28 Mr. T. D. A. Cockeiell — Descriptions and 



Rohertsonella cratcegina, sp. u. 



(J. — Length 7^-8 mm. 



Black, with white pubescence ; abdominal segments 1 to 4 

 with conspicuous white apical hair-bands, that on 1 broadly 

 interrupted ; segments 5 and 6 conspicuously hairy ; six 

 ventral segments visible, the last strongly emargiuate, the 

 S'^cond concave and shining, the third with a patch of white 

 hair on middle of apical margin. 



This species is in nearly all respects like M. gleasoni, 

 Titus, the only previously known member of the genus, but 

 is considerably larger, and the second recurrent nervure ends 

 much nearer to the apex of the second submarginal cell, 

 while the basal nervure fails to reach the transverso-medial. 

 The characteristic appearance of the face and antennae and 

 the fine sculpture are quite the same. 



Hah. Lee County, Texas, March 15, 1907, and Fedor, 

 April 14, 1901 {Birkmann). 



It occurred at flowers of Cratcegus. 



Calliopsis color atipes fedor ensia, subsp. n. 



$ . — Similar to G. coloratipes, but a little larger, and with 

 the disk of the first abdominal segment quite densely baset 

 •with very minute punctures, very similar to those on the 

 second (in color atipes this part is smooth and shining, with a 

 few scattered punctures). Eyes ochreous ; clypeus with two 

 broad black bars, not reaching the summit ; lateral face- 

 marks ending in a point above, their upper inner margin 

 wavy; dog-ear marks represented by small spots; hair of 

 vertex and thorax above pale fulvous. 



I should consider this a distinct species were not the forms 

 of the C. coloradensis group so variable. The insect is 

 superficially very much like the S. -American Parafriesia 

 prinii (Holmbg.). 



Hah. Fedor, Texas, Sept. 21, 1897 {Dirkmann). 



At Fedor Mr. Birkmann also takes (April, June) C. an- 

 dreniformis^ Smith ; the females rather large and less dis- 

 tinctly banded than usual. 



Panurginus polgtrichus, sp. n. 



^ . — Length about 6 mm. 



Black, head and thorax densely clothed with coarse dull 

 whitish hair ; thorax without light markings ; pale colour of 

 face confined to clypeus, which is broad, shining, and very 

 pale yellowish, a sort of ivory tint ; labium and mandibles 



