1914] Brues—The Phoril Genus Platyphora of America ris 
1912. Becker, Wiener Ent. Zeit., vol. 31, p. 329 (Psalidesma). 
1913. Becker, ibid.,- vol. 32, p. 19. 
1913. Collin, Entom. Monthly Mag., vol. 24, p. 174, fig. 
Type: P. lubbocki Verrall. 
The four species so far recognized may be distinguished as 
follows: 
1. Third vein of wing entirely bare and not forked at apex..... P. pyrenaica Becker 
Third vein bristly to the fork, which is indicated at least weakly.............. 2 
2. Fork of third vein very delicate; segments of abdomen becoming shorter after 
PIVEWSECOM Cite seem meee aA act cleus ce SsLEEN clove uses ayant P. lubbocki Verrall 
3. Fork of third vein well developed; second and sixth segments of abdomen elon- 
GEG os. cols cae pee CoO O Re oOo 6 de Cp BOWaN bon 8 01g OOD IO tense ra traiscrs 4 
4. Legs andantennz brownish yellow; scutellum shagreened. P. coloradensis sp.nov. 
Legs and antennez black; scutellum polished, shining... .. P. eurynota sp. nov. 
Platyphora pyrenaica Becker. 
Wiener. Ent. Zeit., vol. 31, p. 330, figs. (1912) (Psalidesma). 
Becker, ibid., vol. 32, p. 19 (1913). 
Platyphora lubbocki Verrall. 
Journ. Linn. Soc., vol. 13, p. 259 (1877). 
Lubbock, Ants, Bees and Wasps, p. 371 (1883). 
Bezzi. Rendic. Istit. Lom. Se. Lett., vol. 33, p. 11 (1900). 
Becker, Abh. zo6l.-bot. Ges. Wien, vol. 1, p. 88 (1901). 
Brues, Trans. Amer. Ent. Soc., vol. 29, p. 316 (1903). 
Shelford, Journ. Linn. Soc., London, Zodl., vol. 30, p. 152 (1908). 
Enderlein, Zoél. Jahrb, Abth. f. Syst., vol. 27, p. 148 (1908). 
Becker, Wien. Ent. Zeitg., vol. 32, p. 19 (1913). 
Collin, Entom. Monthly, Mag., vol. 24, p. 174, fig. (1913). 
Platyphora eurynota sp. noy. 
o. Length,2.8mm. Entirely black, except the trochanters which are brownish 
yellow, and the hypopygium which is piceous, with the lower projection fusco- 
ferruginous; wings hyaline. Head from above slightly more than twice as broad as 
thick, the hind margin straight and finely margined; anteriorly receding on each 
side to the margin of the large eye which occupies the entire side of the head when 
viewed in this position. Laterally the head is very much narrowed below, and not 
quite so high as the height of the nearly horizontal front. Antennal cavities shallow, 
each with four small reclinate macrocheete along its lower margin and a group of 
three reclinate ones just to the side of the insertion of the palpus. Antenne with 
the third joint rounded, rather small, bearing a long, bare arista, fully as long as the 
width of the front. Cheeks each with a series of minute bristles below the eye, ex- 
tending upwards to join with the postocular cilia which are very weakly developed. 
Palpi extremely small, with a tuft of four or five small bristles at the extreme tip. 
Front highly polished, with scattered hairs, but no macrochete although there are 
a few stouter, bristly hairs along the posterior margin of the vertex. Ocelli large; 
no frontal groove. Mesonotum large and broad, shining and clothed like the 
