376 



ON MI.MK JtV AMONGST THE BLATTI l> ! . 



more than one third of the sutural margin. Wings very dark 

 fuscous. Abdomen, cerci, and legs dark blue with metallic 

 reflections, supra-ana] lamina trigonal, sub-genital lamina cleft 

 and valvular in appearance.; cerci very Long, with sparse erect 

 pube8cence 3 not acuminate. Formula of apical spines (i , -, '' r no 

 genicular spine mi front femora ; front tibiae with three apical 

 spines and one spine beneath, mill and hind tibiae with two 

 widely separated spines above, four apical spines and a double 

 row of spines beneal h. 



Total length 14 mm.; length of body 11 nun.; length of 

 tegmina 11*5 nun. ; pronotum 2'8 nun. x 3 mm. 



Ecuador. 



One example (Saunders collection, Oxford Museum). 



This gorgeous little cockroach is also very like a Telephorid, 

 but 1 have not been able to match it with any particular species. 



In the preparation of this paper 1 have been much indebted to 

 the kind assistance of my friend, Mr. ('•. -I. Arrow, who lias 

 diligently searched the rich collections of Coleoptera in the 

 British Museum for models to some of the remarkable mimetic 

 cockroaches described above. Mr. Arrow has also supervised the 

 preparation of the plate accompanying this paper. 



EXPLANATION OF PLATE XLVIII. 



I'ii;. 1. Megapyga eximia Boh. 



2. Prosoplecta bipunctata Br. 



3. Okies biplagiata .Lie. 



I. Prosoplecta trifaria Walk., £ . 



h. /'. <■<><■, -in, lla Sauss. 



6. P. nigra, sp. n. 



7. P. gutticollis Walk. 



8. Prioptera sinuata Oliv. 



;•. Prosoplecta nigroplagiata, sp.n. 



in. Oides biplagiata .Inc., var. 



11. Prosoplecta trifaria Walk., y. 



L2 /.' is dunlopi ( 'rotcli. 



13. J'rosoplccla st'injieri, .s]>. n. 



1 1. J', qiiadriplagiata Walk. 



15. P. minimi, Sp. II. 



]'!. J', rvfa Kirhy. 



17. Melyroidea mimetica, sp. n. 



Is. .1/. magnifica, sp. n. 



l'.i. Prosoplecta ccelophoroides, 



SJ>. n. 



20. Anisolemnia distaura Muls. 



21. Ccelophora formosa Crotch. 





