44 



ON THE CETONIIDiE OF SOUTH AFRICA. 



Cetonia Tiispicla of Olivier. There is no affinity to the genus Syrichtus whatever, or to any of the 

 Dynastidce. The relation between them is one of analogy. 



79. The fourth section is from the Cape, and is, like the fifth, typical of Ischnostoma. I have 

 called it Heteroclit^, because I suspect the insect described by M. Gory as "Ischnostoma 

 heteroclyta" will be found to belong to it. A species of this section has been brought home by 

 Dr. Smith ; but, like that of the Museum of Natural History at Paris, is in sad preservation. 

 I must here observe, that M. Gory's figure of Ischnostoma alhomaculata is singularly incorrect, 

 and therefore I am led to infer that the figure of I. heteroclita is incorrect also ; the more so 

 as M. Gory's description of the heads of these two insects does not agree with his figures. 



Sp. 24, (Cetoninus) Ischnostoma spatnlipes, n. s. 



Descr. Ischnostoma atronitida, capite porrecto clypeo quadrato margine reflexo apice emarginato 

 lobis rotundatis, corpore valde convexo, thorace subsemicirculari punctato marginato, scutello 

 magno, elytris sub-rugosulis apice subtruncatis, metasterno brevissimo truncato, tibiis anticis 

 extus tridentatis, calcaribus posticis spatuliformibus. 



Long. 10 lines. 



Note. This species may be the C. cordata of Fabricius. It has an indentation in the centre of the 

 thorax, being the first vestige of the deep one that exists in Ischnostoma cornuta. 



80. The section Cuspidate is, like the last, singular for its trichioid form, but differs in the 

 body being more depressed, and in the clypeus being of a very peculiar form, owing to its 

 extreme length, and the sides of it being at the base deeply emarginate. The feet are also 

 longer and less strong ; but both sections are remarkable for a long narrow labrum, which, 

 however, is exceedingly minute in proportion to the size of the insect. 



Sp. 25. (Cetoninus) Ischnostoma pica, n. s. 



Descr. Ischnostoma atroviolacea velutina punctata, pilis nigris operta, thoracis vittis marginalibus 

 elytrorumque vittei. marginali humerum nee suturam mediam attingente albis, corpore 

 infra atronitido, pygidio maculis duabus albis magnis, pedibus nigerrimis calcaribus posticis 

 acutis. 



Long. 10 lines. 



Note. This species is very close to the Cetonia cuspidata of Fabricius, but there are no " puncta duo 

 cinerea inter antennas," and the whole of the margin of the thorax is not cinereous, "Whether Ischnostoma 

 pica be identical with the Melolontha albomarginata of Herbst, I know not ; but certainly it is very 

 different from the Ischnostoma alhomaculata of Gory, which is in my collection. But we now return to 

 the section of Arcadew, which, as I said before, comes so close to the Cetonia hispida of Olivier. By 

 this section we arrive at the 



Sub-genus 5. Cetonia, G. P. 



8 1 . This groupe is typical of the genus Cetoninus^ and contains perhaps more species than all 

 the rest of the family of Cetoniid(B put together. Cetonia may be distinguished from 

 Goliathus by the males not being horned, but having their clypeus of the same shape as that 

 of the females. The anterior tibiaB are also similar in the sexes, which distinguishes the sub- 

 genus from Schizorhina, to which it closely approaches. From Ischnostoma, Cetonia may be 

 separated by the sub-quadrate and emarginate mentum, and by the long penicilliform terminal 

 process of the maxillse. In Cetonia the plantula between the ungues appears to be generally 

 present, only it is apt to be rubbed off by use. The pseudonychia do not seem always to be 



