11 



enorniously dilated, the pedicel about equal to the first or 

 second funicle joints, Avhich are subequal, the first being three 

 times as long as wide or rather more than this. There are four 

 distinct funicle joints and three club joints. There are prob- 

 ably two ring joints, these having the appearance of being 

 three. Lenelh 1.5 mm. 



Ilab. China, Shek Lung (Muir) ; eggs of cane Delphacid. 



(4) Ootetradichus hamllA sp. nov. 



Thorax metallic green, abdomen pale on about the basal half, 

 the a])ical |)art being dark and with metallic reflections. Legs 

 and antennae more or less sordid, and the head brown in balsam 

 preparation. Middle and hind coxae black or nearly so, and no 

 doubt metallic. Antennae of female with the first funicle joint 

 very long, about one and a half times the length of the elongate 

 second, and about five times as long as its own width near the 

 apex of the joint, third joint rather more than twice as long as 

 wide ; club nearly equal in length to the two preceding joints 

 together. Thorax microscopically longitudinally rugulose ; the 

 abdomen elongate, as long or longer than the head and thorax 

 together. 



Male with the thorax wholly dark and metallic, the hind coxae 

 conspicuously so, except at the apices, which are pallid. The 

 abdomen is pale yellow or whitish basally, black or dark and 

 metallic on the apical segments. The antennae have nine dis- 

 tinct joints, scape, pedicel, four funicle joints and a tJiree 

 jointed club, in addition to two or three ring joints. The scape 

 is ovate and of enormous size, being greatly dilated, the first 

 and second funicle joints are elongate, slender and subequal, 

 the two following are more robust, especially the fourth. The 

 marginal vein is normal, not noticeably thickened. 



I have examined one female and three males of this species. 

 The latter are mostly more or less discolored. They appear to 

 closely resemble the female in color, but the abdomen is per- 

 haps more extensively pallid. Length .8 — 1.5 mm. 



Hab. Java, Pekalongan (Muir) ; from eggs of cane Del- 

 phacid. 



