644 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. 39. 



A. conspicuum) , and the second goes a like distance beyond apex. 

 There is a small pulvillus, present also in typical illustre. I think 

 there is no doubt that Anthidium illustre must be referred to 

 Diantliidium. The Flagstaff specimen also has these characters: 

 First two abdominal bands notched behind laterally; black on inner 

 side of hind femora not notched; other colors, of head, legs, etc., nor- 

 mal; hair of face, and head and thorax above strongly reddish; 

 yellow occipital band not interrupted. This female takes on some of 

 the color characters normal for the male. It is possible that a dis- 

 tinct subspecific form of D. illustre exists in the region about Flag- 

 staff, but more material is needed to decide this. 



NOMADA BELFRAGEI, var. XANTHOGASTER, new variety. 



Female. — Agrees with Cresson's description of N. hefragei, except 

 as follows: Only a slight blackish suffusion about ocelli; thoracic 

 markings clear lemon yellow; abdominal segments 1 to 5 each with 

 a very broad lemon yellow band, but those on first and second nar- 

 rowly interrupted in middle, and that on first including a small red 

 spot on each side posteriorly; venter with yellow spots down the 

 middle, those on segments 3 and 4 large and conspicuous. As in 

 true helfragei (concerning which I have notes from Mr. Viereck, based 

 on Cresson's type), the third antennal joint is conspicuously larger 

 than the fourth, and the basal nervure meets the transversomedial. 

 The second s. m. is considerably narrowed above, and receives the 

 first r. n. a little beyond the middle. The anterior coxal spines are 

 present, but very short. From the related N. wheeleri Cockerell this 

 is easil}^ known by the entirely terra-cotta red mesothorax and meta- 

 thorax. Supei-ficially, it looks exactly like N. lamarensis Cockerell, 

 but is easily separated by the very large, strongly punctured tegulse; 

 the much lighter wings; and the hair at apex of abdomen all pale 

 (much black in lamarensis) . The coarsely punctured abdomen sepa- 

 rates it at once from the similar species of Xanthidium. 



Habitat. — Texas (Belfrage). 



Type.— Cat. No. 13427, U.S.N.M. 



NOMADA MACULIFRONS, var. COMPARATA, new variety (? new species). 



Female. — Length about 10 mm.; differs from Smith's description 

 of maculifrons as follows: Lateral black bands of mesothorax much 

 enlarged, so that it is better described as black marked with red; 

 antennae clear ferruginous, not at all fuscous above; vertex and front 

 except sides (which are red) black, the black extending down to sides 

 of clypeus, but inclosing a large red supraclypeal mark; metathorax 

 black, with two obscure small red spots on each side; scutellum 

 black, strongly bigibbous, the gibbosities yellow with a red margin; 



