CERATOMYIELLA AND PARADIDYMA REINHARD 35 



Type.— Male, U.S.N.M. no. 44769, from College Station, Tex. 



Remarks. — Described from 14 males and 11 females in my collec- 

 tion. All taken at College Station, Tex., September-November 

 1920-1933 (H. J. Keinhard), and one male from Hidalgo County, 

 Tex., May 18, 1932 (S. W. Clark). In the United States National 

 Museum, one female from La Providencia, Obispo, Guatemala (C. 

 M. Kouillard). 



(19) PARADIDYMA AFFINIS, new species 



Male. — Front at vertex 0.288 of the head width (average of five: 

 0.29; 0.28; 0.29; 0.29; 0.29), hardly widening to middle thence rap- 

 idly so to antennae where it is moderately prominent; paraf rentals 

 gray pollinose to vertex, moderately clothed with rather coarse black 

 hairs outside the frontal bristles ; median stripe red, occupying about 

 one-third the frontal width; inner verticals large, outer pair not 

 developed; orbitals absent; frontal bristles extending below middle 

 of second antennal segment, uppermost one reclinate ; ocellars pres- 

 ent, proclinate ; antennae about as long as face, basal segments sub- 

 equal in length, third segment black, six or seven times longer than 

 second which is largely yellow; arista black, thickened about to 

 middle, finely pubescent, second segment short; face gray pollinose, 

 moderately excavated, receding with the lower border slightly prom- 

 inent between vibrissae; facial ridges weakly divergent downward, 

 bearing a few bristly hairs next to vibrissae, which are situated on 

 the oral margin ; palpi slender, pale yellow, with several long black 

 hairs on lower edge beyond the middle; parafacial gray pollinose, 

 bare except a row of bristles along the inner margin, those in lower 

 part of row approximating the frontals in size; cheek reddish in 

 ground color, thinly gray pollinose and bare above, about two-fifths 

 the eye height; eyes distinctly haired; back of head densely gray 

 pollinose and thickly clothed with pale or whitish hairs. 



Thorax black, gray pollinose; mesonotum marked with four nar- 

 row black stripes, which are not very conspicuous especiall}'^ behind 

 the suture ; scutellum black, covered with dull gray pollen, which is 

 thinner on middle of disk; chaetotaxy as in validinervis but with 

 three postsutural acrostichals usually present ; postscutellum normal, 

 thinly pollinose; sides of postnotum beneath calypters bearing a 

 tuft of small black hairs ; calypters semitransparent, white. 



Abdomen black, dusted with gray pollen, which in certain views 

 extends thinly behind the middle on the intermediate segments; 

 viewed from above the first segment pollinose on sides and the three 

 following ones shining black on posterior third to half; first seg- 

 ment without median marginals ; second with one pair ; third bearing 

 a marginal row of 10 to 12 ; fourth with a discal and a marginal 



