326 PROCEEDINGS OF THE NATIONAL MUSEUM vol.88 



This species is known to me only from the type, a single male 

 specimen collected in Jacksonville, Fla., by W. H. Ashmead, and an- 

 other specimen collected in the same city by Mrs. A. T. Slosson. Both 

 specimens are, unfortunately, in very poor condition, but they show 

 a few slight characters that serve to distinguish them from S. sub- 

 ohsoleta (Cresson), which they closely resemble. Larger series of 

 specimens will probably show that these differences are not of specific 

 value, but, as no intergrades have as yet been found, it is better to 

 consider these specimens as representatives of a distinct species. 



Description. — Male: 3.5 mm. Identical in all respects with the 

 male of S. subohsoleta (Cresson) except in the following particulars: 

 Dorsum of thorax entirely black, without any color spots; antennal 

 scape (fig. 9, j) short and stout ; frontal tentorial pits located at level 

 of ventral margin of scrobe cavity, midway between antennal bases 

 and anterior margins of compound eyes ; width of malar space slightly 

 less than one-third height of compound eye; area of gena caudad of 

 frontogenal suture provided with short, irregular carinae and minute 

 reticulations ; combined widths of compound eyes three-fourths width 

 of interocular space at level of compound eyes ; diameter of posterior 

 ocellus slightly less than one-third width of interocellar space; apex 

 of mesoscutellum provided with a narrow lamina which is only very 

 slightly depressed on meson ; apex of metatibia acute ; no lateral pro- 

 jections present on propodeum; petiole one-half as long as wide, 

 glabrous on dorsal side. 



Female : Unknown. 



Type locality. — Florida. 



Type. — Holotype, male, 51946, U. S. National Museum. 



Host. — ^Unknown. 



Distribution. — Florida : Jacksonville, W. H. Ashmead, 1 male (holo- 

 type) ; Mrs. A. T. Slosson, 1 male. 



The side Group 



The side group of species comprises the most distinct section of the 

 genus Spilochalcis. These species are all small or minute, predom- 

 inantly black, and provided with small, irregular color spots. The 

 lack of a frontogenal suture and the malar space being almost always 

 one-half or more the height of the compound eye will most readily 

 distinguish these species, but, in addition, they always have the clypeus 

 nearly as long as wide, and possess an extremely shallow scrobe cavity. 

 All have two teeth on the left mandible and three on the right, and the 

 reticulations of the body are minute and irregular, with glabrous sur- 

 faces almost completely absent. An inner tooth is always present on 

 the metafemora, and the outer ventral teeth are numerous and minute. 



