300 S. W. WILLISTON. 



Jiiriiiia (Fabricia) hystricoides n. sp. 



/^ ^ .—Like J. hystrix {a), but the third anteniial joint comparatively larger 

 and longer, the second abdominal segment with only two median posterior spines 

 and the front tarsal joints of the female not dilated. Length 14-17 mm. 



The third joint of the antennse is about twice as long as the second, the frontal 

 stripe is broader and more noticeable, the epistoma less projecting than in /. 

 hystrix, and the abdomen does not have the thickened and rigid spines charac- 

 teristic of that species, but has more slender and less numerous ones ; where, in 

 hystrix, the second segment has a row of ten to fifteen stout spines in the middle 

 behind, the present species has but two smaller ones, and only about twelve in 

 the hind border of the third. Most especially, however, does the female differ 

 in not having the front tarsal joints at all dilated. The species or form that I 

 have called c under hystrix occupies a singular middle position between the two 

 in this respect. 



Hab. — Connecticut, District of Columbia, Virginia, Georgia, New 

 Mexico, Arizona. 



A specimen from California is more deeply black, the antennae 

 lighter, the abdomen with a bluish reflection. 



Jurinia lateralis Macquart, Dipt. Exot. ii, 3, 42, 8, pi. iii, fig 10. 



Ten male specimens from New Mexico agree very well with the 

 description of this species. 



Jurinia siuaragdina Macquart, Dipt. Exot. ii, S, 39, 2, pi. iii, fig. 6 ; ? J. 



amethystina, ibid. 42, 9, pi. iii, fig. 7. 



'^ 9 .— Tegulai nearly white; third joint of the autenuse longer than the sec- 

 ond, convex in front; thorax dusted, deep greenish blue-black; abdomen deep 

 shining black with greenish reflections; second and third segments without 

 median anterior bristles. Length 12-15 mm. 



Antennfe red, third joint a half longer than the second, strongly convex in 

 front, largely black. Dorsum of thorax with a distinct greenish bluish reflec- 

 tion, when seen from behind rather thickly poUinose and with two distinct 

 slender stripes in front. The alidomen deep shining, but the green or blue re- 

 flection or color not so evident. 



This species is given by Macquart with the habitat " Bresil ?" but 

 his descrii)tion applies so fairly well that the name may be provi- 

 sionally accepted for our species. The length of the antennal joints 

 prevents the acceptance of J. amythystina Macquart, and the color 

 of the tegulae of J. vlrginiensis Macquart. 



Jurinia apicifera Walker, List, etc., iv, 718. 



/^ 9.— Second joint of antennte reddish yellow, but little shorter than the 

 anteriorly convex third. Thorax shining brassy, but partly concealed beneath 

 yellowish pollen. Abdomen shining metallescent black ; no anterior median 

 bristles on the second and third segments; extreme tip and hypopygium fre- 

 quently red. Legs black ; front female tarsi moderately dilated ; front femora 

 poUinose behind. Wings lightly brownish, yellowish at the base. Tegulse nearly 

 white. Length 12-14 mm. 



