260 
Typ. £. (Rhizobius) lanosus, Blackb. 
When I described &. lanosus (supra, p. 71) I noted the necessity 
cf regarding it as forming a distinct sub-section of Ahizobius. 
In studying the further supply of material sent by Mr. Koebele, 
T find that the difference in the pubescence which gives it a facies, 
different from that of typical Rhizobii is accompanied by a 
very considerably finer granulation of the eyes, and the veiy 
peculiar character of the claws of the anterior four legs being 
strongly bifid while those of the hind legs are appendiculate. I 
must therefore form a new genus. 
MIDUS. 
According to Mr. Crotch, in his “‘ Revision of the Coccinellide,” 
Scymnus stragulatus, Er. (from Tasmania), belongs to this genus, 
which M. Mulsant founded (on an African species) as a subgenus 
of Pharus. Mr. Crotch states that it is a good genus on account 
of its elongate subdepressed form, complete abdominal plates, 
coarsely granulated eyes, and long antenne. In his subsequent 
remarks Mr. Crotch seems to imply that he has not seen Erich- 
son’s species; but also states some of its characters with a 
preciseness that appears inconsistent with his not having seen it, 
making no remark on its antenne beyond what is implied in 
associating it with the African species 
Among the Coccinellide taken by Mr, Koebele in N.S. Wales 
and Queensland are three examples of an insect which, I think, 
is almost certainly congeneric with S. stragulatus, Er., and must 
be exceedingly close to it as a species. It is certainly not a 
Midus, as Mr. Crotch defines the genus ; but it agrees very well 
with Mulsant’s diagnosis of the same, which assigns to it eyes 
finely granulated. It differs also from the characters Mr. Crotch 
assigns to §. stragulatus in its elytral epipleurze not being dis- 
tinctly foveolate (although there is an exceedingly obsolete depres- 
sion opposite the hind femora). 
Unfortunately I have not an example of the African species of 
Midus for comparison, but I think it extremely improbable 
that this insect is really congeneric with them ; as, however, it 
seems to agree (in respect of the characters its author assigns to 
the genus) with Widus of Mulsant, although differing from the 
flatly contradictory characters assigned by Mr. Crotch I think 
it will be best to regard this insect for the present as a Midus. 
It may be noted that it bears a great resemblance superficially 
(especially in respect of its colour and markings) to Scymnus 
parallelus, Blackb., but differs from that species in important 
structural characters, especially in the form of its abdominal 
lamelle (which are transverse, their outline meeting the front 
margin of the segment externally quite close to the external 
