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than half the length of the second; fourth, fifth and sixth about equal 
in length, each shorter than the second and longer than the third; 
seventh longest, equal in length to the fifth and sixth united; whole 
antennae very slightly hairy, hairs minute and not more than one or 
two a joint except the last which has a scattering whorl about the 
tip, What are here counted as third and fourth joints may in re¬ 
ality form together the third joint, as the suture is not distinct in 
any specimen, under a high power. 
The body, when the powder is removed, appears to be quite smooth; 
a large spine-like hair extends back-ward from each side of the tip 
of the abdomen. 
I have been puzzled to make out the beak, which is evidently very 
small and apparently pressed into a kind of groove or depression on 
the breast. The eyes have not been distinctly made out, though a 
slight tubercle has been observed in the place of each. 
The head can scarcely be distinguished; the annulations are very 
distinct and regular. 
The antennae and tarsal characters if allowed to prevail, would 
appear to place this species- in Trama , but the third joint /of the 
antennae is shorter than the others which conflicts with the character 
of that genus in this respect. The form and habits are like those of 
Tychea. It is also evidently very closely allied to Rhizobius sonchi 
'Pass., which is found on the roots of Sonchus oleracea and other allied 
plants and is described by Passerini as follows: 
“Powdered with white; elliptical oblong, distinctly annulate. 
Antennae very short, pilose, first five articles ovoid subequal, last sub- 
clavate and longer than the preceding. Legs very short; tarsi termi¬ 
nated by a single claw.” 
Found at Cardondale, Illinois, in November, on the roots of grass, 
apparently Poa annua. 
Genus TYCHEA. Koch. 
The general form is broadly oval and quite convex; the segments 
distinctly marked, those of the throax similar in appearance to the 
others. Beak rather long, and thick. Antenna? very short five-jointed 
according to Passerini and six-jointed according to Koch, but it is 
probable that the former author omits the little spur at the tip of 
the fifth joint which is usually present, while the latter counts it; the 
third joint longest usually equal to the fourth and filth. Honey-tubes 
wanting. 
The species so far as known are wingless and reside on the roots 
of plants. 
