THE MARINE INSECTA, ARACHNIDA, AND MYRIOPODA 181 



under stones that are partly bedded in gritty ooze are 

 several species of Coleoptera. 



The best known of these is Mpus marinus. This pretty 

 little beetle is rather over an eighth of an inch in length, 

 and is of a pale bronze colour. 



Another is Mpus Robinii. It is somewhat larger, nearly 

 a quarter of an inch in length, and of a metallic, bottle- 

 green colour. It is considered rather rare, but on this 

 coast, at least, it is as frequent as the former. 



There are several other species of marine beetles, but I 

 have not seen these. The Rev. Canon Fowler records 

 one (Micraymma brevipenne) taken far below high- tide 

 level, at Ventnor, Isle of Wight ; also Diglossa mcrsa, 

 under shingle, local and rare, but found at Southend. 

 Sheppey, Weymouth, Tenby, etc. ; and Phytosus spinifer, 

 under weeds, etc., below high- tide level. 



Perhaps the most interesting of the marine insects is one 

 belonging to the Hemiptera, and which is named Mpophilus 

 Bonnairii. 



For some years a specimen of this was in the British 

 Museum, with no data beyond the name of the discoverer, 

 and the locality Cornwall. 



Then I believe I was the next to come upon this species. 

 From time to time, while collecting sponges, etc., I had 

 found this, to me incomprehensible, insect, and had sent 

 many specimens to entomological friends without being 

 able to obtain information. 



Then one day, while among the rocks with Dr Rene 

 Koehler, of the Academy of Science of Nancy, I called 

 his attention to some specimens. He at once recognised 

 it, collected a good many, and published an illustrated 

 paper on it in the Proceedings of the Academy of Science 

 of Paris. 



It is about a quarter of an inch in length, and in form 

 and colour closelv resembles a much too familiar Hemi- 



