308 



4. Asterohcanium urichi, n.sp. On palms, Port-of-Spain, 

 (Urich). Scale slightly over 1 niin. long, elongate-oval, 

 shiny, brovv^nish, more or less translucent, with an 

 obscure median longitudinal ridge ; fringe short, 

 reddish ; surface of scale pitted. 



Fringe consisting of numerous parallel straight rods 

 which curl at their ends. 



Seen by transmitted light, the scale appears transparent, 

 and the pits or depressions (which are large and numer- 

 ous) pale lilac. This is of course not due to pigment ; 

 the same effect is observed in A. miliaris. The animal 

 itself is pale yellow, turning orange in caustic soda. 

 This colour-change to a sort of apricot colour is very 

 well marked, and is observed also in A. niUiaris. The 

 structural characters are orrlinary, but the mouth parts 

 seem rather more elongate tlian usual in the genus. 

 Easily distinguished from A. ■pfdiace, which is much 

 narrower in pi'oportion to its length, and bright lemon 

 yellow in colour. From ^1. miliaris it is distinguished 

 by the shape, and the rounded (not narrowed as in 

 miliaris) end of the scale. 

 16. Inglisia vitrea, n.sp. On Acacia sp., Port-of-Spain (Urich). 

 3 mm. long, 1| wide, oval, moderately convex. Glassy 

 scale white, with a conspicuous median longitudinal 

 ridge ; posterior cleft large, about one-third total length 

 of scale. Surface of scale strongly but linely striate i-adi- 

 ately on sides ; the apparent striations, highly magni- 

 fied; resolve themselves into rov/s of small dots (air 

 cells 1). The dorsal portion of this scale is divided into 

 testudinoid plates ; there are apparently six serioi? 

 of such plates, three along each side, but the two 

 middle series are the sides of a single median row, 

 divided only by the keel or ridge. Beyond these the 

 })road margin is not divided into plates. 

 The plates are concentrically striate, with a gra,nuiar 

 patch in the middle of each. The median row of plates 

 consists of two large dorsal ones, and two smaller 

 posterior ones. The second row consists of three plates 

 on each side, and the third row of seven on each side. 

 Margin with a fringe of rods at rather distant intervals. 

 The subtransparent scale removed leaves the insect 

 shiny red-brown, looking like a Lecanium. Derm with 

 large gland-pits near the margin ; margin with simple 

 spines, varying in size. Anal plates with their outer 

 sides subequal. In two specimens carefully examined 

 (adults) .1 failed to find any trace cf legs or 



