138 



Stridulation. 



This species produces a very noticeable striditlation, wlien- 

 ever disturbed. By holding the insect between the fingers, we 

 are able to observe that the sound is produced by rubbing the 

 caudal border of the pronotum over the mesonotuni. The strid- 

 ulation can be made l)y working these parts together with the 

 fingers. 



DiSAGKEEABLE OdOR. 



None of our roaches are more disagreeable to handle. While 

 most roaches emit a liquid fecal matter, when disturbed, I have 

 never found a species before that couipares witli this for the 

 unpleasant odor. 



Rhyparohia maderae feeds extensively upon insect remains. 

 This is especially true with the nymphs, which eat up their own 

 cast skins as fast as they shed them. I have not found them 

 eating each other, but they soon clean up the renuxins of any 

 soft-bodied insects that I i)lace in the jars ; a large dragon-fly 

 will be eaten over-night. 



The period of development of this species is evidently some- 

 what longer than that of L. surinamensis; nymphs at 4 months 

 are less than one-fourth the size of the adults. 



PJiyllodromia lio.'^pes Perk. 



HAB. Under stones, r\d)bisli, etc. ; out of doors, also in 

 houses. 



The females of this species are wingless. I found them in 

 great numbers on the Waialae beach, beyond Diamond Head, 

 among camp refuse. They were associated with NaupJioeta hi- 

 vitata, Phyllodromia hieroglyphica and Eleutheroda dytiscoides. 

 One specimen of Rhyparohia maderae nymph, was also found 

 in this place. Several of the females were found with the oothe- 

 cae still attached to them. On JMay 4th, 1914, one of these re- 

 producing females and a male were placed in a jar in the labora- 

 tory where observations were made on the reproductive habits 

 as indicated below: 



