281 
P.v.CHYTRTCHIDKS (First group of SninidesJ. 
The genus ParlnftrirJid ^ witli its six described species, 
monopolises this group. The species are all, so far as I have 
observed, rare in collections, nor liave any, I believe, been 
taken except in W. Australia. They are yer^? fine, large 
insects, and are very closely allied inter .vr. They have been 
fully dealt with by Dr. Sharp in the memoir ali-eady men- 
tioned, and I have nothing further to say about them. 
ACLOPIDES (Second group of Serir.'nlesJ. 
Represented in Australia, so far as known, by the single 
species, rhd^nof/iuiflid crirlisnui , ilojoe, which is fairly com- 
mon in collections, but seems to be limited, iv. respect of 
hahifat , to the far north of the continent. 
PHVLLOTOCIDES (Thiixl group of SericidesJ. 
For the present I must pass this group over with the 
mere remark that I am not yet prepared to deal with it more 
fully and confidently than I did in my former memoir (already 
referred to) ; for, although I have made some progress with 
a revision of that memoir, it is probable that I may be able 
at no distant date to examine certain types, the inspection of 
which will enable me to write more definitely than I could do 
at this time. 
DIPHUCEPHALIDES (Fourth group of SericidesJ. 
This last group of Australian Sericides contains two 
genera, Biyhuce'phala and Epholcis — the former numerous in 
known species, and widely distributed, many of its species 
very abundant. The latter, so far as at present known, al- 
most limited to tropical regions, consisting of not more than 
five described species, and not very frequent in collections. 
What I have said above concerning the Fhyllotocides may be 
repeated, itiiitatis niufandis, concerning this group, and I, 
therefore, omit further remark on it for the present. 
SERICOIDES (Third subtribe of Australian MelolonthidesJ. 
Having referred the rdchytricliides and ArlopidfS to the 
subtribe Sericides, I leave only two of the groups into which 
Lacordaire divided the Sericoides, as representing that sub- 
tribe in Australia, viz., the Ileteronycides and Stetha^pides. 
They are distinguished from eacii other by Lacordaire as fol- 
lows . — 
A. Species not having a sternal projection ... Heteronycides 
AA. .Species furnished with a sternal projec- 
tion ... ... ... ... ... ... Srethaspides 
The former of these is by far the most abundant in 
species of all the 'groups" of Australian Melolonthides. The 
