ORIENTAL CICADIDM. 49 



discal piceous spot near base. Head beneath with the anterior margin black and a central piceous spot 

 near apex of face. Opercula ocbraceous, with apices and inner margins broadly black ; apex of abdomen 

 beneath l)lack. 



Tegmina and wings pale hyaline, the venation more or less fuscous ; tegmina with the costal 

 membrane castaneous, the transverse veins at the bases of the second and third apical areas infuscated. 



The face is convex, with a central longitudinal incision, which neither reaches base nor apex. The 

 opercula are long and broad, concavely sinuated on their outer margins near base, and with their apices 

 obtusely rounded and about reaching the apical abdominal segment. Rostrum mutilated. 



Long. excl. tegm. 35 millim. Exp. tegm. 10-2 millim. 



Ilah. — Malayan Archipelago : Borneo, Pontianak (Bruss. Mus.) ; South-East District (Doherty — 

 coll. Dist.). 



C. lauta and C. latilinea are very closely allied, and they are evidently local races of one 

 sjiecies. The principal and most constant colour differences are found on the opercula, which 

 in C. latilinea are much more hroadly suffused with black than in G. lauta.* 



11. Cosmopsaltria montivaga. (Tab. XII., fig. 12, a, h.) 



Cusmopsaltria montivaija. Distant, Auu. & Mag. Nat. Hist. ser. G, vol. iii. p. 421 (1889). 



Allied to C. lauta, Dist., but differing by its larger size, broader and more robust body, the absence 

 of the sublateral fascia to the pronotum, and the presence of an oblique black pronotal spot behind the 

 eyes ; the markings of the mesonotum are smaller, and the sublateral fascia curved and not extending to 

 the anterior margin. 



Opercula broader at base, less concave internally, much more narrowly black at apex and inner 

 margin, and crossed at centre by a transverse dark castaneous fascia. 



Long. 40 millim. Exp. tegm. 120 millim. 



Hab. — Malayan Archipelago : Borneo, Kina Balu Mt. (Whitehead — coll. Dist.). 



This species (at present) is only known to the writer by a single male specimen collected 

 on the Kina Balu Mountain. It is probable, however, that it will 1)0 found to have a much 

 less restricted habitat, f 



12. Cosmopsaltria inermis. (Tab. VI., fig. 15, a, h.) 



C. { Cosmo jisultriii) inermis, Stal, Oiv. Vet.-Ak. Forb. 1870, p. 708, u. 3. 



Through the kindness of Dr. Aurivillius, of the Stockholm Museum, I am eual)led to 

 figure a typical specimen of Stal's species, and I therefore append a copy of the original 

 description : — 



" Pallide olivaceo-flavescens vel viresecns ; macula irregulari ocellos mcludente, macula angulorum 

 iuteriorum jugorum, fasciola obli<iua leviter curvata ad margiuem anticum jugorum prope oculos 



'■■■ The Dmuhtbia ditariim. Walk. (Journ. Linn. Soc, Zool., vol. i. p. 141 : 1857), recorded from Borneo, appears to be 

 also closely allied to these two species or races, excepting that the opercula are recorded as " extending to the tip of the 

 abdomen." This, however, is oul.v a matter of conjecture, as the type is not in the collection of the British Museum. As 

 many of these specimens belonged to the late Mr. W. Wilson Saunders, I applied to his son for assistance ; but he informed 

 me that all his father's Homoptera went to the British Museum, and that he knew of nowhere else to look for them. I also 

 sought help from Trof. Westwood ; but he wrote to nic that the Hope Museum at Oxford possessed no types or other individuals 

 of Walkers species described from Malacca iind Borneo. We must therefore treat this species as not existent. Dr. Still 

 ('Journal of Entomology,' vol. i. p. 4771 proposed that all Walker's Catalogues should be considered as non-existent; but, 

 apart from the (juality "of Walker's entomological work, which no one can altogether either praise or defend, 1 have always 

 concluded that where his types exist, his species arc recognisable, but where they cannot be found his species should be ignored. 

 The D. thiarum. Walk., therefore to the writer is an unrecognisable species. 



f A very curious distribution was obsened in another species of the Homopterous family Cercopida contained in this 

 collection. In" the year 1878 I described from a single specimen collected at Taoo, in Tenasserim, at an elevation between 

 3000 and 0000 ft., a very extraordinary species of Cosmoacarta (C. masoni, Dist.). From that time to the year 188"J I never 

 saw another specimen imtil 1 observed a second sohtary example in the collection made on the Kina Balu Mountain in 

 Borneo by Mr. Whitehead. 







