76 



Bublinear, nearly equal to each other; 6-8 ovate, nearly equal to each other; 



!) like the preceding in form, but larger ; Id much larger than the ninth, sub- 



rotundate and incrassated : 11 obtusely conical, equally incrassate, but longer 



than the ninth ; the two last form a moniliform club, and arc ornamented with 



very short verticillated setae. 

 Parts q) tin month not examined. 

 Thorax short, transverse, slightly contracted towards the base, posterior angles not 



produced. 

 Srnti lliuii rather small, triangular. 

 Elytra oblong, truncate. 

 Wings lanceolate, seen through the elytra. 

 Abdomen long, rather obtuse, with four segments exposed, apical segment obtuse; 



in other respects not examined. 

 Prothorax (PI. Kill. B, fig. 2, a) with the prosternum large; episterna small, but 



evident; epimera moderate, enclosing the coxal cavities; coxal cavities large, 



ovate, oblique, and contingent. 

 Mesostmiiuit i PI. XIII. B, lig 2, d) moderate, with a short carina ; episterna mode- 

 rate, oblong; epimera large, humeral, broadly extending to the coxal cavities; 



coxal cavities rounded and contingent. 

 Metasternwm (PI. XIII. B, fig. 2, g) large, subquadrate, extending to the sides of 



the body, wit li the posterior margin between the coxse straight; episterna and 



epimera entirely covered by the elytra. 

 Venter composed of six segments of equal length, apical segment faintly emarginate. 

 Legs rather short and rather stout, anterior with the trochanters small, trigonal; 



femora simple ; tibiae faintly dilated ; tarsi short, three-jointed ; 1 rather long; 



2 much smaller than the first ; 3 long and slender ; claws slender and faintly 



curved. 

 intermediate (PI. XIII. B, fig. 8) like the anterior, but rather longer. 

 posterior with the trochanters claviform, in other respects like the anterior, but 



with the tibiiB more dilated. 

 Coxa anterior large, ovate, contingent. 



intermediate moderate, rounded, contingent. 



posterior rather large, prominent, ovally and broadly laminated on the whole 



outer margin, and rather widely distant. 



It is difficult to determine the proper position of this genus : in the form of its 

 antenme it resembles l'tilium more than any of the present tribe ; in its short 

 transparent elytra and long abdomen it is like PHneUa ; but the short and broad 

 Bhape of its head and thorax, together with the comparative shortness of its legs 

 and antennae, incline me to place it next in succession to Nephanes. 



As the genus is at present only represented by a single individual, I have not 

 ventured to dissect the parts of its mouth ; although in such minute insects these 

 organs must not be regarded as of primary importance, yet they often afford 

 collateral evidence of affinity. 



Ptiliodes Blackburni. 



P. Blackbwrni, Matthews, Cist. Ent. iii. p. 41, pi. ii. fig. 3, 1882. 



L. c. xc hu. 063 mm. — Elougato-oblongus, sat depressus, hand nitidus, 

 castaneus, pilis brevibus aureis vestitus ; capite permagno, lato, prominenti, con- 

 fertissime tuberculato sive alutaceo ; oculis modicis, haud prominentibus ; pronoto 

 capite parum latiori, vix longiori, pone medium latissimo, confertissime tuberculato 

 sive alutaceo, lateribus leviter rotundatis. margine basali recta, angulis fere rectis; 

 elyt/ris suboblongis, capite atque pronoto parum longioribus, baud latioribus, prope 



