( 31 ) 



district and month (possibly on the same day). It should be 

 noted that all the Sarawak Museum examples of this species 

 of Dactylispa come from the region watered by the Limbang, 

 Trusan and Lawas Rivers, all of which are adjacent and 

 debouch into Brunei Bay. 



" The little tufts of hair on the elytra of the Longicorn, so 

 formed as to resemble the spines on the Hispid, recall the 

 instance of another Longicorn (Zelota spathomelina, Gahan), 

 exhibiting a somewhat similar development (but bearing of 

 course an entirely different pattern from that of the Hispid-like 

 Longicorn), on this occasion in mimicry of the spined Endo- 

 mychid, Spathomehs turritus, Gerst. Mr. Shelford figm-es and 

 records this latter instance (I. c, p. 247, pi. xxiii, f. 56, 57). 

 He also mentions the presence of the larger red and black 

 Hispidae with mimetic Longicorns in his great Lycoid dis- 

 tasteful association, but I believe that this is the first instance 

 lxxviii] 



known of a Longicorn going to the length of pseudo-spine- 

 development on the elytra in mimicry of a Hispid. 



Explanation of Exh ib it ion. 

 I. Mimetic Lepidoptera. 



1. The Butterfly (Fam. I/esperidae), Koruthaiolos xanites, 



Butler, mimicked by 



2. The Moth (Fam. Callidulidae), Callidula abisara, Moore. 

 Locality: near Kuching, Sarawak, April 1909. Both at 



the 4th mile, ' Rock Road,' the Hesperid on 

 the 10th, the moth on the 24th. 



3. The Butterfly (Fam. Pieridae), Terias hecabe, L., mimicked 



by 



4. The $ of the Moth (Sub-fain. Chalcosiinae), Mimeuploea 



(Pidorus) inclustis, Walk. 



5. The $ of the Moth (Sub-fam. Chalcosiinae), Chalcosia 



(Cyclosia) hecabe, Jord. 

 Localities: Kuching, Sarawak, July 27, 1896 (No. 3), and 

 Madihit, Limbang R, Sarawak, 1911, No. 4 

 on May 21, No. 5 on May 26. 



