254 HYMENOPTEKA. 



furrow joins the hinder ocelli ; clypeus bluntly carinate, finely rugose, and with some 

 scattered punctures ; mandibles obscure ferruginous along the furrow, the hair long and 

 fulvous. The scape of the antennae with some large punctures, and a few long golden 

 hairs at the apex ; the flagellum with pale down. The pro- and mesothorax thickly 

 covered with silvery hair. The pronotum closely and strongly punctured, the base very 

 finely and closely, the extreme base still more closely punctured and covered with a 

 silvery pile. The mesonotum in the centre with very few punctures, except at the 

 apex; the space bounded by the furrows with some large punctures; the sides 

 impunctate. The scutellum is impunctate down the centre, the other parts bearing 

 large, distinctly separated punctures. The median segment is finely and closely punc- 

 tured at the base ; the apex indistinctly striolate. Abdomen with the basal segment 

 finely punctured, the second segment more strongly punctured all over, the third, 

 fourth, and fifth segments impunctate at the base, the rest closely and finely punctured ; 

 the pygidium longitudinally striolated, sparsely haired, the apex fiery-red ; the ventral 

 segments very shining, the apices with some punctures and some long pale hairs. The 

 legs densely covered with silvery hair ; the tarsal spines on the anterior legs ferrugi- 

 nous ; the calcaria white ; there is a large yellow mark on the hind coxae behind. 



Abdomen with spots and hands. (Species 9-13.) 



M 9. Myzine pulchrina. (Tab. XII. fig. 18.) 



Nigra, capite et thorace lsete flavo-maculatis, abdomine balteis 8 flavis; alis fere hyalinis, antice fumatis. 

 Long. 12 millim. 



Hab. Panama, David in Chiriqui (Champion). 



Head black, shining, moderately strongly punctured, covered with not very long pale 

 hair, which is longer on the clypeus ; a mark on either side of the clypeus, two marks 

 over the antennae, a line on the inner and outer orbits of the eyes (the outer line 

 extending beyond the eyes, and becoming joined to a curved line at the top of the 

 vertex), clear yellow. The scape of the antennae is white at the apex above ; the 

 flagellum is brownish beneath, and bears a pale microscopic pile. The pro- and meso- 

 thorax covered with long white hair ; the pronotum strongly punctured ; the centre of 

 the mesonotum with very few punctures, the part limited by the furrows strongly 

 punctured, except at the base, which is opaque and very finely punctured, the sides 

 impunctate ; the scutellum strongly punctured ; the median segment finely punctured 

 at the base, the apex impunctate, indistinctly striated. There are two large yellow 

 marks in front of the pronotum, and a narrower smaller transverse one behind ; the 

 central part of the mesonotum and two lateral marks, a mark on the scutellum, the 

 postscutellum, the lateral margins of the median segment, a large mark below the 

 tegulae, a smaller mark at the apex of the mesopleurae, and a still smaller one on 

 the metapleurae, bright yellow. Abdomen shining, the black with bluish reflections ; 



