JorPA. 233 



also the apox of the posterior pair ; the hyaline portion with a 

 light-blue iridescence, that on the apical portion is violet ; a line 

 at the inner orbits of the eyes, two ovate spots on the clypeus, 

 and a short line behind the eyes, white. The scutellum elevated 

 into a conical tubercle ; the posterior tarsi white, with the claws 

 black. The abdomen pctiolated, longitudinally striated ; two ovate 

 white maculae at the apex of the first segment. 



Hah. Costa Rica, Cache. 



A. Joppa elegantula. 



Female. Length 7-8 fines. — Black ; the anterior wings hyaline, 

 with a dark brown fascia before the stigma, the apex being dark 

 brown beyond the areolet; the posterior pair lighter fuscous at 

 their apex. The front, below the antenna), white, with two tri- 

 angular black maculae ; a white line at the inner margin of the 

 eyes as high as the ocelli, the line expanding at its apex into a 

 white macula, also a narrow lino behind the eyes ; the antennae 

 with three or four white joints a little beyond the middle, beyond 

 the white joints they are slightly thickened, and then taper to a point. 

 The scutellum elevated into a conical tiibercle, the base of the meta- 

 thorax also elevated ; the posterior tarsi white, with the two apical 

 joints black. Abdomen longitudinally striated, the apical margin 

 of the first and second segments with a white macula laterally. 

 The anterior and intermediate coxoe and legs beneath more or less 

 white, and in some examples a few joints of the antennae are white 

 beneath. 



Hah. Costa Eica, Cache. 



5. Joppa modesta. 



Length 5^ lines. — Yellow, with the vertex, the metathorax, the 

 scutellum and postscutellum, the fourth and following segments of 

 the abdomen, the intermediate and posterior tarsi, with the apex of 

 the posterior femora and the base of the tibia?, black. The three 

 basal segments of the abdomen finely striated ; wings hyaline, 

 slightly fuscous at their base, their apex and the anterior pair 

 beyond the areolet dark fuscous. 



Hah. Costa Rica, Cache. 



6. Joppa maculosa. 



Male. Length 8 lines. — Head, thorax, and three basal segments 

 of the abdomen pale yellowish white, with black markings above ; 

 the three apical segments of the abdomen ferruginous ; the scape of 

 the antennae black above ; antennae black, slightly thickened in the 

 middle, where are three or four white joints. Tliorax black above ; 



