106 



a second species from Charles Turner, who took it in the New Forest. It differs from 

 our well-known H. impressus of Marsham in being a trifle smaller, in the general 

 colouring of the upper parts (instead of being of a brassy bronze hue being more 

 inclined to green, or, in parts to blue), and in the tibiae, tarsi and apex of the 

 femora being entirely of a palish testaceous colour. The three basal joints of the an- 

 tennae, moreover, are chiefly testaceous, the first and third joints being but slightly- 

 tinted with aeneous. The thorax is rather narrower and longer, more contracted in front, 

 and less thickly and, less strongly punctured; the reflected lateral margin is rather 

 broader, and is rufescent, as is likewise the lateral margin of the elytra on the under 

 sides, and these parts are less distinctly crenulate. Lastly, the ounctures of the elytra 

 are larger, less numerous and less clearly defined. Upon re-examining the descriptions 

 of Fabvicius, Gyllenhal, &c., I now believe that we must apply the name nigricornis to 

 this insect, and retain that of impressus for the Marshamian species, with the tibiae 

 more or less dusky. The species would then stand thus : — 



1. Haplocnemus nigricornis. 

 Aplocnemus impressus, var,, Steph. Illuslr. 



Dasytes nigricornis. Fab. Sijst. EL ii. 73, 10 ; Enl. Syst. i. 2, 81, 16. 



■ , Payk. Faun. Suec. ii. 158, 3. 



, Gyll. Ins. Suec. i. 327, 4. 



2. Haplocnemus impressus, Sieph. Illustr. iii. 316 (Aplocnemus, id.) and collection. 

 Crioceris impressus, Marsh. Ent. Brit. 226, 16. 



Haplocnemus nigricornis, Waterh. Catalogue. 



"Lathridius rugosus, Herhst, Coleopt. v. 6, 3, Tab. 44, fig. 3, c, C, (Latridius). 

 , Gyll. Ins. Suec. iv. 140, 20. 



, 3Iannerh. in Germar's Zeitsch. fur Entom. v. (1844), 90, sp. 28. 



' L. oblongus, niger, glaber, ore antennis pedibusque ferrugineis, thorace brevi, 

 lato, crebre punctato, lateribus dilatato-rotundatis, dorso convexo, medio obsolete 

 canaliculato, poslice transversim profunde impresso ; elytris obsolelius striato- 

 punctatis, interstitiis laevibus. Long. | — 1 lin. ; lat. f — i lin.' 



" The above description, from Mannerheira, agrees perfectly well with the insect now 

 exhibited, and which I long since separated in my English collection as a distinct 

 species, but was unable to name. Finding some German specimens like it in the 

 British Museum collection, and bearing the name ' rugosus,' I was led to examine 

 the descriptions of that species, which I must formerly have overlooked. I suspect 

 that the very inappropriate specific name applied to it was the cause of the oversight, 

 it being distinguished by the smoothness of its elytra. I have seen specimens of 

 this species in the Kev. A. Matthews' collection. It is usually smaller than 

 L. minutus and of a shorter form, and approaches more nearly to my L. testaceus, 

 but that insect is still shorter and broader, has the elytra more distinctly punctate- 

 striated, and its colour appears to be always testaceous, whereas L. rugosus is black." 



Mr. M'Lachlan exhibited a Dipterous parasite on the larva of a Trichopterous 

 insect. It had beeif bred by Mr. Parfitt, of Exeter, from a larva-case of Limnephilus 

 marmoiatus, and had emerged through the water, though the eggs had probably been 

 laid by the parent fly when the case was floating on the surface. The name of Hydro- 

 tachina Limnephili was proposed for this novelty. 



