ON THE CETONIIDyE OF SOUTH AFRICA. 
43 
affinity of transultation. I conceive Macrominus to approach Cetoninus somewhere between 
the gigantic Goliathi and the ccelocephalous Ischnostoma. I shall now therefore place here 
the following species brought home by Dr. Smith, and which is very curious, on account of its 
mentum being something like that of a Cremastocheilus. 
Sp. 21. (Cetoninus) Ischnostoma concava, G.P. 
Diplognatha concava, G. P. p. 121. tab. 17- fig- 4. 
Note. This appears to be tbe insect alluded to by M. Latreille in the second edition of the Regne 
Animal, as a Goliathus brought from the Cape by M. Yerreaux. Diplognatha albopunctata of Gory, 
which is also a Cape insect, is evidently to be placed in the same section. So also is the Cetonia 
geotrupina of Bilberg, which both Schiinuhcrr and Latreille consider to be a Goliathus, (See Syn. Ins. 
App. p. 46. 69.) Professor Klug has stated likewise his opinion that the Diplognatha albopunctata of 
Gory, and the Cetonia geotrupina of Schonnherr come close to the gigantic Goliathi. They are, in 
fact, only to be distinguished from them by their porrected clypeus, which, like that of Goliathus, has a 
central horn with a smaller lateral tooth on each side. Here, however, this middle horn is trifid, and the 
maxilla is of a different structure. 
77. The second section, Xiphoscei,i:de/e, has for its type an insect in my collection, which I 
suspect to be from Swan River in Australia. It is remarkable for its small round thorax, long 
arched posterior legs, incrassated femora, and for the apex of the posterior tibise being produced 
into a strong curved spine. The mouth agrees nearly with that of the following section. 
78. The third section, Arcade*®, comes very close to the sub-genus Cetonia, so close indeed 
as almost to make one suspect that it may form part of the Trichioid section of that sub- 
genus; nevertheless, the smallness of the mandibles and of the terminal lobe of the maxillae 
induce me to place it here. It is a groupe peculiar to the Cape, and offers two sub-sections, 
which completely agree in the organs of their mouth. 
Types. 
* * * * 
B.— Body convex. Thorax not homed. 2 Ischnostoma sanguinipes. 
(^3 * * * * 
f 4 Ischnostoma cornuta. 
A. — Body depressed. Thorax subcornute in the male. <( 
J r ^5 * * * * 
Both the above species have been brought from the Cape by Dr. Smith, and I shall there- 
fore enumerate them. 
Sp. 22. (Cetoninus) Ischnostoma sanguinipes, G. P. 
Cetonia sanguinipes, G. P. p. 254. tab. 48. fig. 4. 
Note. This is an insect that is almost as much a Cetonia as an Ischnostoma. I am not sure whether 
Cetonia sanguinipes and C. talpina of Klug, ought to be considered as distinct species, but I think 
that they are not the same. 
Sp. 23. (Cetoninus) Ischnostoma cornuta, Fab. 
Cetonia cornuta, Fab. Syst. Eleutli. vol. ii. p. 143. 
Scarabwus Areas, Oliv. tab. 9. fig. 83. 
Cetonia cornuta, G. P. p. 252. tab. 48. fig. 2. 
Note MM. Gory and Perclieron say of Ischnostoma cornuta as follows : “ Cette espece quoique ties 
anomale par la forme ne nous a paru susceptible de former un genre propre ; les parties de la bouclic la 
rapprochant tout a fait des vraies Cetoines.” This is quite correct ; tlie only difference between this 
species and the true Cetoniw being tbe cornuted thorax, and the comparative minuteness of tbe terminal 
lobe of the maxillee. It is truly osculant, between Ischnostoma and Cetonia, and comes close to the 
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