 

 water bhds. 



Female. Body, length 2.1 mm.; width 0.4 mm.; a handsome, slender, well mark- 

 ed form. Head, length 0.5 mm., width 0.34 mm., long, narrow, flatly-rounded front, 

 three longish hairs on each temporal margin behind the eye; Signatare with anterior 

 part distinctly colored, but fading out posteriorly; antennal and clypeal bands strongly 

 colored, and also temporal margins. Prothorax quadrangular with posterior margin 

 straight; well-marked blackish-brown sub-marginal bands. Metathorax angulated on 

 abdomen with five or six pustulated hairs along each postero-lateral margin. Abdo- 

 men long, slender, sub-paralled sided; blackish, segmental sub-marginal bands and 

 dorsum of segments pale brown due to fusing, or nearly fusing, along median line 

 of brownish, quadrangular lateral transversal abdominal blotches; indications of a 

 median, longitudinal, vmcolored line especially on segments 2 — 4; pair of small but 

 distinct pustulations in middle of posterior margin of each segment; posterior Seg- 

 ment narrow and with entire, narrowly-rounded margin; longish single hairs in 

 postero-lateral angle of each segment except first and second. 



Kilimandjaro-Meru: Natron Lakes. 



Nlrmus opisthotomiis n. sp. 



(PI. 7, %. 4.) 



Males and females from Hinianto'pus hiniantopus (two individuals). A new form 

 well marked and distinguished by the character of the abdominal blotches and the 

 truncate male abdomen but otherwise much resembling typical furvus and others of 

 the group obscurosuturati characteristic of wading birds. 



Male. Body 1.44 mm., width 0.4 mm.; with well defined lateral transverse 

 abdominal blotches and head and thorax brown with darker lateral margins. Head 

 length 0.4 mm., width 0.33 mm., rather broad truncate clypeal front, suture behind 

 clypeus fairly distinct, one very long and one long hair in temperal angle.s, trabe- 

 culae rather prominent; whole head brown, with well-marked, blackish-brown margi- 

 nal bands. Prothorax nearly quadrangular with one longish hair in each postero- 

 lateral angle; clear brown with sharply marked, blackish-brown lateral marginal bands. 

 Metathorax with flatly rounded posterior margin; two long hairs in each postero- 

 lateral angle, and three hairs successively smaller from outer one to inner one on 

 posterior margin each side of the middle; segment clear brown with sharp blackish 

 brown lateral margins. Abdomen, narrow elliptical with blackish-brown segmental 

 lateral margins and well defined paler brown large lateral transverse blotches cove- 

 ring most of surface but not meeting at middle and hence leaving distinct rather 

 broad uncolored median longitudinal line; uncolored lateral Spaces at the sutures; 

 the lateral blotches on segments 6—8 narrower and hence leaving wider uncolored 



