200 EUCOELA MANDIBULARIS. 



5. EUCOELA MANDIBULAKIS. 

 PI. IX, fig. 5. 



Figites mandibularis, Zett., I. L.,410. 



Eucoela mandibularis, Thorns., Oef., 1861, 404. 

 P similis, Cam., Trans. Bnt. Soc., 1883, 368. 

 ? basalis, Htg., Germ. Zeit., ii, 201 ; Giraud, Yerh. z.-b. 

 Ges. Wien, ix, 138, 12. 



Black, shining ; the flagellum of antennae (the scape only partly red), 

 the legs (except the base of coxae), reddish-testaceous to piceous-red ; 

 the tegulas brownish or piceous ; the base and ventral surface of abdo- 

 men piceous-red. Wings hyaline, with a slight smoky tinge; the 

 nervures fuscous; the first abscissa is almost straight, forming an 

 acute angle with the costal nervure. Antennas scarcely so long as the 

 thorax and abdomen united ; the third and fourth joints subequal; the 

 apical eight joints longer than broad, slightly thicker than the pre- 

 ceding, longish oval. Scutellum finely rugose ; the apex slightly 

 incised; the cup shallow, large, its sides fuscous; the foveas deep, longer 

 than broad, shining. Median segment laterally sparsely covered with 

 long white hair ; the keels black, stout. Abdominal hair-fringe narrow, 

 griseous. Cubitus traced for three-fourths of the length of wing. 



The (^ has the antennas more than one-half longer than the body, 

 the third joint a little longer than the fourth and piceous towards the 

 apex. 



Length 2^ 3 mm. 



It is doubtful if this is basalis, Htg., the description 

 being rather too laconic. It agrees fairly well with 

 basalis, Giraud, but the expression that the antennaa 

 are "as long or a little longer than the body" does 

 not quite agree with the <$ I have described, which 

 has the antenna considerably longer than the body. 

 E. mandibularis, Thomson, is probably the species I 

 have described. The abdomen may be entirely black. 



Not common. Clydesdale. 



Continental distribution : 



I now regard E. similis, Cam., as a smaller and much 

 more slender form of mandibularis. 



