82 
Psyche 
[March 
Figs. 11-20. Ischnothyreus browni sp. nov. Fig. 11. Eyes from in front. 
Fig. 12. Left palpal tibia and tarsus; nearly prolateral view. Figs. 13-20. 
Ischnothyreus indressus sp. nov. Fig. 13. Distal end of right maxilla. 
Figs. 14-15. Nearly retrolateral and prolateral views of left palpal tarsus, 
respectively. Fig. 16. Right palpal femur, patella and tibia; nearly pro- 
lateral view. Fig. 17. Genital aperture of male. Fig. 18. Abdomen of 
male; dorsal view. Fig. 19. Abdomen of female; dorsal view. Fig. 20. 
Ventral and epigastric scuta of female with epigynal area. 
IOO were taken in one day at Gatun, Canal Zone and all came from 
hay and weed debris. In the West Indies the species has been taken 
in Jamaica; Puerto Rico; all three U. S. Virgin Islands; Tortola, 
British Virgin Islands; St. Lucia; St. Vincent; Cuba; Haiti; Curacao 
and Trinidad. A male is in the collection of the Museum of Com- 
