570 IVAR TRÀGARDH 



cal and perpendicular teeth, setclosely together. Pilus denta- 

 rius not placed ventrally (at the lower edge), as is usually 

 the case (1), but on the external, latéral side ;itis also of an 

 exceptional shape, being stout and conical, and pointing 

 straight forward. 



The lower jaw is flattened laterally to a thin, ensiform 

 appendage which is of even width throughout until the distal 

 third, where it tapers gradually towards the rounded top ; 

 on its interior (médian) side we notice a shallow furrow, of even 

 width, as long as the jaw, and half as wide; calcarmandibiili 

 is narrow, 2/3 as long as the jaw, and tapering gradually 

 throughout towards the top ; as far as I hâve been able to dis- 

 cern, it is fused with the cal car only with its distal third. 



Palpi (fig. 78). First joint as wide at its base as it is long, 

 with the ventral edge projecting at an obtuse angle in front 

 of the middle ; two hairs ventrally, posterior one small, slen- 

 der and straight, pointing perpendicularly downwards ; ante- 

 rior one ipserted at the top of the projection. S-shaped, flexi- 

 ble, two and a half times as la^rge as the other, and pointing 

 obliquely forward. The second joint is slightly club-shaped, 

 and eut ofï obliquely at the top, so that the dorsal side is 

 twice as long as the ventral one ; it bears 3 small, but rather 

 stout, hairs, two dorsally, the other internaly in the middle 

 and on a level with the posterior one. The third joint is as narrow 

 as the base of the second, cyhndrical, and nearly twice as long 

 as it is wide ; ventrally, in the middle provided with one straight 

 bristle of uniform width thrcughout, and blunt at the top 

 (for arrangement of other hairs see fig. 78). The fourth joint 

 is slightly shorter than the third one, shghtly widening distally 

 with 5 to 6 hairs dorsally, and one ventrally and distally. Fifth 

 (terminal) joint half as long and scarcely more than half as 

 wide as the fourth, obtuse at the top, with long, bifurcated 



(1) Exceptions from this rulo are Cyrtolaelapa s. str., iu wliicli it is reduced to a rouud pore, 

 placed laterally near the top of tlic jaw (Tkagardh 1910, p. 418-419, lig. 81), the parasitic Lae- 

 laptinae (ibid. p. 438) and probably most of the Uropodinae, in which it is greatly reduced 

 or entirely missing. 



