230 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. I4I 



Family DYTISCIDAE 



Rhantus pacificus Boisduval 



Experimental prey. — Cockroaches, disabled, Hawaii (Williams, 

 1936) : This beetle, which is common in mountain streams, located 

 wounded cockroaches in an aquarium by sense of smell or taste rather 

 than sight. 



Family LAMPYRIDAE 



Undetermined larva 



Experimental prey. — Parcoblatta virginica, adult female (pi. 33, 

 C), U.S.A. (Roth and Willis, unpublished data, 1953). 



Family RIPIPHORIDAE ^ 



Neonephrites partiniger Riek 



Natural host. — Cockroach (undescribed genus belonging to the 

 Pseudomopinae), Australia Capital Territory (Riek, 1955). 



Neorhipidius neoxenus Riek 



Natural host. — Robshelfordia longiuscitla or Roh shelf or dia circum- 

 ducta, Australia Capital Territory (Riek, 1955). 



Paranephrites xenus Riek 



Natural host. — Oniscosoma granicollis, Australia Capital Territory 

 (Riek, 1955). 



Rhipidioides ableptus Riek 



Natural host. — Balta patula, Australia, Victoria (Riek, 1955) : 

 Pupal stage lasted only 3 days. 



Rhipidioides adynatus Riek 



Natural host. — Escala sp. or an undescribed genus of Pseudo- 

 mopinae, Australia, Victoria (Riek, 1955). 



Rhipidioides fuscatus Riek 



Natural host. — Ellipsidion affine, Australia, New South Wales 

 (Riek, 1955). 



Rhipidioides helenae Riek 



Natural host. — Robshelfordia longiuscula or Robshelfordia circum- 

 ducta, Australia Capital Territory (Riek, 1955). 



s Barber (1939) has shown that the correct spelling of the name of the type 

 genus is Ripidius and not Rhipidius, as it is frequently written, and that, conse- 

 quently, the family should be Ripiphoridae and not Rhipiphoridae. 



