56 HYMENOPTEEA. 



3. Loboceras saussurii. 



Testaceum, pilosum, antennis (basi excepta), vertice, femoribus, tarsis abdominisque apice nigris ; coxis, tro- 



ehanteribus tibiisque albidis ; alis flavo-hyalinis, apice fumatis, costa nigra, stigmate testaoeo. 

 Long. 8 millim. 



Hab. Mexico, Orizaba (de Saussure). 



The sutures on vertex are broad and deep, and there is a narrower one behind the 

 ocelli ; the former run down the sides of the frontal area and unite round its lower 

 border, enclosing it completely, but at the angles of the area they are not so deep. 

 The clypeus is very slightly incised at the apex ; the mandibles are piceous at the 

 apex. The first cubital cellule is small ; the second is nearly double the length of the 

 third, which is only a little longer than the first ; the fourth is longer than the first 

 three together. The curved first recurrent nervure is received close to the middle of 

 the cellule ; the second is interstitial, but it is more in the third cellule than in the 

 second ; the transverse median nervure is received a little in front of the middle of the 

 cellule. The costa is black to near the commencement of the first cubital cellule ; the 

 apical cloud in the wings commences at the end of the stigma, and it curves back to 

 the second transverse cubital nervure. The anterior femora are broadly white at the 

 base. On the vertex the entire space bounded by the vertical and frontal sutures is 

 black. 



This species appears to be very closely related to L. mexicanum ; but that has no 

 black on the vertex. The costa is testaceous, like the stigma, and the tibiae are 

 testaceous. 



4. Loboceras calcar. (Tab. I. fig. 12.) 



Cephalocera calcar, Norton, Trans. Amer. Ent. Soc. i. p. 51; Catal. p. 20 ( $)\ 

 Hab. Mexico 1 . 



This species differs from the others in having the first cubital cellule longer 

 than the third, and in the transverse basal nervure being received quite close to the 

 transverse basal. 



5. Loboceras mexicanum. 



Loboceras mexicanum, Kirby, List of Hymen, i. p. 80, t. 6. f. 4 l . 

 Hab. Mexico, Orizaba \ 



6. Loboceras xanthostigma. 



Testaceum, pilosum, antennis, capite (ore excepto), abdominis apice, tarsis tibiisque posterioribus nigris ; alis 



flavo-hyalinis, apice fusco, costa et stigmate flavis. 

 Long. 7-8 millim. 



Hab. Panama, Bugaba (Champion). 



The face below and a little above the antennae is pallid yellow ; the scape is more or 



