82 Mr. J. W. Douglas on a neiv species 



Fern. Atra. Corpore supra laminis cereis albis instructo (in hoc 

 exemplo fortuito fere abruptis) ; antennis brevibus, 9 articulatis, 

 nigris ; marsupio niveo, supra canaliculato, infra valde convexo, 

 levigato, leviter striate ; pedibus nigris. Long, cum marsupio 

 lUn. 



Hab. in insula Montecristo (olim Maenaria) in Erica 

 arhorea. 



$ . Black. Head small, transverse, anteriorly narrow and in- 

 curved, posteriorly witli three distinct oceUi ; eyes large, anterior, 

 prominent ; antennae pitchy black, very long, the 1st and 2nd joints 

 short, thick, sparingly setose, the remainder filiform, long, sub- 

 equal, finely setulose. Pronotum large, subquadrate, anterior 

 angles depressed, surface divided into four elevated convex portions. 

 Scutellum large. Wings of the generic form, — very long, except 

 at the base very broad, posteriorly broadly rounded, — transparent, 

 smoky grey, farinose ; the furcate uervure fuscoiis. Halteres 

 small, sinuate, black, the obtuse apex with two recurved setae.* 

 Abdomen short ; from the upper surface of the last true abdominal 

 segment projects a very long pencil of slender white setae, beneath 

 which the genital segments lie free. Legs pitchy black, setulose. 



5 . Black ; above clothed with snow-white, cereous laminations 

 (in the specimen before me nearly all these have been rubbed off, 

 only two or three anterior and two posterior ones remaining, the 

 latter overlapping the base of the marsupium). Antennae short, 

 stout, 9-jointed, the apical joint setigerous.f Marsixpium snow- 

 white, above as long as the visible part of the body, canahculate ; 

 beneath arismg at the posterior coxae and entirely covering the 

 abdomen, very convex, and posteriorly curved upwards, like the 

 stern of a ship, smooth, finely striate. Legs black, finely setulose. 



* Burmeister, among the generic characters of the male Dor- 

 thesia, merely gives briefly " kurzen blattformigen Schwingen " 

 (Haudb. ii. 76). Amyotand Serville do not denote the presence of 

 halteres in the male of this genus, and, although Prof. Westwood 

 does notice them (Introd. Mod. Class. Ins., ii., p. 445), he does not 

 indicate them in his figiu'e (Froutisp., fig. 8). In his ' Essai sur les 

 Cochinelles ' Dr. Signoret does not mention halteres among the 

 characters assigned to the male of the genus Orthezia, but, in the 

 introductory remarks on the Coccidcs generally, he says (p. 32), 

 after describing the fore wings ("les elytres"), "En dessous on 

 observe deux balanciers plus ou moins longs et plus ou moins 

 larges, paraissent articules et finissant generalement par tme soie 

 en forme de crochet." The "balanciers" are represented in the 

 figures of species of several genera. 



■)■ The antennae of the adult female of Orthezia urticce are 

 reported by all authors as having only eight joints, but in the 

 present si^ecies there are certainly nine, as shown in figs. 4, 4 a, 

 and 0. 



