276 Mr. P. Cameron on 



midclie. Postscutellum rounded. Median segment obliquely- 

 depressed from the top to the postscutellum ; tliere are three 

 central areje — a large central and one on either side of it at 

 the top, those being somewhat rounded on tlie outer side ; the 

 spiracular area is defined and extends to the apex. Abdomen 

 with seven segments, the basal five longitudinally striated ; 

 the apical segments smooth ; the segments project at the 

 apices on the sides beneath ; the ventral fold is on the second 

 and third segments. 



]n Kriechbaumer's classification of the " Joppinen " this 

 genus is referable to the Holojoppinai and comes nearest to 

 the American MiWoJoppa, which diflfers from it in the areolet 

 being four-sided, the nervures being united at the top, in the 

 scutellum not being quite flat and not incised at the apex, and 

 in the ventral fold being distinct. Theantennoe in my genus 

 are shorter, the head is not so much depressed between tlie 

 eyes, the abdomen is longer compared with the thorax, and the 

 areolet is not so oblique; the legs are stout. Characteristic 

 is the strongly longitudinally striated back of the abdomen. 



Gathetus melanocerus, sp. n. 



Luteus ; flagello antennarum abdominisque apice nigris ; alis flavo- 



hyalinis, apice violaceo. J et $ . 

 Long. 16-17 mm. 



Antennas black, the scape rufous beneath, the apex fuscous ; 

 the scape closely punctured, thickly covered with short fuscous 

 hair. Head luteous, the face paler, the inner orbits slightly 

 yellowish ; the face closely punctured, the clypeus punctured 

 in the middle, its sides almost smooth ; the inner orbits 

 distinctly and sharply margined ; the base of the mandibles 

 yellowish, the teeth black. Tliorax luteous ; the middle of the 

 mesonotum slightly darker; the pleurje with a faint yellowish 

 tinge on the lower side. Mesonotum closely punctured, 

 thickly covered with short fuscous hair. Scutellum shining, 

 slightly narrowed towards the apex, flat, covered with large 

 moderately deep punctures ; the ]jostscutelluni very smooth 

 and shining, the space on either side of it strongly longitu- 

 dinally striated. The base of the median segment in the 

 middle slightly raised above the top of the postscutellum ; the 

 whole segment at the base separated from the mesonotum by 

 a deep wide transverse depression. The base of the median 

 segment in the middle smootli, impunctate, this smooth space 

 being continued shortly down the middle on either side of 

 the central depression ; the rest of the segment coarsely, 

 transversely, irregularly striolated ; the arese are not clearly 



