ON A SPECIES OF STENOLOPHOS 25 



yellow ; but also by the rather longer, more parallel form, 

 and by having the thorax longer, and narrowed towards the 

 base, whereas in S. discopliorus it is nearly quadrate (although 

 rounded on the sides) that is to say, the width at the 

 anterior and posterior angles is about equal, and about equal 

 to the length. 



If (as it appears must be the case) this species is un- 

 described, I would propose for it the name Stenolophus 

 plagiatus, which will apply to the French insect in the British 

 Museum as well as to the Clyde insect, from which I take 

 the description. 



StenolopJius plagiatits, n. sp. 



Oblongus, sub-parallelus, niger prothorace rufo postice 

 subangustato, angulis posticis obtusis, basi utrinque late 

 foveolato et disperse punctato ; elytris flavis, singulis plagia 

 juxta suturam, nee basin nee apicem attingente nigricante ; 

 profunde striatis, striola scutellari longa. Long. 7 millim. 

 Hab. Gourock, ad flumen Clyde, Caledonian. 



Against the probability that this insect has been recently 

 introduced, it may be remarked that in the collection were 

 no other unusual or doubtful species ; the inherent im- 

 probability of a species of stenolopJins, that is confessedly 

 rare in Europe, having been introduced ; that it was found 

 under stones above high-water mark, behind an enclosure on 

 the beach or shore fenced in for timber to season in the 

 water a natural habitat for the insect ; and that two 

 examples were obtained together. 



vS. discophorus is recorded by Heer, as from Bern, Thun, 

 " rarissime " ; by Fairmaire from S. France, " Agen, Alpes, 

 Pyr. or., St. Severin (Dufour), Lyon, Saumur, Chinon " ; but, 

 as I have remarked, the supposed exponent in the British 

 Museum does not pertain to Fischer's species. All the 

 authors agree in describing 6*. discophorus as having a common 

 blue-black patch (possibly, however, in this only following 

 Fischer). 



