THE ENTOMOLOGIST. 



No. XV. 



JANUARY, MDCCCXLIl. 



Price 6d. 



Art. LIX. — Analytical Notice of the Si-d Number of ^Arcana 

 Entomologica^^ or Illustrations of New, Rare, and Interesting 

 Exotic Insects.'* By J. O. Westwood, Esq., F.L.S., Sec. of the 

 Entomological Society, Etc. Etc. Published September, 1841. 

 London: William Smith, 113, Fleet Street. 



Plate IX. represents an Orthopterous insect closely allied to Man- 

 tis, more particularly that section called by Serville Chaeradodis, and 

 figured by Guerin, ' Mag. de Zool.' Ins. pi. 34; and ' Voyage de I'As- 

 trolube,' p. 69. Mr. Westwood gives it the new name of Deroplatys, 

 considering two small foliolets at the extremities of the metafemora 

 of the species he has figured, sufficient to justify the establishment of 

 a new genus. The species enumerated are — 



1. Deroplatys desiccata. Brown : the pro thorax furnished with a 

 slender dilated membranous margin, which is deeply notched on each 

 side posteriorly : fore wings short and broad, with a large white black- 

 pupilled ocellus beneath, near the apex : length 3 inches, expansion of 

 wings 34 inches. Inhabits Malacca : in Mr. Hope's cabinet. Figu- 

 red in Jardine's 'Naturalist's Library,' "Insects," Int. pi. 9. ('Arc. 

 Ent.' i. 33). 



2. Deroplatys lohata. Chaeradodis lobata, Guerin, 1. c. 



3. Deroplatys angustata. Elongate, brown, fore wings darker, with 

 a minute, pale, subcostal spot : prothorax rhombiform, with rounded 

 angles and subsinuate margins ; legs variously marked with black : 

 length 2 inches. Inhabits Java : in the cabinet of the East India 

 Company. (Id. i. 34, tab. ix. fig. 2). 



4. Deroplatys arida. Fusco-ferruginous, the prothorax narrower 

 posteriorly : the fore wings have six large black spots in a longitudi- 

 nal series ; the hind wings have one very large, basal, black, shining 

 blotch : legs variegated with black and brown : length 2^ inches, ex- 

 pansion of the wings 5 inches. Inhabits Sumatra : in the cabinets of 

 the Entomological Club and Mr. Fortunum. (Id. i. 34, tab. ix. fig. 1). 

 Plate X. represents that remarkable insect Hypocephalus armatus, 



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