SPH^EEOPHTHALMA. 353 



black ; the basal segment dilated towards the apex, covered with long white hair ; on 

 the base of the second segment are two large marks, longer than broad and truncated 

 at the apex, of golden pubescence ; the apex of the second segment, the third and the 

 fourth segments, and the sides of the fifth, covered with silvery pubescence. The 

 pygidium longitudinally striated; the sides bordered with long fuscous hair. The 

 basal ventral segment covered with long white hair ; the keel stout, gradually raised 

 from the base to the apex, which is oblique and is rounded at the top ; the second 

 ventral segment very strongly punctured and sparsely covered with white hair ; the 

 other ventral segments densely covered with silvery pubescence and hair. The legs 

 black ; the tibial spines and the calcaria black. 



^73. Sphaerophthalma dictynna. 



Nigra ; capite, apice mesonoti metanotique maculis 2, abdominis apice segmentoque 2° argenteo-hirtis. $ . 

 Long. 14 millim. 



Hab. Panama, Bugaba 800 to 1500 feet (Champion). 



The head as wide as the thorax, rounded in front and behind, densely covered with 

 pale silvery pubescence ; the eyes much longer than the part of the head behind them ; 

 the mandibles entirely black, and covered with long silvery hair at the base. The 

 antennae stout ; the scape covered with long silvery hair, the flagellum with a dense 

 pale pubescence ; the third joint about one-half longer than the fourth. The thorax is 

 more than twice the length of the head, narrowed from the middle towards the apex, 

 rounded in front, the apex with an obliquely rounded slope, black ; the apex of the 

 mesonotum with a broad band of fulvous pubescence ; the median segment with a 

 band of fulvous pubescence on either side ; the mesopleurse densely covered with 

 silvery pubescence ; the metapleurse shining, bare, the extreme apex coarsely punc- 

 tured. The abdomen not much longer than the head and thorax united, black ; the 

 basal segment covered with long pale hair, and at the apex densely fringed with silvery 

 pubescence ; the second segment with two round pale yellow spots at the base and two 

 larger ones towards the apex, the sides at the apex clothed with silvery pubescence, 

 which is also the case with the sides of the third segment ; the fourth and fifth 

 segments covered with silvery pubescence. The pygidium longitudinally striated, 

 fringed at the base and at the sides with long fulvous hair. The second ventral 

 segment with the keel not extending to the middle of the segment, its apex straight ; 

 the second ventral segment has widely separated punctures and is very sparsely covered 

 with long white hair ; the other ventral segments are densely covered with pale fulvous 

 pubescence and hairs. The legs are black, sparsely covered with white hair; the 

 tibial spines black, the calcaria white. 



biol. CENTK.-AMEE., Hymenopt., Vol. II., March 1895. 2 zz 



