OlilEX TAL CJr.il 111 >/E. 14 • 



Genus PKASIA. 



Priisid, Still, Trans. Ent. Soc. Lond. ser. 3, vol. i. p. 57-1 (1803). 



As all the specimens of this genus in my own collection are of the female sex, and bials 

 description was founded on female specimens in the British Museum, I have thought it hest to 

 give the original generic diagnosis. 



"Caput parvuin, thoracis antico hand latins, vertice aiif^usto; fronte compressa, Talde prominentc, 

 basin versus angustata. Antennarum articulus primus elongatus. Thorax postice quam antice latior, 

 margine antico utiinKiuo Icviter elevate, subrecto, limbo postico angusto, angulis basalibus retrorsum leviter 

 produetis. Tegmina vix margiuata, areolis apicalibus octo, veuis ulnaribus basi distautibus, anastomosibus 

 duabus exterioribus opposite oblicjuis. Alse angustissime marginatje, areolis niMcalibus sex." 



" Cystosomati* affine genus." 



To the above description may be added the male characteristic of having the abdomen 

 considerably dilated. 



Prasia is a genus, according to present knowledge, quite confined to the Malayan 

 Archipelago. Its species are rare in collections, and those of the male sex are particularly 

 scarce. 



1. Prasia faticina. (Tab. VII., figs. 14, ,,, h.) 



Prasiii faticiita, Still, Tr;ius. Eiit. Soc. Lond. ser. 3, vol. i. p. 574 (18G3). 



" Pallidissime subolivaceo-flavescens ; tegminibus alisque sordide hyaliuis, illorum margine costali 

 ultra medium albido ; thorace antrorsum sensim angustato. ? ." 



Long. 28, exp. tegm. 80 mill. 



" Vertex oculo transverse nonuihil latior. Ocelli postici inter se et ab oculis aeque longe distantes. 

 Thorax ab apice retrorsum sensim ampliatus, postice quam antice circitcr duplo latior, marginibus 

 lateralibus, rugte crassiusculai instar, prominulis. Tegmina abdomine duplo longiora, areis apicalibus 

 quarta, quinta, sexta et septima longissimis, tertia prima et octava nonnibil longiore, secunda omnium 

 brevissima, area basali interna apice sat acuta. Femora antica subtus trispinosa, spina subapicali 

 minutissima, subbasali nutante, reliquis majore." 



Hab.— Malayan Archipelago: Celebes (Brit. Mus. ; Beecari— Genoa Mus.). 



The female type in the British Museum, and another Celebesiau specimen of the same sex 

 belonging to the Genoa Museum, constitute my sole knowledge of this species. 



2. Prasia princeps. (Tab. Xlll., figs. 14, a, h.) 



Prasia princeiis, Distaut, Ann. & Mag. Nat. Hist. ser. 6, vol. ii. p. 825 (188Si. 



$ . Pale olivaceous-green. Head with the eyes and the apex of the front infuscatid; the ocelli and 

 the lateral margins of the pronotum more or less oehraceous ; anterior tiliia; and tarsi brownish. 



Tegmina very pale oehraceous or olivaceous and subhyaline ; the costal membrane and the venation 

 oehraceous. Vings pale hyaline. 



Long. excl. tegm. S , 28 millim. Exp. ttgm. yO millim. 



* Cystoaoma is an Australian genus, in which the abdomen of the male ses is much inflated. 



