292 Genus Ixodes 



slender (110 /x I.), external article 5-cusped ; palps slender, inserted very low 

 down, article 2 almost twice as long as 3. Legs : coxa I with short spur at 

 each posterior angle, the inner spur longer ; a tuberosity external to the 

 others, scarcely visible on coxa IV. Legs slender, relatively long, tarsi 

 tapering, pad two-thirds the length of claws. 



Found on Sciurus gordoni, S. rufigenis, S. striatus and Felis tigris, at 

 Bharuo, Mooleyis, Tarrawaddy and Terinzo in Upper and Lower Burma, 

 according to Supino. 



Ixodes imperfectus Neumann, 1899, p. 118 (no figure); species founded on 2 

 nymphs, having the following characters (condensed from Neumann) : 



Nymph : Body 2-1x1-2 mm. Scutum oval, glossy (0-56x0-51 mm.), with 

 lateral borders almost straight along their anterior half ; cervical grooves well 

 marked, almost attaining the posterior border ; lateral grooves clearly defined, 

 straight, divergent behind ; punctations fine, distant. Venter : sexual grooves 

 divergent, straight, long ; anal grooves parallel behind ; many fine punctations. 

 Capitulum (033 mm. I.) with base broader than long, narrowed conically 

 in front ; pointed cornua ; auricula forming a retrograde spine beneath the 

 postero-dorsal angle ; hypostome narrow, lanceolate, 2 | 2, the external teeth 

 long, pointed ; palps long, narrow, article 2 longer than 3. Legs long ; coxae 

 with a spine at the postero-external angle, decreasing in size from pair I to 

 IV ; a stouter spine at the postero-internal angle of coxa I ; tarsi thick, long 

 on pairs I and IV, tapering gradually ; pads as long as claws. 



Host : LHdelphys pusilla, Brazil (Goeldi coll.). 



Ixodes inermis Neumann, 1901, p. 283 (no figure). Included under doubtful 

 species because the description is inadequate. 



Male : unknown. 



Female : Body 4 mm. long (capitulum included), yellowish. Scutum reddish 

 brown, light-coloured, glabrous, as broad as long, lozenge-shaped (the lateral 

 angles toward the middle of the length), no lateral grooves, punctations 

 numerous ; surface slightly shagreened. Dorsum and venter bearing short 

 hairs ; anal grooves diverging considerably. Base of capitulum more than 

 twice as broad as long ; hypostome lanceolate, bearing two marginal rows of 

 stout teeth and numerous denticles in front ; palps relatively short. Coxae 

 unarmed ; tarsi fairly long, humped near their extremities. 



From Neumann's description, based on 3 $ s and 4 o s collected by Z. 

 Wagner, locality not given (Berlin Museum). (Two <Js identical with Ixodes 

 ricinus were found in the same lot, but differed too much from the ^s to 

 permit of their being considered as belonging to the same species.) 



Ixodes juvenis Neumann, 1899, p. 124 (no figure). Species founded on 6 nymphs 

 and 1 larva, having the following characters (condensed from Neumann) : 



Nymph : Body ovoid (2 x 1-1 mm.), dark brown. Scutum rounded, slightly 

 broader than long, of the same colour as the rest of the body ; punctations few, 

 very fine ; some short hairs ; cervical grooves attaining the posterior border. 

 Dorsum bearing long hairs, especially on the borders ; marginal groove 



