THE GROUP OF PLACIDUS. 89 



29. NEMATUS APIOALIS. 

 PL XVIII, fig. 3, Saw. 



Nemaius apicalis, Htg., Blattw., 201 ; Cam., Fauna, 31, 7 ; 

 Andre, Species, i, 137, Cat., 19,* 

 119. 



Black, covered (especially on head, sides of thorax, breast and abdo- 

 men) with moderately long fuscous pubescence ; mouth, tegulse, apex 

 of femora, tibise and tarsi and apical abdominal segment white, or 

 sordid white, apex of hinder tibise and tarsi black, the four anterior 

 tarsi more or less fuscous. Wings hyaline, costa and stigma white, 

 nervures fuscous, paler at the apex of the wings. Antennas as long as 

 abdomen and half the thorax, covered with close pile, the third joint 

 much shorter than fourth; vertex and front coarsely punctured, 

 frontal area sub-distinct ; clypeus roundly incised. The third cubital 

 cellule is about one-fourth longer than broad, slightly dilated at the 

 apex ; second recurrent nervure interstitial ; recurrent nervures in hind 

 wings interstitial. The spurs are short, scarcely one-third of the length 

 of metatarsus ; the tarsi are shorter than the tibiae. 



Length 3| lines. 



In coloration this species is almost identical with 

 Thomsoni, but it is narrower, the pubescence is much 

 shorter, especially on the mesonotum ; the pronotum is 

 entirely black, the tegulas are fuscous- white ; the 

 antennas are longer, cenchri smaller ; the abdomen is 

 more narrowed towards the apex, and is not so much 

 truncated. Apicalis has considerable affinity with the 

 Caprece-group, but is readily separated from any of the 

 species by the almost totally black body. 



Rare. Clydesdale, Germany. 



IX. THE GROUP OF PLACIDUS. 



Body short, broad, blade, more or less reddish-yellow 

 on head, thorax, and on underside of abdomen. An- 

 tenna? long, filiform, reddish beneath. Wings hyaline, 

 stigma yellow, or pale testaceous. Clypeus broadly, but 

 not deeply, incised, or almost transverse. 



The species of this group is not unlike N. mollis, 



