300 



Kolenati). The skin in these pits is smooth, whilst it is provided 

 with numerous pores between the pits. The anterior dorsal shield 

 is provided too with the 5 pairs and the posterior one with the 

 2 pairs of sense-organs. The dorsum further shows exact the same 

 hairs as the embryo. The stigma is ventral; the peritrema for the 

 greater part dorsal. Remarkable are the two groups of pits in 

 the anterior portion of the shield, quite median, and the indistinct 

 4 longitudinals rows of other pits. 



Fig. 36 is the ventral side of the protonyrnpha. Remarkable 

 features are: the stigma, the end of the peritrema and the opening 

 of the excretory orgau. The sternal shield is subpyriform, with 

 a little top posteriorly, provided with 6 hairs. Between this shield 

 and the anal one 4 pairs of hairs. The anal shield is small. 



The legs. The dorsal rows of hairs of all the legs are charac- 

 terized as follows : the trochanter has no hairs or very small ones, 

 the fernur and genu the longest hairs. The lateral rows of all 

 the legs are robust, stiff, and curved generally somewhat backward 

 Of the ventral rows the outer rows show robust hairs on the 

 following joints, directed outward : 



leg. 1 : , trochanter, , genu, tibia, 



2 : coxa, trochanter, femur, genu, tibia, 

 3 : , trochanter, , genu, tibia, 



4: , trochanter, , , tibia. 



Deutonympha. — Length 1000 /*. Colour darker straw-coloured. 

 Fig. 37 represents the dorsal side of it. The principal differences 

 between this nympha and the protonyrnpha are especially the 

 following: 1. There is only one dorsal shield, which ows its origin 

 to the fusion of the two dorsal shields of the latter. 2. Instead 

 of one hair above the coxa 4 it is provided with about 16 pairs 

 of long hairs ! The stigma is more lateral than ventral. 



Fig. 38 shows us the ventral side of the deutonympha. It differs 

 froru the protonyrnpha by : 1. There is a small jugular shield; 

 2. The sternal shield is better chitinized, more shield-shaped than 

 pyriform, provided with 2 pairs of pores; 3. Between the sternal 

 and anal shields not 4 but about 16 pairs of hairs; 4. The 



