412 Transactions South African Philosophical Society, [vol. xiii. 



Length 20-23 mm. ; width 9J-11 mm. 



Hob. Southern Khodesia (Salisbury, Mazoe, Matopos, Eusapi, 

 Sebakwe) ; Mozambique (Lourenco-Marquez, Bikatla, Beira). 



Feeds, like Gcelorrhina loricata, on gum of Acacia and Combretum, 

 on pods of Cassia, and on flowers of Protect, (G. A. K. Marshall). 



Gen. PTYCHODESTHES, Kraatz, 

 Deutsch. Entomol. Zeitschr., 1883, p. 391. 



Mentum of Baccloma, but slightly more parallel laterally, very 

 hairy on the outer face ; maxillae long, moderately slender, inner 

 lobe simple, upper lobe long, sub-falcate, densely hairy even on the 

 greatest part of the outer face ; last joint of palps of the normal 

 shape ; head and clypeus simple in both sexes ; clypeus incised 

 laterally at base, parallel, the outer angles plainly marked, although 

 slightly rounded, only slightly sinuate in front, carinate all round 

 but with the sides not projecting beyond the ridge, cephalic part 

 somewhat hairy ; antennal club longer than the pedicel in the $ , 

 nearly as long in the ? ; prothorax of the usual shape ; scutellum 

 very sharply acuminate ; elytra sub-parallel, pluri-costate ; sternal 

 process elongated, aculeate and sub-acuminate, not quite horizontal, 

 slightly slanting downwards, grooved along metasternal part, and 

 with a slight mesosternal suture ; anterior tibiae dentate at apex 

 only in the $ , those of the $ bi-dentate ; pectus somewhat hairy, 

 inner part of all tibiae sparsely pubescent ; hind ones with a sharp 

 tooth on the upper side. 



Kraatz proposed this genus for a series of African species formerly 

 included by Burmeister in the genus Coryphocera, sect. B, such as 

 C. altemata, KL, bicostata, Sch., africana, Drury, &c. ; but however 

 much the characters drawn from the shape of the sternal process 

 and given by him may apply to some species such as africana, &c, 

 viz., " mesosterni processus elongatus, gracilis, mucronatus, recur- 

 vus," it certainly does not to Coryphocera altemata. We have 

 already seen that a new genus (Isandula) was proposed by J. 

 Thomson for Goryphocera africana and allies previous to Kraatz 's 

 publication of his genus Smaragdcsthes. To this genus, with an 

 amended diagnosis must then be referred G. altemata. KL, bicostata, 

 Sch., &c. Not so,- however, S. ocrtzeni, Kolbe, which although 

 uncommonly like S. altemans, but larger, differs considerably in the 

 shape of the mentum and of the buccal organs, especially of the 

 upper maxillary lobe. The shape of the genital valves of the two 

 is of a quite different pattern. 



