238 
Psyche 
[September 
Figs. 166-172. B. parabolicus ( Atropos Group). L2d and prepuce. The 
two structures have been mounted separately in Figs. 168-172 (all to scale 
shown in Fig. 169). 166-167. (USNM), South America. 168-172. (N), 
Puraquequara, Rio Negro, Amazonas, Brazil. 
