85 



shows au indication of a demarcation between two shields. It is 

 a pity that the raaterial sent to me by Mr. S. k. Poppe, did 

 not co ii tam larvae or protonymphae. Probably they have two 

 dorsal shields. The peritrema is partly visible on the dorsal side, 

 reaching the middle of the coxa 2. The shield raeasures 720, 

 the body 744 p. 



Fig. 21 (PI. VI) represents the dorsal side of a somewhat older 

 nympha, which bas got its final form, before it begins to suck 

 blood. The shield is 720, the body 776 pc. long. The peritremata 

 are not visible, they have taken a ventral situation. 



Fig. 22 shows us the ventral side of a nympha. The sternal 

 shield is distinct, with 5 pair of hairs. Just behind the shield 3 

 hairs. The whole venter is hairy. The anal shield is distinct, with 

 the usual three hairs. Behind the postanal hair the anal shield 

 has the usual cribrate portion. Behind the coxae 4 a little 

 inguinal shield is present. The coxae 1 have ventrally, distally and 

 inward a denticulated edge. The coxae 2 aud 3 bear anteriorly 

 a knob with a strong hair curved outward. The coxa 4 has the 

 same hair, but it is not planted on a knob. 



When the nympha is wholly swollen, it nieasures even 1080 p. 

 Of course its shield has ouly 720 (&. in length. 



The male measures 1080 yt.. Its dorsal shield has the same shape 

 as that of the nympha except that it is 1040 yc. long and has 

 no rudiment of a demarcation between two shields. The bare 

 spaces are present and similar to those of the nympha. The 4 

 vertical hairs are distinct. 



Fig. 23 represents the ventral side of a male. There is a sterni- 

 geniti-ventri-anal shield. The sterni-genital portion of it is hairy 

 though less than the ventral portion. This is very wide and 

 remembers us of the same portion in Hydrogamasus aud Neopara- 

 situs. Behind the postaual hair the anal shield shows its cribrate 

 portion. The peritrema is short, reaching only the middle of coxa 

 3. The deuticulated edge of the coxae 1 scarcely visible or absent. 

 The knobs on coxae 2 and 3 absent. 



The female measures 1120^.; its dorsal shield 1080^. This 



