EXPLANATION OF PLATE L 



Fig. L Ventral view of a feigning Belostoma flumineum with the legs folded 

 against the ventral surface of the body. 



Fig. 2. Side view of a feigning Belostoma with the legs held in the usual charac- 

 teristic death-feigning attitude. 



Fig. 3. Dorsal view of a Belostoma, feigning with the legs folded against the ven- 

 tral surface of the body; in this view but little more than the femero-tibial 

 joints are visible. 



Figs. 4 and 5. Ventral views of Belostomas that have died a natural death, show- 

 ing that no definite nor constant positions of the legs are assumed. 



Fig. 6. A dying Belostoma showing the drooping of the abdomen, s, strap-Uke 

 appendages which are retractile and usually withdrawn from sight in the 

 living specimen. 



Fig. 7. General features of the nervous system of Belostoma. in, infraoesophageal 

 and first thoracic ganglia fused. 



