162 
Michigan, by Mr. C. M. Weed. Again, August 1, all stages were 
found by Mr. Garman at Cobden, and larve and imagos were also 
collected at Anna on the 10th, and sent me by Mr. Karle. On the 
11th the larve and pupez were less common than before, but the 
beetles were more abundant on the leaves. Many of the latter were 
also concealed in the mulching, and several were taken from cavi- 
ties in the earth. 
Some of the larve and pupz sent from Cobden August 1st were 
kept in earth at the Laboratory (after a careful study of the living 
specimens for subsequent identification) until they transformed, the 
first beetle emerging on the 11th. On the 24th the earth was ex- 
amined, and three more adults were found. 
These were the last immature examples seen, scattering adults 
only occurring in our collections during September, October and 
November. 
December 8, adults were taken at Cobden in abundance on the 
ground under the mulching, and under leaves and rubbish in 
unmulched fields. 
Tabulating these data, we get the following exhibit: 
Date. Imago. Larva. Pupa. 
PANU iO Peeeee a ee ee somsce. iCenitnalliaoesessereess 
08 TB 6 See eee Seon eee ICOINGIEIN 5 Sagoeuaco sacl 
Maen wewcmnce ce coeciere Willaprideesssss2ese- 
IMisiVel Steere ete cent oncccees es Ae ee oer 
OUIMO nl ete eer Se /Anna (in ground) ....| 
AUIS 2 ees aa Se eer ee Gondenteyse rose sesee \Cobdenteeeeeeeesees Cobdentes.2-o--as 
OD. Ops Repose iene fain meee Michigan tseessesneces (Michigan ys eee Michivanvasss soso 
FATHOM S Gplimers Goes Ga erate ees (Colydeneeras ta eas Cobden einen ences Cobden =: scneceseee 
Be OPretnee sccmn tc sense ASTUTE Raps soe ste is) es Seem | Ari raise Gaara cae ie 
: SE ee eee oa tos fee IDpaatengeab aves eee oonee| 
Oh oe eRe ee ee pm eh) < <0 eee 
peptemberl0 2 eee, i\G@oObd ent prccnescesenee 
ie Dworsrehe cutoaneeas | foe eek En oie oe 
WO CtObe UR He ee asece lINionmiall esses seen eee | 
INOMEMIDerILs eae cet coe iVilliaeRidves los se e8| 
WGCEMNELS sess oaccoceccce leguden Be ESSE ee 
Evidently, here we get no glimpse of a second brood, either early 
or late, but we find the beetles hibernating as mature insects, lay- 
ing their eggs in the ground in June (if we may give this interpre- 
tation to Mr. Butler’s observation of June 15), and appearing as 
adult beetles again late in July and in August. That an early 
brood actually occurs is rendered further very doubtful, by the fact 
that large collections of root-worms were made for me by an assistant, 
April 18, in the very fields at Cobden in which Paria larve were 
most abundant in July and August, but that every one of these 
April larve was Scelodonta. If it be said that the possibility of 
distinguishing the larve of these two genera is doubtful, and that 
the supposed Scelodonta larve just mentioned may really have 
belonged to a spring brood of Paria, the reply must be that they 
agreed not only in characters, but also in size and stage of advance- 
ment, with other larve taken at the same time, and afterwards bred 
to Scelodonta,—a fact totally inconsistent with the supposition that 
the former were Paria, since the periods of the two genera are quite 
dissimilar, Scelodonta unquestionably hibernating almost exclusively 
as a mature larva, and Paria as a beetle. 
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