204 PERCY SLADEN TRUST EXPEDITION. 
60. Mytilaspis greeni, de Charmoy. 
Mauritius. 
61. Mytilaspis hibisci, de Charmoy. 
Mauritius. 
62. tiytilaspis aurticulata, sp. nov. 
On “ Croton,” Seychelles. 
The following new species are here formally described for the first time, and a note is 
added on the relationship of Lec. tessellatum, subtessellatum, and perforatum. 
Pulvinaria antigoni, sp. nov. (Plate 21. figs. 1-3.) 
Ovisac white; apparently similar to that of P. psidi/, but the specimens are crushed 
and the ovisacs flattened. 
Dried female ochreous brown; flattish; wrinkled. Antenna either 7- or 8-jointed 
(figs. 1, 2), the two forms occurring in equal numbers. In the 7-jointed form the 
division between the 6th and 7th is often very indistinct, giving the appearance of a 
6-jointed antenna. The 3rd joint is in every case the longest; the 2nd and apical are 
equal and next longest. In the 7-jointed form, the formula (excluding Ist joint, which 
is always much distorted by pressure) is 3, (2, 7), (4, 5, 6)—(fig. 2). In the 8-jointed 
form, it is 3, (2, 8), (4, 5), (6, 7)—(fig. 1). Legs normal; claw strong and curved; tarsal 
digitules long knobbed hairs; ungual digitules broadly dilated, extending far beyond 
tip of claw. Valves of anal operculum broad; roundly pointed at apex; base about 
equal to outer edge. Derm-cells obsolete. Marginal hairs not dilated, but slightly 
frayed at tips. Length 1-75 to 2:0 mm.; breadth 1:25 to 1:50 mm. 
Male puparium glassy; hyaline; slightly rugose ; median dorsal area elevated, with 
some glassy tubercles along median line; divided into 7 plates only (fig. 3). Length 
1:50 mm. 
On Antigonon, Seychelles. Coll. R. Dupont. 
Very near P. psidit, but distinguished by the undilated marginal hairs and absence 
of dermal cells. 
Ceroplastes tenuitectus, sp. nov. (Plate 21. figs. 4-8.) 
Adult female (fig. 4) hemispherical; thinly coated with transparent wax, through 
which the pale ochreous body of the insect is plainly visible. The waxy test thicker and 
slightly recurved on the marginal area. There is a small median dorsal pad of opaque 
white wax, and similar patches on the anal operculum, at the stigmatic areas and at 
intervals just within the margin. Cephalic lobe densely chitinous and pierced below by 
numerous small circular translucent pores. Antenna (figs. 5, 6) 6- or 7-jointed, the 
former condition being the more common. The 7-jointed form is brought about by the 
division of the long 38rd joint. The terminal is equal in length to the 2nd joint. Legs 
normal; tarsus a little shorter than tibia; ungual digitules broadly dilated ; tarsal 
digitules in the form of stout knobbed hairs, extending considerably beyond the unguals. 
Margin with fine simple hairs, replaced on the stigmatic areas by stout conical spines, 
