I>,c. .8,:, TOWNSEND ■. D.ITERA FROM THE TaMAUUPAN REG.ON. 117 



the 9 \ have the tip of abdomen distinctly blackish, but several 1 's 



have it more or less reddish. j„,i„da 



Giglio-Tos makes this species a queried synonym of O d.smde^ 

 Walk The specimens which I originally referred to 0. '"^''7'' '^^ 

 E,' Soe Wash., .891) varied in length from 8-.0 mm. ; wh.le tho^ 

 f ferred to O. }JJs were no. only much shorter, but proportronate y 

 much mailer in size, so that i, -emed hardly probable that aUbeloned 

 to one species, I am aware that size may be of no importance as a 

 specie character, and since I have more recently found speamens f 

 all gradations in size between the two forms, so that it was ^PO^f''' ? » 

 p rate them into two series, I am inclined to believe - *- '» 

 I advocate, however, the use of the name eucAen^r, instead of dos.ades 

 as used by Giglio-T^s, and this for the reason that the description of 

 III beuer applie; to the normal specimens. Were we to take he 

 ZL that comes first in the pagination of Walker's List, we would have 

 to employ epy/«s, which is manifestly only a synonym of eucAe,wr. 



Jurinia apicifera IVa/i. 



Eight specimens, Brownsville, as follows : Two, ^ , 9 , J™e J . ; 

 one ?, Tunc .., and four 5 's, June .4, taken on flowers of Z<//>» 

 ZJojJa Michx'. ; and one S , June .8. length, ..^^4 mm^ 



The species which I have always recognized "^i^f ^^^^ ™; 



may be distinguished by the following characters : The front except 



Tar thorax and scutellum are characteristically brassy-yellowish 



ometimes grayish-brassy) pollinose; the abdomen is sb.mng bUck 



the fourth segment being conspicuously silvery (or grayish-ashy) polli- 



™'' One of the specimens above mentioned ( i , June .4), i" which the 

 thorax "id scuteUum have become greased, shows the 8-"^ ™ " ° 

 the disc of thorax to be opaque black, while the humeri and lateral 

 margins are tawnyyellowish, and the whole scutellum is brownish- 



''"°This species has the frontal vitta of ^-ft ''"^'^-y^"-' --™;=: 

 ocher-yellow. The occiput is clothed with brassy-yellow hair of the 

 :ame tLge as the pollen of thorax, sides of front, and scutel -n Th 

 whole face, including sides of face and usually -^^' ^''^^^^^^ ^^l 

 Brownsville specimens is pure silvery-white ; while in "°^*J" ^^P^" 

 mens from Michigan it is usually very distinctly golden. I ^^^ > '^'"^y 

 r^arkedonthispectaiarity^fdif.^cebe.eenno^^^^^ 

 specimens (Tr. Am. Ent. Soc, XXil, p. -jo). 



