20 MELANDER AND BRUES. 



American species has, like the East Indian form, bare, non-pubes- 

 cent macrochaetae, while the other American species of this sub- 

 family have them pubescent. 



Family Tachinid.t.. 

 Metopia leucocephala Rossi. 

 The interested observer of the Halictus mentioned in the first 

 part was captured for identification, and proves to belong to 

 this widely distributed species. 



Order Hymenoptera. 



Family Braconid.e. 



Subfamily Chelonin^. 



Chelonus brevipennis sp. nov. 



Female. — Length, 2 mm. Ferruginous, head piceous black, wings 

 reaching just beyond the base of the abdomen.^ Antenna; 21-jointed, 

 tapering as usual, and almost as long as the body, ferruginous at the base, 

 black at the tip, the third joint four times as long as thick, the apical joints 

 more or less quadrate-moniliform. Eyes smaller and less densely hairy 

 than usual. Head almost smooth above, shining, thinly pale pubescent, 

 piceous black above, ferruginous below, palpi yellow. Thorax ferruginous, 

 pronotum coarsely rugose reticulate above, mesonotum less distinctly so, 

 metanotum small, quadrate, not toothed at the posterior angles, rugoso- 

 reticulate ; pleurae not roughly sculptured, somewhat shining. Abdomen 

 with no traces of sutures above, dark ferruginous and sparsely white hairy ; 

 gradually broadened from the base and rounded at apex ; finely and irregu- 

 larly reticulately striate longitudinally, especially at the base. The incurved 

 margin is emarginate at the apex of the abdomen. Ovipositor stout, black. 

 Legs long and slender, yellow, the femora clavate. 



Described from a single female specimen collected at Woods 

 Hole, Mass., in a burrow oi Halictus pndnosiis. 



The present species seems best referable to Chelomis because 

 of its pubescent eyes. The apex of the abdomen however is 

 emarginate, somewhat as in Gastrotheca Guerin. Unfortunately 

 as the wings are rudimentary they can not be used to determine 

 its affinities. The only other apterous species belonging to this 

 subfamily are included in Acampsis Wesmael, from which the 

 present form differs by its unsegmented abdomen. 



1 Forneuratlon, see Biol. Bull., 1903, p. 189, Fig. 5. 



