AXXALS OF THE TeAXSVAAL MuSEUM. 



103 



oval; length (with rostrum) 1.5 mm., width 0.9 mm.; colour, bluish 

 grey. Shield, covering anterior half of body, wider than long; 

 antero-lateral margins convex, postero-lateral margins concave; 

 posterior angle broadly rounded; cervical emargination shallow; 

 cervical grooves widely separated, very distinct, hrst convex, then 

 straight to postero-lateral edges; surface divided into polygonal areas 

 by shallow grooves — no punctuations ; eyes very large, hemispherical, 

 dark coloured, shining, in orbits at lateral angles; colour light 

 yellowish brown, varying in depth of colour and sometimes with 

 darker spots. iJorsaJ smface iV , i) with short whitish hairs; three 

 grooves, median straight, lateral concave, facing inward, all extending 

 from shield to caudal margin ; laterals join cervical grooves of shield. 

 Ventral surface (!', A) same colour as dorsal, and hairs same; 

 stigmatic plates large, almost circular, and whitish in colour. 

 Rostruin light yellowish, base wider than long, pointed sharply at 

 lateral edges so as to appear broadly triangular ; palpi elongate ; 

 article II more than twice as long as article III ; mandibles like those 

 of the female; hypostome spatulate, two rows of teeth on each half, 

 teeth large, strong and sharp. Legs stout, pale, yellowish in colour, 

 with numerous long whitish hairs; coxae rectangular; coxae, each 

 bearing two blunt teeth on their posterior margin, those on coxae I 

 sharp. 



(Engorged) (/alour from light yellowish to dark l)luish, paler 

 about shield and on margins. Body elliptical, sides parallel, length 

 4.5 to 6 mm., width 8 to 4 mm. Shield becomes a uniform chestnut 

 brown. Integument of dorsal and ventral surfaces, with numerous 

 irregular-shaped papillae, larger near the posterior end where they 

 are often conHuent. Coxal grooves begin opposite coxae II, approach 

 each other anterior of anus, and then sharply diverge. Ano-marginal 

 groove present. On dorsal surface two anterior diverging grooves, 

 three posterior grooves, median longest, laterals concave near caudal 

 end. 



Jjarva (unengorged). — Body elongate, oval, widely rounded 

 behind; length .75 mm., width .5 mm.; colour light yellowish, with 

 internal organs showing through, giving it sometimes a greyish 

 appearance. SJiield covers anterior half of body; light reddish brown 

 in colour, wider than long, broadly rounded at angles; cervical 

 emargination shallow; cervical grooves well marked, extending to near 

 posterior margin ; eyes large, hemispherical, light coloured, shining 

 in orbits at lateral angles, surrounded by a spot of very dark colour ; 

 fine punctures evenly distributed over the surface ; a large spine at 

 each angle of cervical emargination. Dorsal surface (V, g) with five 

 shallow grooves, one median; nine caudal festoons, well nuarlved. 

 Rostrum light coloured, base sharply pointed on lateral edges, 

 triangular in outline on dorsal surface ; palpi elongate, article II 

 twice as long as article III ; hypostome spatulate, two rows of eleven 

 or twelve stout pointed teeth on each half ; mandibles like those of the 

 female. YentraJ surface (V, //) like dorsal; a jiair of long spines in 

 median area, opposite coxae I, another opposite second inter-coxal 

 space, and a third opposite coxae III ; four pairs of stigmatic 

 openings, between coxae I and II, II and III, l)eliind coxae III, and 

 one pair near caudal margin. Legs slender, tarsi swollen, but 

 tapering rapidly to a point ; coxae large ; sharp spine on posterior 



