224 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. I4I 



Scolopendra subspinipes Leach 



Natural prey. — Cockroaches, Hawaii (Williams et al., 1931) : This 

 is a common species with a body length of 6 or more inches. It is re- 

 ported to be a great enemy of cockroaches. 



Scolopendra sp. 



Natural prey. — Eciobius panzeri, England (Lucas, 191 1, 1920) : 

 When captured, the centipede was holding a live cockroach which it 

 had apparently just caught. The insect was held beneath its captor's 

 body, ventral surface upward, by several of the anterior legs while the 

 centipede fed. 



Class INSECTA 



We have found representatives of only 10 orders that have preyed 

 on or parasitized cockroaches : Beetles, flies, bugs, ants, wasps, 

 stylops, and cockroaches occurred in nature ; the others resulted from 

 feeding cockroaches to captive insects or were laboratory observations. 



Order ODONATA 



Family AESHNIDAE 



Anax strenuus Hagen 



Common name. — Giant Hawaiian dragonfly. 



Experimental prey. — Cockroaches, Hawaii (Williams, 1936) : The 

 dragonfly nymph was fed with medium large cockroaches and other 

 insects. 



Order BLATTARIA 



In this chapter the relations of other arthropods to cockroaches are 

 either as parasites or as predators. Certain cockroaches have turned 

 the tables on their adversaries and become predators themselves. This 

 aspect of cockroach behavior is discussed in chapter XVI. Other 

 associations of cockroaches, as commensals with other insects and as 

 associates of other cockroaches, are discussed in chapters XV and 

 XVII. 



Order ORTHOPTERA 



Family MANTIDAE 



Hierodula tenuidentata (Saussure) (?) (Serville) 



(PI. 32) 



Experimental prey. — Blatta orientalis, Diploptera punctata, Eury- 

 cotis floridana, Leucophaea maderae, Nauphoeta cinerea, Neostylo- 



