228 NATURAL History BULLETIN. 
slender, half the length of the tibiz, which are longer than 
the femora, joints two and three equal in length. Claws equal 
in length but not in strength. : 
Habitat. Ohio river to the Great Lakes. 
Ceptius, Leconte. ( xpdewor, careful). 
Antennal tubercles transverse contiguous, antennz eleven- 
jointed. Palpi with the last two joints unequal, cotyledonous, 
the third triangular or lunate acuminate inside; fourth thick, 
oblong or triangular free angles rounded. Tarsi with the last 
two joints equal, claws two, equal, anterior femora strongly 
tri-spinous. Body robust compact. 
C. ZIEGLERI, Lec. Umber brown, punctate, pubescence 
appressed, short and dense. Length 2.7mm. PI. VL, Figs. 
wean. 21. 
Head from base to frontal margin equal in length to the 
width just behind the eyes, tempora not prominent, nearly 
straight, convergent, shorter than the large prominent coarsely 
facetted eyes; frontal tubercles transverse, half as long as 
wide, separated by an ample sulcus which extends half way to 
the base. Disk between the eyes convex, punctured, with 
two circular fovez in the line of the posterior margins of the 
eyes and twice as distant from one another as from the eyes. 
On the under surface of each side behind the eyes is a 
strong prominent spine. Clypeus convex, rounded anteriorly. 
Palpi with the second joint as long as the third or 
fourth, curved, fusiform; third triangular, the basal and free 
angles acute, the sides including the latter angle longest, 
apical angle rounded. Fourth joint fusiform sides arcuate. 
Antenne nearly half as long as the body, robust, the first 
joint as long and wide as the frontal tubercles; second, third, 
and fourth equal, as long as wide; fifth smaller, subglobular; 
sixth and seventh globular subequal; eighth shorter, transverse, 
and differing in the sexes, that of the male having the inside 
prolonged into a very long, sharp, flat tooth, reaching to the 
base of the tenth joint. Ninth obconical, twice as wide as the 
