HYMENOPTEROITS family STEPHAISID.E. 775 



"Niger, capite rufo ; alis fere hyalinis, 5 long. 19 mm.; 

 terebra 25 mm. Hah. Panama, Yolcan de Olurique, 2500-4000 

 feet." (Cameron.) 



5 . Head coarsely rugose, vertex more finely ; posterior 

 margin of head simple. Antennae very slender, about two- 

 thirds of length of body, scape elongate ; basal flagellar joints 

 normal. Neck coarsely, semiannular more finely trans-sti'iate. 

 Scutellum smooth, with large and coarse marginal punctures. 

 Mesopleurse aciculate, rather dull ; metapleurae rugose and dull. 

 Median segment nitidulous, with large and diffuse punctures. 

 Petiole irregularly but closely trans-striate, as long as remainder 

 of abdomen. Terebra half as long again as body. Hind legs 

 with coxse striolate, more strongly towards apex, inner side 

 densely pilose ; femora smooth, bidentate ; tibiae and tarsi 

 covei'ed with dense, shining, fulvous pubescence. 



Black with red head. Wings subhyaline. 



Length 19-21 mm.; terebra 25-35 mm. 



Habitat: Panama (Cameron); Amazon (Bates). Type in British 

 Museum. 



The present species may be best separated from cylindricus 

 Westw. by the much longer terebra and by the sculptxire of the 

 pro- and meso-thorax a.nd of the hind coxae. It also resembles 

 H. 'wiistneii Schlett., from which it may be known by the simple 

 posterior margin of the head, coarser puncturation of the 

 scutellum, and by the greater size. 



In 1861, Smith described a Fcenatopus ruficeps, and subse- 

 quently withdrew his genus Fcenatopus as synonymous with 

 Stephanus . On these grounds Schletterer {I. c.) altered the 

 specific name to capitatibs. More recent investigation has 

 resulted in the original genus Stephanus being divided into a 

 number of subgenera, in each of which it appears permissible to 

 repeat a specific name ; hence I restore the original name 

 ruficeps given by Cameron. 



16. vADosus Schlett. 



Stephanus vadosibs '^cliXett.j-^.liQ, $ '■> Roman (2), p. 11, ? d' . 



5 . Head irregularly rugose, frons fiiiely, occiput more 

 coarsely and tra,nsversely in front ; posterior margin of head 

 simple. Second flagellar joint barely twice as long as first ; 

 third longer than first and second together. Neck feebly trans- 

 rugose, semiannular polished smooth above, obsoletely rugose 

 below. Mesonotum with irregular to transverse superficial 

 rugosity, central row of punctures distinct, lateral ones indistinct. 

 Scutellum polished smooth, marginally punctate. Mesopleurse 

 shining above, dull beneath ; metapleurae irregularly rugose, 

 not separated from median segment, which is smooth shining, 

 very difi"usely punctate, with distinct marginal sulci. Petiole very 

 finely trans-striate, little shorter than rest of abdomen ; second 

 segment basally finely rugose, apical third longitudinally striate, 

 fourth longitudinally divergently striate. Terebra longer thai:^ 



