NEW BRITISH SPECIES NOTICED IN 1858. 139 



86. Megarthrus sinuatocollis, Lacord., Eric. ; Hardy, 



in Murray's Cat. Scot. Col. 134 (1853) ; Waterhouse, 



Cat. Brit. Col. 32 (1858). 

 Mr. Hardy considered that this insect was probably iden- 

 tical with 31. depressus, Steph., but as it proves not to be so, 

 according to Mr. Waterhouse, and to be totally unrepresented 

 in his cabinet, the merit of first identifying it as an inhabitant 

 of Britain is due to Mr. Hardy. 



" Berwickshire, Dalmeny, Aberdeenshire ;" common in 

 garden rubbish at Finchley and Highgate, and occasionally 

 in putrid fungi at Hampstead. 



87. Megarthrus hemipterus, IHig. ; Hardy in Murray's 



Cat. Scot. Col. 134 (1853) ; Waterhouse, Cat. Brit. 



Col. 32 (1858). 

 M. rufescens, Steph., turns out to be a pale variety of 

 31. denticollis, Beck, and not, as Mr. Hardy conjectured, 

 synonymous with the present species. Appears to be of very 

 rare occurrence in Britain ; it is found in putrid fungi, and 

 has been taken by Mr. Wollaston at Scawby, Lincolnshire, 

 by Mr. T. P. Dossetor and myself at Mereworth, Kent, 

 and I have met with single examples near Highgate and 

 Mickleham. 



88. Hister marginatus, Eric. ; Waterhouse, Proc. Ent. 



Soc. 5 April, 1858, Zool. 6072 (1858). 

 Distinguished from H. ca?-bonarius, Ent. Hefte, with 

 which it is not improbably mixed up in many collections, by 

 its uniformly smaller size, sub-orbicular outline, and by the 

 anteriorly abbreviated second striae, which reach the middle 

 only of the elytra, while the first and third arc entire, or very 

 nearly so. 



89. Saprinus immundus, Gyll. ; Waterhouse, Proc. Ent. 



Soc. 5 April, 1858, Zool. 6072 (1858). 



