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fense, aggression, and titillation on the part of the male prepara- 

 tory to copulation. One S. American species {Sphingolabis 

 linearis) is stated to cause much annoyance and painful wounds 

 with its forceps, "leaving double puncture marks on the skin." 



But few parasites have been observed or recorded ; Lucas ob- 

 tained a yellow parasitic worm, which he suggests is a Nemathel- 

 n}inthid {Merniis sp.), from a specimen of Forficula auricularia, the 

 abdomen of which was much swollen. Two Tachinids are re- 

 corded ; Rodzianko stating that Rocsclia aiitiqiia was bred from 

 an East European species, Forftcida tomis, and Fischer records 

 another fly, Tachina sctipcniiis from Forficitia sp. 



Of the eight species known to be established on these islands, 

 the live following have been observed in the cane fields : 



1. Aiiisolabis aiuinlipcs, Eucas. Common generally. 



2. Labia pygidiata, Dube. Common locally. 



3. Labia sp. Not common. 



4. Labidiira sp. Not common. 



5. Chclisochcs iiiorio, Fab. Common in the wet districts. 



Of these ChclisocJtcs iitorio and Aiiisolabis anmiUpcs are of con- 

 siderable economic inportance and have therefore been parti- 

 cularly studied. 



CHELISOCHES MORIO. 



(i) General Remarks. 



Of the species in these islands, this fine Forficulid is certainly 

 the most important economically. It has a wide distribtition 

 in the islands of the Pacific Ocean, and is recorded from Tahiti, 

 Fiji, Hawaii, New Guinea, Java, Sumatra, Celebes, Philippines, 

 I'atchian, India and Ceylon. 



It is an extremely active species, especially during the larval 

 period, and appears to be diurnal, running over the leaves in 

 search of insect food during the hottest part of the day. The 

 adults will 'readily take to flight, the unfolding of the wings be- 

 ing a very rapid process and quite independent of the forceps, J 

 the writer never having seen them used either to assist in the " 

 folding or unfolding process. Wet localities seem to suit it best, 

 since it abounds in the moist mountain ridges and vallevs, and 



