Horn.] . Cea 564 [April 19, 
CE f i 
C. lineaticollis, n. sp. 
Oblong-oval, piceous, opaque, depressed. Head finely granulate, sparsely 
pubescent. Thorax nearly twice as wide as long, sides feebly arcuate, hind 
angles broadly rounded, margin explanate, finely serrulate, dise at middle 
moderately convex, and at sides with three finely elevated lines, surface 
opaque, finely granulate. Elytra finely striate, striee rather coarsely punc- 
tured, each alternate interval more convex especially at base and indis- 
tinctly granulate. Body beneath and legs dark ferruginous, sub-opaque. 
Length .10 inch; 2.5 mm. 
This species is smaller, more elongate and depressed than the preceding 
and differs especially in the three fine lines on each side of the thorax and 
the alternation of the elytral intervals. 
The specimen before me is badly rubbed and I cannot de- 
seribe its vestiture. 
Two specimens; South Carolina and Florida. 
DITOMA Iilig. 
Antenne eleven-jointed, inserted under the margin of the front, last two 
joints forming an abrupt club. Antennal grooves wanting. Eyes moder- 
ately large and convex, coarsely granulated, nearly entirely free. Tibiz 
slender, feebly broader at tip and with minute terminal spurs. Intercoxa] 
process triangular, acute. 
The remaining characters are fully exposed by Lacordaire. 
This author speaks of the hind margins of the ventral seg- 
ments being emarginate, this certainly does not occur in any 
species known to me. The antennee in one species (sulcata) 
depart from the usual form in a rather suggestive manner, 
the ninth joint being much wider than the eighth, so that 
there is a feeble attempt at a triarticulate club. I follow the 
example of Mr. Crotch (Check List) in including Hulachus 
carinatus Lee. in Ditoma, notwithstanding its semi-cylindri- 
eal form. That it may fairly represent Mulachus I have very 
little doubt, but the genus seems very much out of place 
where Erichson left it. 
Our species are as follows: 
Antenne with ninth joint not wider than the eighth. 
Form semi-cylindrical, thorax longer than wide .............. carinata. 
Form depressed, thorax wider than long. 
Elytra piceous black, three or four rufous spots on each. .quadriguttata. 
Elytra piceous, two rufous spots on each.............-....... ornata. 
Antennee with ninth joint much wider than the eighth. 
Form depressed, thorax wider than long, color rufous.......... sulcata. 
