TRÄGÅRDH, TWO MYRIOPODOPHILOUS ANTENNOPHOKIN.E. 5 



2 a second ditto, much sliorter and naked, attached behind 

 the second tooth. 



Between the base of the jaws is a small pyriform appen- 

 dage, which mos t probably is a sense-organ. 



The lower jaw is very strong, twice as high as the upper 

 one, towards the end flattened laterally and provided with 

 one large dorsal tooth and one still larger ventral one and thus 

 at the end becoming chiselshaped. The internal (dorsal) side 

 of the jaw is not provided with any teeth. The lower jaw is 

 provided with two appendages. 1. a lanceolate rounded trans- 

 parent membrane with smooth edges, attached to the interiör 

 proximal part of the jaw along its own half . 2, on the external 

 side attached near the condylus one long, narroAv transparent 

 slip (lacinia Berlese) which is nearly twice as long as the jaw 

 and on the ventral side of the distal half is provided with an 

 enormous fringe shaped like an heterocercous caudal fin. The 

 dorsal side of the »vertebra » of the fin is f inely serrated. 



Both the jaws, but not the appendages are subject to 

 a considerable variation with regard to the size and shape of 

 the teeth and the tubercles. 



The maxilloe (Figs. 10 and 11, Pl. I). 



The c 0X86 are fused together to constitute the under side 

 of the rostrum (Fig. 10); they bear the usual 4 pairs of hairs 

 of Avhich however only the posterior (a) very small one, and 

 the lateral median pair (b) are of the usual shape, the interiör 

 median pair (c) being transformed into large, flat, sharply 

 pointed slips, clothed with small triangulär scales; the anterior 

 pair is situated far forward on the maxillary plates and mo- 

 dified in two curved, transparent, naked horns, rather large at 

 their base and sharply pointed. 



The 7naxillary lobes (With.)^ [= lobi externi Winkler,^ 

 malse externi Oudemans.^ Dornfortsatz Börner]* (Fig. 11) 

 are enormously developed and very singularly shaped; they 

 extend forwards nearly as far as the outer lobes of the maxillary 

 plates, are broad, thin and transparent ; their distal third being 

 through a fine, oblique line distinctly demarcate from and 



^ The notostigmata. Vidensk. Medd. fra den naturhist. Foren. i Ko- 

 benhavn 1904. p. 147. 



2 Anatoniie d. Gamasiden. Arb. Zool. Institut. Wien. Torne VII 

 H. 3. p. 9. 



^ Nova Guinea. Resultats de Fexpedition Scientifique. Acari. 



^ Arachnologische Studien. IV. Zool. Anz. 1902. 



