BY ROWLAND E. TURNER. 169 



I include in this subgenus several groups which will probably 

 have to be separated later. The typical species has the first joint 

 of the maxillary palpi shortened and the labium with a tuft of 

 long recurved hairs at the apex. The female has the pygidium 

 very narrow and the mandibles long and acute at the apex. 



Most of the males I include in the subgenus have the mouth- 

 parts similar, as far as I have been able to examine them; but 

 T. apterus Oliv., has the palpi slender with subequal joints, the 

 maxillae and the labium smooth, and the labrum longer and less 

 contracted; T. purpureipennis Westw., has the labrum shorter 

 than T. apterus and truncate at the apex, and the palpi stouter; 

 in T. lubricus and T. vigilans Sm., the labrum is short, broadly 

 rounded at the apex in T. lubricus, smaller and more strongly 

 rounded in T. vigilans, the first joint of the maxillary palpi is 

 also shortened. 



The usual form of the pygidium in the female is broad with 

 almost parallel sides, vertically truncated and longitudinally 

 striated; the mandibles in the larger species are blunt. 



Ashmead places Lophocheilus Guer., amongst his Rhagigas- 

 terinae, but states that he has not seen specimens. His guess 

 that it may be the opposite sex of Eirone Westw., is wild. 



106. T. (Lophocheilus) villosus Guer. 



Lophocheilus villosus Guer.,Mag.deZool.xii. 12, P.103, figs. 7-13, 

 IU2($). 



Thynnus niger Sm., Cat. Hym. B.M. vii. p.30, n.76, 1859(<J). 



(J. Clypeus short, rather narrowly produced and truncate at 

 apex, closely punctured and without a carina. Head and thorax 

 very closely and finely punctured; scutellum subtriangular, almost 

 pointed at apex. Median segment very closely and minutely 

 punctured, rounded and narrowed to apex. Abdomen fusiform, 

 closely and shallowly punctured, the segments slightly constricted 

 near base. Hypopygium prominent at apical angles, thence 

 rather broadly rounded, subtruncate at apex, with an apical spine. 

 Length 14-17 mm. 



