DISTANT— RHYNCHOT A. PART II: SUBORDER HOMOPTERA 287 



162. Parakosalya insularis, sp. n. 



Head, pronotum, mesouotum, base of abdomen, body beneath and legs ochraceous ; 

 abdomen above, excluding base, sanguineous ; 



tegmina creamy-ochraceous, the costal mem- ^..-sKr?!^ 



brane much paler ; wings pale fuliginous ; ^^^^^^^^^m^^ -<>«"S*''^^ 



vertex with two small black impressions ^^^^SSl^^ 



between the eyes ; abdomen above with a ^^P r- -t 



distinct central ridge ; other structural charac- ■ — j u "^ \ j{'W~ 



ters as in generic diagnosis. ft ^^p' 



Long. excl. tegm. 3 mm. Exp. tegm. 8 mm. 



Fig. 2. Parakosalya insularis Dist. 



Loc. Seychelles. Silhouette : forest above 

 Mare aux Cochons. 



t 



Subfamily Derbinae. 



Of the six genera here enumerated four appear to be unknown and are here 

 described. There can be no doubt that, as has been remarked by other workers, 

 the Derbinse are closely related to the Cixiinse, and in some instances it is difficult 

 to draw the line between the two groups or subfamilies. Those described here are 

 all small species for which we are indebted to the assiduous collecting of Mr Hugh Scott 

 and will in all probability be again discovered, either generically or specifically in 

 Madagascar and the adjacent islands. 



Iguvium, gen. nov. 



Vertex of head narrow, prominently projecting before the eyes, widened towards 

 base, with eyes very much narrower than pronotum ; antennse with the second joint 

 of moderate length but strongly incrassate ; face narrow, the margins ridged, strongly 

 projecting before eyes ; clypeus short and broad, shorter than face ; pronotum short 

 and broad, the anterior margin sinuate, the lateral angles subacute, posterior margin 

 moderately concavely sinuate ; mesonotum about as long as pronotum and head 

 together, moderately narrowed posteriorly ; tegmina more than twice as long as 

 broad, narrow at base, inner margin gradually arched from base to about middle where 

 the tegmen is roundly broadened, costal membrane with three transverse veins, 

 remaining venation better seen in the enlarged figure here given; wings short and 

 narrow. 



Two carded specimens afford small opportunity for detailed structural charac- 

 teristics. 



The genus is allied to Pamendanga Dist. 



163. Iguvium alhomaculatum sp. n. (Plate 51, fig- 5 a). 



Body and legs ochraceous with darker mottlings ; eyes black ; pronotum with 

 two central and two sublateral fuscous spots; mesonotum with similar anterior spots 

 and two larger dark castaneous posterior spots ; tegmina subhyaline, the venation 



