C^i Mr. G. J. Arrow on 



Fig. 4. Limnaa miceyana, sp. n. 

 Fiff. 6. Unio angoniensis, sp. n. 



Fig. 6. charon, ep. n. 



JP/]y. 7. vicinus, sp. n. 



J^/<7. 8. cJwziensis, sp. n. 



J'fV/- 9- gereti, sp. n. 



i*!//. 10. mafhonce, sp. n. 



/■'j/^. 11. shireensis, sp. n. 



i^jV/. 12. Mtitela opalescens, sp. n. 



Plate V. 



Pj^. 13. MiUela cuneata, sp. n. 

 i-^. 14. Spatha approximans, sp. n. 

 i-Yy. 15. bertilloniana, sp. n. 



VIII. — On a few neio Bornean Beetles of the Rutelid Genera 

 Mimela and Atiomala. By Gilbert J. Arrow. 



(Published by permission of the Trustees of the British Museum.) 



The Britisli Museum collection contains a very considerable 

 number ot species of the great genus Anomcda from Borneo, 

 few of wliich have at present been described. Some of the 

 more interesting forms are here characterized and two species 

 of tlie closely related genus Mimela are added. The group of 

 species at tiie end of this paper form a new section of 

 Anomala, distinguished by a sexual difference in the pygidium, 

 of a kind hitherto unknown. 



Mimela pallidicauda, sp. n. 



Laete flava, Isevissime aeneo-micans, fronte, pronoto (lateribus ex- 

 ceptis), elytris, dorsoque, pygidii apice exeepto, saturate viridibus, 

 partibus illis flavo-viridibus, tarsis posticis viridi-seneis ; ovata, 

 sat convexa, modice nitida ; clypeo lato, crebre punctate, fronte 

 irregulariter punctata ; pronoto fortiter, lateribus minus crebre, 

 puuctato, marginibus lateralibus po-st medium fere angulatis, 

 angulis posticis rotundatis ; scutello distincte punctato ; elytris 

 fortiter seriato-punctatis, interstitio secundo lato, irregulariter 

 punctato ; pygidio nude, fortiter sat crebre punctato ; mesosterno 

 baud producto, metasterni lateribus dense punctatis, griseo- 

 pubescentibus, medio laevi ; abdomine subtus punctate ; tibiis 

 anticis fortiter bidentatis. 



Long. 15 mm. ; lat. max. 9 mm. 



Hab. Labuan. Sumatra. 



I have seen only two female specimens^ the type in the 



