ASHMEAD : CLASSIFICATION OF THE CHALCID FLIES 427 



femora armed with a large tooth, followed by eighteen small black teeth ; abdomen in 9 fusiformly 

 pointed, the petiole at least thrice as long as thick, in c? long ovate, the petiole at least four times as 

 long as thick S. unilineata. 



62. Hind coxse immaculate 63 



Hind coxse with a black stripe beneath. 



Mesopleural furrow black ; abdomen conic-ovate, more or less banded with fuscous, the petiole 

 not thrice as long as thick ; legs, except as noted, yellow, immaculate S. lineocoxalis. 



63. Some old species fall in here. 



64. The two black lines on the anterior part of the middle mesothoracic lobe unite and form a loop or a 



delta-shaped mark, which is sometimes connected with the base of the scutellum by a black line. 65 



The two black lines on the anterior part of the middle mesothoracic lobe do not unite to form a loop 



or delta-shaped mark 73 



65. Mesopleural spiracles surrounded by black 66 



Mesopleural spiracles not surrounded by black , . . 71 



66 The black loop on the middle mesothoracic lobe is connected with the base of the scutellum by a 



central black line 67 



The black loop on the middle mesothoracic lobe is not connected with the base of the scutellum by a 

 central black line 71 



67. Lateral mesothoracic lobes not margined with black along the inner margin, at the most with a black 



spot 68 



Lateral mesothoracic lobes margined with black along the inner margin. 



Hind femora with a black spot on disk outwardly S. chapadensis. 



68. Hind coxse immaculate, except at extreme apex ; abdomen conic-ovate, fusiformly pointed or lanceo- 



late 69 



Hind coxse with a black spot above. 



Abdomen short, globose <S'. brancensis. 



69. Hind femora immaculate, or at most with a small spot at apex, the disk never maculate 70 



Hind femora with a curved black spot across the disk and a small black spot at apex. 



Abdomen conic-ovate S. vagabunda. 



70. Abdomen fusiformly pointed or lanceolate, the petiole at least thrice as long as thick S. magrettii. 



71. Lateral mesothoracic lobes with an abbreviated black line on the inner mai'gin. 



Hind femora immaculate or at most with a small black spot at apex 72 



Hind femora with an oblong black spot on disk near the upper margin. 



Hind coxse immaculate S. van. 



72. Hind coxse with a small black spot above ; loop on the middle mesothoracic lobe more or less incom- 



plete, the lines interrupted on each side of the line from the base of the scutellum. . . .S. incomplefa 

 Hind coxse immaculate ; loop on the middle mesothoracic lobe complete . S. persimilis. 



73. Scutellum with three triangular black spots at base and a triangular black spot at apex S. fulleri. 



74. Scutellum with three black spots at base, the apex with a black spot or with a central black line . . 75 

 Scutellum with a transverse black line at base or with only two black spots 76 



75. Lateral mesothoracic lobe with a black spot ; hind femora with a black spot at apex ; abdomen fusi- 



formly pointed, the ^letiole from two and one half to three times as long as thick. 



Hind coxse with a black spot at base above ; petiole of abdomen yellow ; pronotum with four 



black spots S. hollandi- 



Hind coxse immaculate, or without a black spot at base above ; petiole of abdomen black ; pro- 



