RHYNCHOTA PALAWANICA, PART 1: HETEROPTERA. 



By Charles S. Banks. 



[From Ihr Entomological Section, Biological Ldhorolorg, Bureau of Science, 



Manila, ]'. I.) 



"J'lie geograiahical position of the Island of Palawan (Lat. '8° 25' to 

 11° 30' :N"., Long. 117° to 119° 45' E.) is such that it forms a natural 

 link between the southwestern part of Luzon and the northern extremity 

 of west Borneo. At no place is_ there a stretch of water between these 

 two islands or their outlaying islands of more than 75 kilometers. How- 

 ever, the fauna of Palawan has been considered in the past to be much 

 more isolated from tliat of the remainder of the Philippines than from 

 that of Borneo; at the same time it has certain elements peculiar to 

 itself. The same feature has been found to a limited extent, as far as 

 collecting has been done, botanically. 



Semper, in his '"'Schmetterlinge der Philippinen'V ^i^^ Staiidinger, in 

 ''Lepidoptera von Palawan," describe many species as occurring only in 

 Palawan, which have since been found in other parts of the Philippines. 

 There ai'e likewise many species which have been recorded from Palawan, 

 the remainder of the Philippines and Borneo. 



On the 10 April 1909, Mr. W. Schultze of this laboratory collected 

 on the Island of Cuyo a single specimen of Euchromia horsfieldi Moore ^ 

 (Lepidoptera). originally from Java and further reported from Bali, 

 Sunibawa and Borneo. As the Island of Cuyo lies 150 kilometers east 

 of Palawan, it is probal)le that this species reached Cuyo by way of 

 Palawan. 



In examining two collections of Ehynehota from this island, made by 

 C. M. AVeber during the period from January 1908, to April 1909, and 

 by ^Y. Schultze during the period from 27 February to 8 April 1909, 

 so many forms were found which had been collected previously in other 

 parts of the Philippines that a complete list of the determined species 

 may be of value. 



There are 85 species recorded in the iirst part of tliis article, including 



^Eeisen auf den Philippinen (18S6-1902), II, 5 and 6. 

 -Proc. Zool. Soc. London (1859), 27, 200, PI. ].X, fig-. 13. 



553 



