Sexual Dimorphism in the Rutelid gemcs Parastasia. 488 



P. hascdis, but is smaller, with the elytral band in both sexes 

 narrower and the prothorax a bright coral red. 



Farastasia timoriensis, sp. n. (Plate XVII, figs. 7 and 8.) 

 Cylindiica, Itevis, nitida {^ rufo-brimnea, $ nigra), macula circum- 

 scutellari flava ; capite rugosoj prothorace sat grosse punctate, postice 

 dilatato (^ prajcipue), scutello subtiliter, elytris haud, punctatis, 

 pygidio subtilissime striolato. Long. 18 m.m. 



Hah. Timor {Doherty, Wallace {Hope 3fuse%con), etc.). 



The sexes in this species are closely alike except in 

 colour. The yellow elytral mark shows no variation in the 

 specimens which I have examined. It reaches the anterior, 

 scutellar and sutural margins but not the lateral border 

 and has a right-angled notch on each elytron. It is 

 relieved in the male by a black posterior edge whicli 

 merges into the reddish-brown ground colour. AH the 

 specimens I have examined are from Timor with the 

 exception of one in the Oberthlir collection from the small 

 neighbouring island of Lomblem. 



In this section should also be placed P. andavianica of 

 Dr. Ohaus, who, knowing only the male, placed it in his 

 "confluens group." Misled by this I at first regarded the 

 insect, of which the female differs entirely in appearance 

 from the form described by Dr. Ohaus, as a new species, 

 but a subsequent perusal of the description led me to 

 suspect the truth, and I have since been enabled to see 

 the type. I shall allow my description to stand however, 

 as the species is as yet quite inadequately described. 



Farastasia andamanica, Ohaus, Stett. Eut. Zeit., 1898, 

 p. 13. (Plate XVII, figs. 5 and 6.) 

 Cylindrica, parum nitida ( ^J rufo-brunnea, 9 nigra), macula hume- 

 rali fulvo-rufa maUeiformi ; capite fortiter rugoso, acute quadriden- 

 tato ; protliorace ubique fortiter punctato, utrinque foveolato ; scutello 

 subtiliter punctato ; elytris regulariter ac fortiter punctato-striatis 

 interstitiis subtilissime (2' grosse) irregulariter punctatis, singulo 

 elytro macula obliqua ad scutelluni transverse expansa ; pygidio 

 subtiliter transverse rugoso-striolato ; ^ capite fusco, dentibus supe- 

 rioribus minus acutis ; protborace minus gibbo, Isete rnfo-brunneo, 

 linea media subelevata ; scutello, elytris corporeque subtus paulo 

 obscurioribus, macula indistincta. Long. 12 — 17 m.m. 



Hah. Andaman Is. 



