62 



of the pan is roughly imdulate, and a hole, the stigma itself 

 is large and distinctly visible. I think we must consider this 

 pan as a rudiment of a peritrema. I have not yet* had an 

 opportunity to examine Iphiopsis mirabilis , but I think its 

 siugular » stigma", drawn by Berlese will prove to be of the 

 same kind. 



The legs (Fig. 30) are short, having nearly the breadth of the 

 mite in length, and strong. The spines are short and strong; in the 

 distal joints of the fore-legs they have a tendency to stand perpendi- 

 cular ou the axe of the limb, nay are sometimes directed backward. 

 On the dorsal side of the proximal end of the genu 1, and on the 

 ventral side of the tarsus 1 and 2 there are two short chitinous bars 

 or thorns. On the ventral side of the coxae 1, 2 and 3 (Fig. 31) there 

 are two short, more or less spool-shaped spines, on coxa 4 only one. 



Habitat: the acarid-chamber in the first abdomiual riug of Xy- 

 locopa (Koptorthosoma) tenuiscapa Westw. 



P atria : Java, India. 



14. Key to the genera of Laelaptinae. 



Peritrema a pan 2. 



Peritrema tubular 3. 



Legs 1 with ambulacrum Greenia Oudms. 



Legs 1 without ambulacrum .... Iphiopsis Berl. 



( Legs 1 with ambulacrum 4. 



( Legs 1 without ambulacrum .... 10. 



!9 femur 4 without spur 5. 

 9 femur 4 with spur 9. 



!Mandibles chelate in both sexes ... 6. 

 Mandibles of 9 chelate, of cT uot . .8. 



cf with sterni-geniti-ventri-anal shield. Laelaps C. L. Koch. 

 6 



cT with anal shield separate .... 7. 

 f Body not shouldered; epistoma with 

 7 | long feathered mucro , Emeus Mégn. 



I Body shouldered; epistoma scarcely pointed Seiulus Berlese. 



