T. acuminatus 



161 



for nigricans to fall within that species, but the opinion of so high an 

 authority as Professor Neumann leads us for the present to refrain from 

 referring it to I. ricinus. (From I. rasus, to which Neumann states 

 that it is allied, it is immediately distinguishable by the anal grooves.) 



3. IXODES ACUMINATUS Neumann, 1901. 

 Figs. 151 and 152. 

 Lit. and Icon. : Neumann, 1901, pp. 287, 288, Figs. 7, 8 (here reproduced). 



Male : unknown. 



Female (Fig. 151), young: Body elongate oval, L. 2 mm., at least 

 twice as broad (1"2 mm.) toward the posterior third as it is in front, 

 yellowish red. Scutum longer than broad (1'3 x 0"9 mm.), lozenge- 

 shaped oval, antero-lateral borders subrectilinear, divergent, the portion 

 bounded by the posterior rounded border forming f of its length ; 

 emargination slight : surface glossy, without cervical grooves, the latter 

 fusing with the origins of the lateral rectilinear grooves, which are 

 parallel to the borders and end at their posterior curved portion ; punc- 

 tations numerous, very fine ; some scattered hairs. Dorsum covered by 

 long hairs, especially in the posterior portion ; deep marginal grooves 



Fig. 151. Fig. 152. 



Fig. 151. I. acuminatus ? : venter. (Neumann, 1901, Fig. 7.) 



Fig. 152. I. acuminatum ? : H, hypostome, C, digit, 120 /j. I. (Neumann, 1901, Fig. 8.) 



