4 ENTOMOLOGICAL NEWS [Jan., '19 



low, but the tips black ; honey tubes black. Mounted them in 

 balsam. This appears to be a new species, near L. agilis Kal- 

 tenbach." 



I have not seen specimens of Eulachnus agilis Kaltenbach 

 which may or may not be the same as Eulachnus rileyi Wil- 

 liams, but I find this species to be distinctly different from Wil- 

 liams' species. Types in U. S. Bureau of Entomology collec- 

 tion. 



The main differences are shown in the following comparisons 

 between the two. 



Oviparous Female Eulachnus rileyi Eulachnus thutibcrgii 



Hairs Coarse, spinelike Fine, semi-setaceous 



Antenna 1.22 mm. long 1.02 mm. long 



Hind Tibia 1.78 mm. long i.n mm. long 



Alate male Eulachnus rileyi Eulachnus thunbcrgii 



Antenna 2 mm. long 1.53 mm. long 



Hind Tibia 2.05 mm. long 1.33 mm. long 



S e n s o r i a Numerous, small Numerous, larger 



than in E. rileyi 



Apterous oviparous female. Specimens in balsam appear to have 

 about the same color and characteristics as E. rileyi? Color grayish 

 brown. Antennae and legs dusky brown. Body elongate and furnished 

 with long semi-spinelike hairs. Similar hairs occur on the antennae 

 and legs. Beak short and extending to the hind coxae. The last seg- 

 ment is a narrow black piece without length and is hardly separated 

 from the preceding segment. Antennae reaching slightly beyond the 

 base of the hind coxae. Third antennal segment approximately as long 

 as the fourth and fifth. The fifth slightly longer than fourth or sixth, 

 the latter two being about equal. The fourth and fifth segments each 

 bear a single sensorium near the distal end. Cornicles with the base 

 hardly more than a millimeter in depth. Cauda short and broadly 

 rounded. Hind tibia somewhat stout and with numerous small sen- 

 soria along the basal two-thirds. 



Measurements. Length of body, 2.34 mm. Length of antennal seg- 

 ments, III, 0.378 mm.; TV, 0.16 mm.; V, 0.2 mm.; VI, 0.16 mm. Total 

 length, 1.53 mm. Length of hind tibia, i.ii mm. 



Alate Male. General color, head and thorax black. Antennae and 

 legs, except the middle parts of the first and second tibiae, deep brown. 

 Genital plates dusky black. Cauda light colored. Hairs on antennae, 

 legs and body as in the apterous forms. Body long and slender, an- 

 tennae reaching beyond the hind coxae. 



