140 



Aj^nals of the Tkansvaal Mgsp]UM. 



Hosts. — Same as Jiehraeum. 

 Habitat. — Same as Jiehraeum. 



A careful study of my specimens of these two forms shows that they 

 are very dilficult to distinguish one from the other^ and that there are 

 many intermediate forms which might he inchided under either form. 1 

 find that in specimens of males which are plainly chunieum the transverse 

 line connectmg the two anterior longitudinal Ijands running along the 

 cervical grooves is more often not present than present ; also the posterior 

 median dark line does not always run completely into tiie transverse median 

 arched hand. The differences l)etween the type and the variety seems to 

 be mainly one of intensity of colouration. In the females I also find the 

 variations slight, although they are more easily distinguished than the 

 males. 1 find that in the type occasionally the posterior median light 

 coloured area may he extended anteriorly hy two light coloured lines, which 

 may he even confluent as in ebunieum, but these areas are always of a dark 

 bronzy colour in the type instead of a reddish grey as in the variety. The 

 eyes of liehraeuiii seem to be usually of a darker colour than those of 

 ehurneiun, but lii'I)ni('inn never has the ligiit coloured anterior margin to the 

 shield which is present in ehurneuin, nor is tlie body of partly engorged 

 females ever of tiie light colour which seems characteristic of el)unu'i(ni 

 females wben in preservative fluid. 



AMBLYO.MMA YAKIEGATUM. {FABRICIUS.) 

 The Yaeiegatei) Tick. 

 .Icarus cariciialus^ Fabricius (1791:). 

 Lvodes elegaus, Guerin-Meneville (IS'-^O-lSdo). 

 A iiihli/Diu ina veuustuin, Koch (181:1:, 1847). 

 A iiilili/nni nia variegatuni (Fal)ricius) (Neumann, 189G.) 

 riate XII, figures A;, I ; Plate XIII, figures a, h. 



Mate. — Body oval, wider behind, 5 mm. long (rostrum not included) ]jy 

 3.5 to 4 mm. wide. Dorsal shield convex, covering all the ujjper surface, 

 deep reddish brown, with copper-red spots, bordered with metallic green ; 

 -cervical grooves short and deep ; marginal grooves narrow, commencing a 

 little behind the eyes, contouring the posterior margin, from which it is 

 further distant than from the lateral edges, forms the anterior borders of 

 the festoons ; behind the cervical emargination, a copper-red spot, 

 equal to about a third of the width, wider behind, where it 

 is bordered by a curved, brown band ; on each side of this spot is another, 

 irregular longitudinal, concave inward, approaching the eye, on the 

 corresponding side, w4th its anterior extremity, sometimes united to the 

 median spot by a part of its inner margin, and continuing behind by a wide 

 median spot which occupies almost all the width, and is separated from 

 the marginal groove by a brown line, this latter is prolonged on the median 

 line in a very narrow line, and may have another triangular prolongation in 

 front opposite the penultimate festoon ; festoons elongate, reddish brown, 

 bordered with yellowish white the same as all the contour of the body ; 

 punctuations scattered, ordinarily not very deep, unequal ; eyes hemi- 

 spherical, shining, anterior, brownish or yellowish, in orbits. Ventral 



