BY THOMAS G. SLOAXE. 447 



Speaking from memory, I should say this species has a great 

 resemblance to, and is perhaps congeneric with Meonis ovicoliia, 

 JNIacl. ; but I have not been able to compare it with the type of 

 that species which unfortunately is not described, Sir William 

 Macleay's notice of it being merely an indication of some 

 differences between it and Castelnau's species Meonis ater and 

 niger. 



Genus Cyclothoijax. 



I believe Dr. Sharp has placed Cyclothorax in the tribe 

 I'eronirii, but it is evident this is not its true position, which 

 cannot be far from Amblyte'^is or from the Australian Carabida- 

 which Count de Castelnan has referred to the genus Drhnostoma. 

 In the present system of arranging the Carabidce the mandibles 

 with a seta in the anterior part of the scrobe will exclude it 

 from the Feronini, while the margin of the elytra interrupted 

 posteriorly and with an internal plica will prevent its coming 

 into the tribe Poyonini, to which it has an affinity. I am not 

 sure that it can be admitted into any of the recognised tribes of 

 the Carahidce. 



Table of the Species of C'l/cluthorax known to 7ne. 



I. Disc of prothorax smooth, witliout punctures except near Ijasal 

 margin. 



A. Prothorax short, strongly i-ounded on sides, with a wide 

 lateral border. 



Elytra black C. ainbiguus, Ericlis. * 



* A species of Cyclothorax \% found everywhere in south-eastern Australia 

 (X.S.W. and V^ictoi-ia) where I have collected, and is also reported by tlie 

 Rev. Thos. Blackburn to occur generally in South Australia [vide 

 P.L.S.N.S.W. 1891 (2), vi. p. 481). It is subject to considerable variety 

 in size, in the character of the puncturation of the elytral stride, and in the 

 depth of the black colour of the upper surface ; I believe it to be identical 

 with C. amhirjims, Erichs., and that C. lophoide», Chaud., is also founded 

 on it. I do not feel confident that C. punctipemm, Macl., is a distinct 

 species from C. amhif/mis, though it is quite likely that it is. 



