On a few Melotonthine Coleoptera. 21 



the Bishop's own mind, for he continues (see above) : "This 

 opinion has some probability, and that strange effect is 

 really owing to this cause in some places." But, being 

 under the thrall of the Kraken, the gigantic cephalopod 

 which, like " Dead Water," abounded in the fiords of his 

 country, he finally concludes that it, under the name Kors- 

 Trold or Soe-Drawl, is the effecting agent in ship-detention. 



III. — Systematic Notes on a few Melolonthine Coleoptera. 

 By Gilbert J. Arrow. 



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



[Plate I.] 



The following descriptions and notes have been put together 

 in the course of working out the nomenclature of certain 

 species of Melolonthinse injurious to crops in different regions. 

 The types of the species described as new are in the British 

 Museum. 



In his l Report on Phy talus smitht, Arrow, and other 

 Beetles in jurious to Sugar-cane in Mauritius' Mr. d'Emmerez 

 de Charmoy refers to certain Lamellicorn beetles to which no 

 precise names could be given. These were subsequently 

 sent to me for identification, but, owing to uncertainty as to 

 whether they were imported or indigenous, I deferred their 

 determination at that time. Having failed to obtain sufficient 

 evidence of their occurrence elsewhere, I have now described 

 them, their economic importance rendering the absence of 

 recognized names highly inconvenient. 



In the Report above mentioned the name Gymnogaster 

 buplithalma, Bl., is applied to certain cane-feeding grubs. 

 The beetles sent to me as probably belonging to that species 

 are two different forms, both of them apparently unnamed 

 hitherto. G. buphthalmus is an inhabitant of the island of 

 Bourbon, and in all probability is not found elsewhere. 

 Although it has a close superficial resemblance to the insect 

 I here call Rhizotrogus paUens } theve are important anatomical 

 differences in the reduction ot the biting parts of the mouth 

 and the existence of five, instead of three, joints in the an- 

 tennal club. No other species of Gymnogaster is known. 



