CIMBICIDiE. 255 



DESCRIPTION. 



Body black, shining, covered with soft and woolly whitish hairs, punctured more or less. Head, 

 excluding the mandibles, depressed, orbicular, as wide as the trunk ; mandibles crossed, very sharp, 

 black ; upper lip subpentagonal, flat with a longitudinal elevation in the middle, hairs on this part 

 black ; anterior margin of the nose wavy, emarginate in the middle ; antenna; with the fourth, fifth, 

 and sixth joints testaceous ; three eyelets behind the antennae arranged in a triangle ; eyes oval, pro- 

 minent ; vertex square, marked out by a ridge on each side : trunk subglobose : prothorax with a 

 longitudinal furrow : thighs and coxse black-blue ; under a strong magnifier beautifully and most 

 minutely reticulated which gives them a silky lustre ; the rest of the leg is testaceous ; the two pos- 

 terior pair of thighs are thicker than the others and armed at the apex with a short tooth on each 

 side, between which is a cavity to receive the shank when folded ; tarsi with a sucker underneath at 

 the apex of the four first joints : wings testaceous with piceous nervures, and a cloud at the tip : 

 abdomen ferruginous with a dorsal triangular black spot, extending from the base towards the apex, 

 but not entering the last segment ; the basilar ventral segments are spotted with brown. 



I at first regarded this insect as a variety of Cimbex Vitellince, but the colour of the antennas and 

 legs differs ; and what Linne meant by the words labio caret, is not clear — but as the upper lip is 

 very conspicuous, though entirely black, it cannot be supposed to agree in that respect ; unless we 

 interpret his words as meaning that it had not a white lip like C. Amerina, the next species, which 

 seems not very probable. St. Fargeau, in his Monograph on the Saw-flies ( Tenthredinetce,) has 

 a Cimbex Vitellince, but his description does not agree with that of Linne. 



(353) 2. Trichiosoma Lucorum. (Leach.) Trichiosoma of the groves. 



Trichiosoma Lucorum. Leach. Zool. Misc. iii, xxviii, 110, 5. Steph. Ilhtstr. Mandib. vii, 10, 4 



Cimbex Lucorum. Fab. Syst. Piezat. 16, 2. St. Farg. Tenthred. 33, 89. 



Tenthredo Lucorum. Linn. Syst. Nat. ii, 921, 6; Fn. Suec. 1537. Fab. Ent. Syst. ii, 105, 2. Vill. Ent. iii, 81, 6. 



Length of the body 7 > lines 



Expansion of the wings 15 J 



A single specimen taken in Lat°. 65. 



DESCRIPTION. 



Body black with a very slight aeneous tint ; glossy, hairy with cinerascent hairs, those of the 

 trunk long. Head orbicular, scarcely so wide as the trunk; upper lip small, convex, orbicular, 

 punctured ; antenna; black : wings subhyaline with a cloud at the tip ; nervures some piceous and 

 others rufous : thighs black with a very slight tint of blue ; posterior pair armed with a tooth : 

 abdomen short, subovate, black, covered more or less with short decumbent down ; black above, 

 underneath reddish at the tail. 



