( iii ) 



uumber of geographical forms. All these geographical races 

 of paradoxa differ from each other a little in the genitalia. 



In the same countries and even in the same localities as P. 

 paradoxa, there flies the much rarer P. caunus, the well-known 

 mimic of Euploea rhadamanthus. This P. catmius is in structure 

 exactly the same as P. paradoxa, the various geographical 

 races showing the same minute differences as the races of 

 paradoxa. What conclusion have we to draw from this state- 

 ment of facts 1 We think, only one interpretation is admissible. 

 If P. clytia and dissimilis are one species, P. p)(^^'0'doxa and 

 caumis also are forms of one species only. 



Mimicry of Oriental Cockroach and Beetle. — Mr. 0. 

 E. Janson showed a cockroach and a beetle from Celebes, 

 exhibiting a remarkable case of mimiciy. The first was 

 apparently an undescribed species of Prasoplecta, or an allied 

 genus ; and the latter he had identified as Goelophora formosa, 

 Crotch. 



Mr. G. A. K. Marshall pointed out the notable similarity 

 of structural detail as well as of the general scheme of colour 

 and marking. 



Mr. C. O. Waterhousb remarked that many Blattidae were 

 good mimics of the Coccinellidae. 



Attack by Earwig on Agrotis vestigialis, Eott. — Mr. W. 

 Parkinson Curtis sent for exhibition two specimens, a $ and 

 5 of Agrotis vestigialis, Rott., obtained August 19th, 1908, at 

 Studland, Purbeck, Dorset. When working the sandhills he 

 saw the dead $ apparently sitting on the grass, and then 

 noticed that she had a part of the c^ genitalia attached to her. 

 He then found the i^, which a common earwig was busily 

 engaged in devouring. The earwig seemed in no wise anxious 

 to relinquish its prey, but as the ^ was lifted, it dived into the 

 herbage and he failed to capture it. The $ was quite freshly 

 killed, and so was the $, in fact the rigor of the muscles had 

 not set in. The earwig had evidently found the pair in copuld, 

 and had seized the $ by the head, the insect in its frantic 

 struggles having apparently torn away the genital valves and 

 partially eviscerated itself, so far injuring the J internally as 

 to cause death. The earwig had then eaten the maxillary 

 appendages and the greater part of the head of the ^, and was 



A 2 



