A REVISION OF THE GENUS LEPTOTHORAX. 107 



Antenna' twelve-jointed. Scape shorter than the second joint of funiculus, 

 which is very long. The funiculus thickens slightly towards the end, but forms 

 no club. Mandibles short, narrow, blunt at end, without teeth. Wings clear, 

 radial cell open. 



Thorax coarsely rugose. Pedicel and gaster smooth and shining. Whole body 

 with long whitish hairs. 



Black; legs dark brown, joints and tarsi paler. 



L., 3-7mm.-4.5mm. . . . L. acervontm, (s.str.), Fabr. 



Antennae thirteen-jointed. Scape much longer than second joint of funiculus, 

 which is as short as the others following. The last four joints form a narrow club. 

 Mandibles broad at end, dentate. Antennas sparsely clothed with hairs, legs 

 almost without hairs. Wings clear, radial cell closed. 

 . . . L. tubermn, Fabr. 



■Joints 2-5 of funiculus about twice as long as broad. Head finely rugose ; 

 mesonotum smooth and shining. The petiole viewed in profile somewhat raised 

 in centre ; post-petiole about as high as long. Epinotum without tooth-like 

 tubercles. 



Brown-black ; mandibles, antennje, legs, and extremity of gaster, yellow, more 

 or less clear. 



L. 2-5mm.-3-2mm Sub.-sp. nijlanderi, Foerst. 



I have not been able to see a British S of ni/laiuleri, and so far as 

 I know, one has never been tal\en in this country. The specimen in 

 the Saunders Collection, in the British Museum, has the funiculus 

 joints not so long as in tuberum, (s.str.), but I have followed ForeP" and 

 Emery in the description. ForeP^ says that the small ni/laiideri have 



■■^0 F. cle la Suisse, p. 88. 

 21 loc. cit., p. 89. 



these joints almost as broad as long. I have not been able to see a ^ 

 .of coi ticalis, nor even a description of it. In the iSmith collection in 

 the British Museum is a (?* from Naples, labelled " curticalis var.," of 

 which the following is a description ; — 



Joints 2-5 of funiculus much longer than broad. Head rugose; mesonotum 



smooth and shining between the converging lines ; pedicel slightly rugose, and 



shaped as in lujlanderi ; gaster smooth and .shining ; epinotum with slight tooth 

 Jike tubercles. Too faded to judge of colour. 



Pedicel of L. ntjlauderi j 

 (Continental). 



Joints 2-5 of funiculus longer than broad. Mandibles quadridentate. Head, 

 mesonotum and pedicel, finely rugose. Gaster smooth and shining. Petiole even 

 more elongate and cylindrical than in tuberum, {s.str.). Epinotum without tooth- 

 like tubercles. 



Brown-black ; mandibles, antennae, and legs clear pale yellow. 



L. 2-5mm.-2-7mm Sub-sp. affinis, Mayr. 



From 3 J (J taken by Donisthorpe at Yvorne in 1912. I have 

 been unable to find a description of thist^ . 



•Joints 2-5 of funiculus twice as long as broad. Mandibles quadridentate. 

 Head, mesonotum and pedicel finely rugose. Gaster smooth and shining. I^etiole 

 ■viewed in profile slightly raised in centre and rounded on top, postpetiole slightly 

 longer than high. Epinotum with two blunt tooth like tubercles. 



