220 Mr. W. Bainbridge's Observations on 



the white spots are fewer in number and differently located, and 

 the elytra do not terminate in a spine. 



Sp. 1 1 . Amphistoros affinis, Bainbridge. 



Affinis Cet. elatce, Fab., at differt. Nigra, thorace lineis tribus 

 albis. Ely tris flavis, ad apicem albo-punctatis, anoqiie utrinque 

 macula albd rotundata insignito. Corpus infra nigro-piceum, 

 medio abdominis concolori, lateribus albo-maculatis. 



Long, lin. 7, lat. lin. 4. 



Habitat in Sierra Leona. 



It is with a doubt I describe this as a new species; I shall there- 

 fore state at length the difference between what I have named 

 affinis, and the Cetonia elata of Fabricius, and the varians of 

 Messrs. Gory and Percheron. In markings and in colour it cannot 

 agree with the former, and with regard to varians it is shorter and 

 broader than that species, and differs very considerably in its 

 sculpture and markings ; its leading peculiarity is, that the centre 

 of the abdomen is pitchy black, without the usual row of spots. 

 I mention this as I believe it to be a sexual difference, the same 

 variation occurring in the species named elata by Fabricius. It 

 appears, therefore, that this species must be compared with varians 

 of Gory and not with elata; it differs from the former, in the 

 markings of the thorax, in the absence of the two round spots at 

 the apex of the elytra ; the podex is also differently marked, having 

 a small round white spot on each side, whereas in varians it is 

 almost entirely white. There is probably another species allied 

 to affinis, which I do not attempt to describe till I ascertain the 

 opinion of those who are competent to judge on the matter. I 

 believe no entomologist has yet mentioned any thing concerning 

 the sexes of this genus. 



Stethodesma,* Hope. 



Forma Gymnctidis. Clypeo fisso sicut in Lomaptera. Thorax 

 trigonus, antice abrupte truncatus, postice disco protenso 

 ut in Gymnetkle. Elytra gradatim basi ad apicem attcnuata, 

 medio acuminata. Sternum valde prominens, oblique fissum, 

 apice antice elongato. Pedes anteriores femoribus bispinosis, 

 reliquis inarmatis. 



* So nanieJ fiom trrt^Bo^icr/Aoi;, a bandage of the breast. 



