TRÄGÅRDH, TWO MYRIOPODOPHILOUS ATENNOPHORIN.^. 19 



The sternal shield (Fig. 21, Pl. I) is very small, according 

 to the great development of the metasternal shields, which 

 nearly divide it in two parts; it is very finely punctured with 

 the lateral edges thickened and extending backwards to the 

 middle of coxse III; there are three pairs of very minute 

 hyalin hairs, one near the anterior lateral angle, two close to 

 the median margin; two pairs of fissures. 



The metasternal shield is double, large, sqiiare rhombic; 

 both shields finely punctured and separated in the middle by 

 a space of thin cuticle; posterior edges thickened and conver- 

 ging in a short central projection; no hairs, only one pair of 

 pores, situated near the lateral angle. 



Between the posterior edge of the metasternal shields and 

 the anterior edge of the epigynial and paragynial shields is the 

 genital aperture a large transverse split, situated on a level w^ith 

 the posterior edges of coxse III. 



The e/pigynium is distinctly separated from the ventri-anal 

 shield, small, triangulär, like the paragynial shields finely punc- 

 tured, anteriorly rounded with a small median incision. 



The paragynial shields are larger, distinctly separated from 

 the ventri-anal as well as from the metapodial shields; anterior 

 edge thickened slightly concave, lateral and posterior margin 

 well rounded: The shields are provided with two pairs of ex- 

 tremely small hyalin hairs and near the lateral margin with one 

 straight sharply-pointed spine; there are two pores besides. 



The ventri-anal shield is shaped like that of the male and 

 provided with about 20 pairs of sharp spines (Fig. 21, Pl. I) 

 and on both sides of the anus with two hairs. 



The anus is situated close to the posterior margin of the 

 ventri-anal shield. 



The soft marginal band outside the ventri-anal shield bears 

 a roAv of six pairs of spines shaped as those of the ventri-anal 

 shield. 



The metapodial and peritrematic shields are shaped exactly 

 like those of the male. 



The mouth parts show the foUowing differences from those 

 of the male. 



Mandihles (Fig. 6, Pl. I). The upper jaw is pointed, ^vith 

 thin hyalin, finely serrated ventral edge, distally provided 

 with 6 — 7 extremely small teeth. No membranaceous slip, on 

 the dorsal side; opposite condylus one hair. 



