412 
New Species of Ticks 
showing a broad U-shaped depression extending across the base pos¬ 
teriorly, the arms of the U reaching forward toward the base of the 
palps. Venter', spiracle larger (0‘55 mm. 1.) than coxa IV, and much 
nearer to the coxa. Legs more massive, coxa I with large postero¬ 
external spur prolonged in a point overlapping coxa II, with sharp 
internal angle; coxa II angular internally (rounded in the type). Tarsi 
tapering less gradually. 
Described from (N. 647) 3 $’s, taken from a large Opossum, Tabasco 
de la Frontera, Mexico, in the month of May {ex Hon. N. C. Rothschild’s 
collection). 
Amblyomma v-notatum n. sp. 
Fig. 5. 
Male: unknown. 
Female (unfed): 5x4 mm. Body contour ovoid, broadest at a 
point two-thirds along the body-length (measured from in front). 
Colour of chitinized parts generally maroon-brown. Hairs practically 
absent. Marginal groove and festoons sharply defined. Scutum 
(2’6 X 2 5 mm.) cordiform, deeply emarginate, scapulae rounded, 
Fig. .5. Amhhjomma \-notatiim $ ; capitulum and scutum (the ornate portions comprised 
posteriorly within the dotted lines), capitulum with scapula in profile (palp turned 
slightly outward), hence foreshortened ; ventral aspect of capitulum with coxae and 
vulva; spiracle, tarsus 4 and anal groove. F. M. H. del. 
