16 ARKIV FÖR ZOOLOGI. BAND 3. NIO 28. 



The 7netapodial shields are very large, shaped as in Neo- 

 7negistus; they do not however extend further backwards than 

 to the middle of the ventri-anal shield; they are provided with 

 numer ous glandular fissures, shaped as in Neomegistus and bear 

 in the posterior part one pair of spines of the same shape as 

 those of the ventri-anal shield. , 



The peritrematic shields are narrow, only discernible on 

 the interiör side of the peritremata, which extend forwards to 

 the level of the anterior edge of coxse II. 



The pseudocapihdum is ventral, covered by the anterior 

 edge of the dorsal shield. 



The episto7na is triangulär, with short mucro and slightly 

 wavy edges, reticulated as in Neomegistus. 



The mandihles. (Fig. 4, Pl. I.) 



The upper jaw of the chela is only half as long as the lower 

 one, straight and slender, without teeth, in the top ventrally 

 provided with a handie-like, rounded tuber cle. It is provided 

 on the inner side near the basis with a lanoeolate membra- 

 naceous, longitudinally striated slip, with finely serrated, edge, 

 which is nearly ^/2 longer than the jaw. 



The loiver jaw is straight, pointed; the dorsal edge ante- 

 riorly provided with 6 small sharp teeth. 



It is provided with two appendages. 1. on the external 

 side, ventrally, near the condylus the so-called lacinia which 

 is only slightly longer than the jaw, longitudinally striated 

 and ventrally deeply fringed. 2. one thin hyalin plate, atta- 

 ched along the proximal half of its own length to the dorsal 

 edge of the jaw and provided with extremely small teeth. 



The 7naxiUce. (Fig. 14, Pl. I.) 



The cox8e are fused together to constitute the under side 

 of the rostrum; they bear the usual four pairs of hairs, of which 

 three pairs, the posterior one, which is situated far backwards, 

 and the two median pairs are small and of the usual shape, 

 whereas the anterior pair (fig. 14. Pl. I), situated far for- 

 ward, near the top of the maxillary plates, is modified into 

 two large strong, pointed and slightly outwardly curved pin- 

 shaped bristles. 



The inaxillary lohes (ml. fig. 14) are large, but not so 

 enormously developed as in Neomegistus, inserted on the 

 inner side of the edge of the coxse; the two proximal thirds 



