198 Mr. Shuckard^s Monograph of the Dorylidae, 



* Peduncle suhtriangular and concave above. 

 Sp. 1. Lab. Fargeavii, Shuck. Length 14 lines. 



Rufo-fusco-hirtus, cap'de thoraceque etfemorihus nigris, ccetera rufo-fuscus, 

 ahdomine supra rufo-sericeo. 



Labidus Latreillii, St. Fargeau, Hist. Nat. des Hymenop. (Suites 

 a BufFon), torn. i. p. 229. i. 



" Head and antennae black. Mandibles brown black. Thorax black : me- 

 tathorax pi-olonged in the centre of its sides into an obtuse point. Ab- 

 domen, legs, and tarsi reddish brown. First segment of the abdomen 

 furrowed longitudinally above ; its sides raised into a carina which ter- 

 minates posteriorly in a point. The whole insect enveloped in long 

 reddish upright hair, excepting the back of the 2 — 5 and base of the 

 sixth segments of the abdomen, but which are covered with a close de- 

 cumbent reddish silky down. Femora blackish. Wings of a reddish 

 yellow." 



I have not seen the preceding insect, but a comparison of its de- 

 scription, which is verbally translated above, with the next but one, 

 which is the genuine Lab. Latreillii, will distinctly show that they 

 must be different, and that the present one was incorrectly attri- 

 buted. I have consequently given it the name of its distinguished 

 describer. It is apparently the largest in the genus. 



Sp. 2. Lab. Jurinii, Shuck. Length 10^ lines; 



Expansion 20 lines. 

 Rufo'testaceus, pubescens : capite {mandibuUs antennisque exceptis) nigro ; 



pedunculo abdominis subtrigono, supra valde concavo ; pedibus longis- 



simis. 



Entirely of a reddish testaceous, excepting the vertex and the face, which are 

 black. It is throughout pubescent, excepting the metathorax and the 

 surface of the peduncle. The antennae are long, setaceous, and curved; 

 the scape robust, and about one- fourth the length of these organs, 

 which are inserted about the middle of the clypeus, within two deep 

 cavities internally acutely carinated, and these carinas, which ascend 

 the face, abruptly truncated at about one-third the length of the scape : 

 ocelli placed in an equilateral triangle on the vertex : mandibles very 

 long and much arched, leaving a nearly circular space between them 

 and the clypeus. 



Thorax having the scutellum moderately large and prominent, not very gib- 

 bous ; metathorax smooth and shining, nearly perpendicular ; superior 

 wings with their marginal cell lanceolate ; the first submarginal penta- 

 gonal, and larger than the second, from which it is separated by a waved 

 transverso-cubital ; the second transverso-cubital straight and directly 

 transverse ; the recurrent nervure inserted at about one-third the length 

 of the second submarginal : legs long, the posterior pair extending as 



