64 THE entomologist's record. 



the metatborax, over and under the same, is a brown border. The nodes are 

 longitudinally rugose ; the abdomen short and roundish. The legs are bare. 

 Known from the two preceding in the 5 by the red club to the antennae, the 

 entirely black-brown abdomen, the bare legs, short spines, and 1'2-jointed 

 ant€nnffi. 

 ? (deiilated only known). Nearly 2 1. Black-brown ; thorax and abdomen 

 shining. Mandibles, antenniB and club, legs, brown-red, the femora brownish. 

 Head long, striated; thorax with coarse strire, the middle ones raised like a 

 keel. Thorax broad and flat above ; mesothorax and scutcllum finely 

 striated longitudinally. The metatborax has two short, nearly horizontal, 

 spines. Nodes longitudinally rugose; abdomen broad, short, roundish. 



This species is found rarely here under the bavk of oak trees near 

 the Gilnsberg. 



Forel, Les toiirmis de la Suisae, Zurich, 1874, pp. 84 and 85. 

 B. WoRKEKS. — Antennae 12-jointed. Legs without hairs. Clypeus not concave 

 in the middle; it is generally furnished with a small median keel, and with 

 two or more lateral keels (or stria) . . . 2nd species, Leptotliora.v tiiheyuiit. 

 A slight channel between the mesonotum and metanotum. Club of antenniB 

 yellow, like the rest of the body ; a black-brown transverse band on the first 

 segment of the abdomen ; the top of the head is often slightly brownish-yellow. 

 Thorax finely rugose. Spines of metanotum broad at their base, about 5 as 

 long as their basal width. L., 2-3mm.-3mm. 

 a. .. .. .. .. .. .. 1st race. L. vijlanderi, Foist. 



(7?i all the following races there is no channel between the niesonotiun and 



metanotum ; the hack of the thorax is unbroken). 

 Spines of metanotum very broad at their base, extremely short, hardly J as 

 long as their basal width ; their upperside is almost horizontal (forming 

 an unbroken line with the back of the thorax), and their lowerside vertical. 

 Antennffi entirely red-yellow, as well as the mandibles, tarsi, and joints 

 of the legs. The rest brown-red ; the top of the head and abdomen black- 

 brown. Thorax more coarsely rugose than in the preceding. L., 2-5mm.- 

 -3-2mm. 

 /'. . . . . . . . . . . . . 2nd race. /.. corticalis, Schenk. 



Spines of metanotum narrow, straight, about half as long as their basal 

 width. Thorax more coarsely rugose than in tuberum i. sp., more finely 

 than in allinis. lieddish. Head, abdomen except a yellowish spot at the 

 base, femora and club of antenna? deep brown. L., 2-6mm.-3mm. 

 c. . . . . . . . . . . . . 3rd race. L. ni/triceps, Mayr. 



Spines of metanotum more than two-thirds as long as their basal width, 

 slightly curved at the end, and extremely narrow, hardly wider at the 

 base than at the point. Thorax coarsely rugose longitudinally. Yellow 

 with a slight tinge of red. Middle of femora, forehead, vertex, and top of 

 abdomen, except the front of the first segment, brownish ; club of antenna3 

 most often brownish, sometimes almost red-yellow. L., 2-6nim.-3"3mm. 

 </. . . . . . . . . . . . . . . 4th race. L. u[linis, Mayr. 



Spines of metanotum variable, generally half as long as their basal width, 

 or a little longer. Thorax finely rugose. Yellow or reddish-yellow ; 

 club of antennce, top of the head (especially the vertex), and middle of 

 the top of the abdomen, brown, more or less deep. This race is very 

 badly defined. Colonies that inhabit bark often merge into L. a[)inis, 

 and those that live under stones, into L. ni(iriceps or L. interruptus. 

 L., 2-4mm.-3mm. 

 e. .. .. .. .. .. 5th race. L. /((/^c/khj, i. sp., Fabr. 



Spines of metanotum fairly narrow, upright, short, a third, or, at most, half 

 as long as their basal width. Thorax finely rugose. Yellow: club of 

 antennic, front of head (never the vertex), and often an indistinct band, 

 broken in the middle, on the first segment of the abdomen, blackish- 

 brown. L., 2-2mm.-2-5mm. 

 ;. . . . . . . . . . . . . Gth race. L. interruptus, Schenk. 



Like the former, but larger. Band on first segment of abdomen clearly 

 defined, unbroken, black-brown ; front of head and club of antennaj 

 reddish or brownish. Spines of metanotum halt as long as their basal 

 width, or a little longer. L., 2omm.-3-5mm. 

 g. .. .. .. .. .. .. 7th race. [,. nnifascititus, hn.tr. 



Entirely yellow ; club of antenna) and front of head perhaps slightly 



