166 



Genus Ixodes 



small, circular, brown. Capitulum long (0"8 mm.) ; dorsal base subtrian- 

 gular, with very prominent cornua ; porose areas large, circular, separated 

 by a space equal to their diameter; auricula forming a prominent 

 horn. (Digit 1 .) Hypostome (absent^ but probably sharply lanceolate as 

 in /. acuminatum). Palps long, slender, narrow ; the first article slightly 

 prominent externally on the ventral surface, the second slightly longer 

 than the third. Legs close together anteriorly, similar to those of { / 1 , 

 relatively slenderer. 



Neumann's description is based on a </" and a ? found copulating 

 upon Hesperomys sp. ? (Muridae) in Guatemala by J. Rodriguez. 



Fig. 159. I. minor $ : capitulum in dorsal and ventral aspects, spiracle, tarsus 4, scutum 

 and coxae. N.B. The dotted lines on the scutum indicate the lateral and cervical 

 grooves as described by Neumann ; they are invisible in the mounted specimen of the 

 type. (Neumann coll. Original, G. H. F. N. del.) 



7. IXODES BOLIVIENSIS Neumann, 1904. 



Fig. 160 (original). 



Lit. : Neumann, 1904, pp. 457, 458 (no figure). 



Male (Fig. 160): Body oval, broader posteriorly, L. l - 6, W. 1"1 mm. 

 Scutum convex, reddish brown, marginal fold narrow ; cervical grooves 

 almost obsolete ; lateral grooves absent ; two groups of deep punctations : 

 one group tracing a pseudo-scutum, the other group on a median circle 

 towards the posterior third, elsewhere almost obsolete ; a few rather long 

 sparse hairs. Venter reddish brown, with long hairs, especially lateral 



1 Digit, slender, 100 /i long ; dorsal process crescentic, longitudinal and with retrograde 

 points, external article with five teeth, larger and more separated proceeding toward the 

 base (as in J. acuminatum). 



