HENRY L. VIERECK. 397 



each side of the scutel and postscutel ; wings colored as in fempifents; legs simple 

 and more or less reddish-yellow, excepting the coxffi, trochanters and basal por- 

 tion of the femora, claws castaneous. 



Ahdomen. — Very as in tempiferm, but the margins not wrinkled, simple, rather 

 coarsely punctured ; the black portion of the first and second dorsal segments 

 not at all hourglass shaped, but more pyramidal; pubescence nearly as on the 

 head. 



Type. — University of Kansas. 



Type locality. — Thomas' Ranch, Oak Creek Canon, 20 miles 

 southwest of Flagstaff, Coconino Co., Arizona. 



Paratype % differs from the type as follows: niesonotum with two 

 curved reddish lines, tubercles brownish testaceous, second joint of 

 the flag-el mostly reddish, hook of antennae brown. 



Collected in August, 1902, by F. H. Snow. 



Odynerus (Stenodyneriis) yniuns n. sp. (PI. XIII). 



Has much the same form as taos, but the second dorsal segment 

 of the abdomen is reflexed as in rectanguUs or nearly so. Com- 

 pared with taos it differs as follows: 



Head. — Practically the same, but 12th and 13th joints of antennae cylindrical 

 and of about the same width or diameter. 



Thorax. — Rather dullish; scutel with a median longitudinal impressed line; 

 postscutel not at all produced but rather flattened ; metanotum with a yellow 

 spot on each side; femora simple, the anterior and middle pair partly black, 

 mostly yellow, the posterior pair mostly black, yellow only at tip, tibise also 

 simple, almost entirely yellow, tarsi brownish testaceous. 



Ahdomen. — Practically as in taos, excepting as already described. 



The yellow portions of this species, as represented by the type, are lemon 

 yellow. 



Type. — University of Kansas. 



Type locality. — Thomas' Ranch, Oak Creek Canon, 20 miles 

 southwest of Flagstaff, Coconino Co., Arizona. 

 Taken in July by F. H. Snow. 



Otlyiierus (Mai'icopodyiierus*) maricoporuin n. sp. 



Subgenerically related to the group represented by toltecxis, from 

 which it differs, especially in the peculiar abdomen. The points in 

 which it differs from toltecus, see description "Syn. Amer. Wasps," 

 Saussure, are as follows : 



%. — 7 mm. — Head. — Clypeus apparently broader than long; black, clypeus 

 entirely luteous, anterior aspect of scape luteous, with a brownish tint, above 

 blackish, brown below, yellow markings of the face confined to that portion 



* N. subg. Type 0. M. martcoporum Vier. 



TRANS. AM. KNT. SOC. XXXIII. JANUARY, 1908. 



