1912.] 



285 



List by Messrs. Joy and Tomlin [Ent. Mo. Mag., XLIV. p. 104] on 

 specimens taken by Dr. Wallace of Great Grrimsby, by sweeping on the 

 coast near that town. 



The insect dealt with in our note [Ent. Mo. Mag., XLVII, p. 248], 

 which was in type previous to Dr. Sharp's discovery, was the latter. 

 These two Longitarsi are not, however, of the same species, and although 

 the original description of Grylleuhal might be held as applicable to 

 either, the insect taken by Dr. Sharp is undoubtedly that known to 

 Weise and other continental authorities as L. nicjerriwMs, GTyll. 



The species, although thus erroneously introduced, will still retain 

 its place in our lists, and the differences between the two are not so 

 great as to necessitate a change from the position assigned, or an 

 alteration in the characters given in our table. 



For our detailed description should, however, be substituted the 

 following : — 



Ovate, convex, entirely black except anterior and intermediate femora and 

 tarsi which are somewhat fuscous. Antennae : moderate in length. Thorax : 

 transverse, very finely bordered, very distinctly akitaceous with weak scattered 

 piinctuation. Elytra : hardly alutaceous with pvmctuation strong, close, and 

 confused, apical angles well defined. Spurs of posterior tibiae long. Length 2 mm. 



The true L. nigerrimus thus differs from the Lincolnshire insect 

 in being smaller, in having the anterior and intermediate femora 

 fuscous instead of cjuite black, and, what is much more important as a 

 specific differentiation, in having the posterior tibial spurs very 

 conspicuously longer. There is, however, another and a physiological 

 difference which sunders ihe two, the habitat of L. nigerrimus being 

 very wet sphagnum, while the other species was swept from some plant 

 on the dry sandhills of the coast. 



The question thus arises, to what is this coast insect, which is not 

 L. nigerrimus, referable ? At present we can only say that we are 

 inclined to believe it may prove identical with a Longitarsus recently 

 described by Mr. H. C. Dollman under the name of L. plantagomariti- 

 mus [Ent. Record, 1912, p. 187]. Mr. Dollman took his specimens 

 from Plantago maritima near Grravesend, and although we have no 

 evidence as to the exact plant on which Dr. Wallace took his, we know 

 that the locality was littoral. Morphologically such specimens as we 

 have seen of either have much in common. 



We feel, however, that more specimens of, at any rate, the 

 Lincolnshire insect should be available before we can express any con- 



