^o.B.] PATTON ON ACULEATE IIYMENOPTERA. 367 



the pubescence on <lisk of clypeus fuscous, and that on thorax iiTxn o 

 ochraceous. The base of the mandibles touches the eyes. Labium 

 with coarse confluent punctures, the apex smooth and with two shght 

 elevations, one on each side of the median line. Clypeus densely and 

 strongly punctured, with no median smooth line, the margin with an 

 impressed line. Thorax and abdomen opake, impunctured. Anterior 

 femora beneath, and the intermediate tibia? and the basal joint of their 

 tarsi above, with pale pubescence. The scopa upon posterior tibite and 

 base of first tarsal joint white externally. Tarsal claws ferruginous at 

 the base. Wings hyaline, the nervures and tegulae dark piceous. Apical 

 margins of the four basal segments of the abdomen milk-white; the 

 margin of first segment narrow, that of the three following segments 

 broad and slightly sinuate on each side anteriorly. Segments two to 

 five with a thin black i)ubescence, which becomes white at the sides 

 and is very short on segments two and three. Venter shining, the seg- 

 ments punctured and set with black pubescence. 



The large size and the white margins of the abdominal segments 

 readily distinguish this from all described species, except Smith ii Cress. 

 and Walshii Cress. The females of Smithii and Walshil are not described 

 in such a manner as to be independently recognizable, but are said to 

 have white bands upon all the segments "except the last." If this 

 statement is correct, the present species differs in having no white 

 margin on the fifth segment. But, as Mr. Cresson has in other instances 

 described the fifth segment as "the last," it is impossible to determine 

 what his meaning is. 



46. BoMBUS PENNSYLVANICTJS (Dc Geer), 9. 



47. BOMBUS SCUTELLARIS CreSS., 5 . 



ADDITIONAL SPECIES FROM WESTERN CENTRAL KANSAS. 



Planiceps concoloe, Smith, 5 . 



From Smith's description this differs only in the greater size (length 

 .56 in.). 



Compared with P. niger Cress., the face is more flattened, the head is 

 densely pubescent, the thorax is longer and the median impressed Ime 

 on the metathorax is very indistinct, the second recurrent nervure is 

 received well beyond the second submarginal cell, the submedial cell of 

 anterior wings extends "upon the externo-median nervure barely beyond 

 the medial cell, and in the posterior wings falls very little short of the 

 medial cell. In P. niger the second recurrent is received barely beyond 

 the second submarginal cell, the submedial cell of anterior wings extends 

 well beyond the medial cell and of posterior wings falls well short of it 

 on the externo-median nervure. 



Ceeopales elegans Cress., <?. 



Differs from the 9, the only sex described, as follows: length .40 in.; 

 face below and between antennae and broad orbits yellow, two basal 



