82 



backward, whilst four smaller ones of uearly equal size form a 

 third transversal row. Behind the sucker plate the projectiou of 

 the abdomen bears two hairs. 



Legs. Legs 1 — 3 bear robust claws, leg 4 is clawless. Tarsi 1 

 and 2 are ornated by two lanceolate hairs, one on each side. 

 The outer lanceolate hair is larger than the inner, and shows a 

 nerve. Tarsus 1 has a tactile hair extending beyond the claw; 

 and tibia 2 one projecting even beyond the top of the largest 

 lanceolate hair. Tarsus 3 has only one lanceolate hair, one common 

 hair and one tactile hair as long as the leg 3. Leg 4 ends in a 

 single long hair, 320 — 380 p. It is true, that at the proximal end 

 of this hair two minute hairs of about 3 p. length are observable; 

 most propably, however, they have no specific value. 



Habitat: In the acarid-chamber of the first abdominal ring of 

 Xylocopa (Koptorthosoma) tenuiscapa Westw. 



Patria: India, Java. 



33. Key to the species of Trichotarsus Caii. 



Hypopi. 



Two dorsal shields; tarsi 1 — 4 with 

 minute claws; circumference of body 



suboval ; dorsum almost hairless . 2. 



Tarsus 4 without claw 5. 



(Tarsi 1—3 without leaf-like hairs .3. 



f Tarsi 1 — 3 with 4 leaf-like hairs .4. 



i Sucker-plate with 6 suckers . . . Tr. manicati Giard. 



' Sucker-plate with 8 suckers . . . Tr. trijilis Canestr. 



4 Only one species Tr. ornatus Oudms. 



(Two dorsal shields; the anterior triang. Tr. osmiae (Duf.). 



I One dorsal shield, posteriorly, . . 6, 



(Tarsi 1 — 3 with 2 claws . . . . Tr. alfkeni Oudms. 



(Tarsi 1 — 3 with 1 claw .... 7. 



(Tarsus 4 with 1 hair 8. 



7 ] 

 ( Tarsus 4 with 2 hairs 9. 



