Cbamberun. — New Spiders of the Family Aviculariidae. 



PLATE 4. 



Eurypelma regina Chamberlin. 

 Fig. 1. Right palpal organ, ectal view. 



Eurypelma aberrans Chamberlin. 

 Fig. 2. Eyes, dorsal view. 



Eurypelma aureoceps ChamberUn. 

 Fig. 3. Eyes, dorsal view. 



Lasiodora differens Chamberlin. 



Fig. 4. Stridula ting bristle from coxa I. (Female, type). 

 Fig. 5. Eyes, dorsal view. 



Lasiodora curtior ChamberUn. 



Fig. 6. Stridulating bristle from coxa I. (Female, type). 

 Fi^ 7. Same, smaller example. 



Phormictopus nesiotes Chamberlin. 



Fig. 8. Right palpal organ, ectal view. 



Fig. 9. Tibial spurs of left leg I of male, mesal view. 



Acanthoscurria cursor ChamberUn. 

 Fig. 10. Right palpal organ of male, ectal view. 



