4 CONCHASPIS ANGRJ3CI. 



inserted near the margin; tibio-tarsal joint obsolete, 

 but there is a constriction on the upper side towards 

 the claw, the latter being toothed on the inner margin 

 towards the base, from which arises a very minute hair ; 

 the tarsal digitules are represented by a slender hair ; 

 and there are a few similar hairs on the coxae. 

 Spiracles in three pairs, one immediately below the 

 insertion of each leg ; externally they are almost cir- 

 cular, with a crescent-shaped slit or opening. Last 

 five segments forming a pygidium (fig. 5), somewhat 

 resembling the pygidia in the Diaspinde, but each seg- 

 ment is represented by a broad chitinous plate, four of 

 which are bluntly pointed, and terminate at or near the 

 centrally-placed vaginal opening ; each plate bears two 

 or three large circular spinnerets. Terminal segment 

 (fig. 6) with a broad, terminal, highly chitinised, pro- 

 jecting process, centrally extended into the form of a 

 pair of flat, lobe-like processes, immediately anterior 

 to which is a short spine; there is also another similar 

 spine towards the centre, and a much longer one 

 towards the termination of the process. Immediately 

 anterior to the central lobes is a minute spine-bearing 

 lobe resembling those in the Dactylopiinde. 



Long, 1 mm. 



Larva resembling the female, but short and ovate, 

 and the antennae (fig. 10) are six- jointed, of which the 

 last two are the longest; the fifth bears one rather 

 long hair, and the sixth two or three. Formula 5, 6, 

 1 (2, 3, 4). Legs with the tibio-tarsal joint (fig. 9) 

 obsolete as in the adult female ; digitules to claw and 

 tarsi simple. Rostrum biarticulate and very broad at 

 the base. Terminal segments with chitinous plates. 



Habitat. On freshly-imported plants of Rodriguezia 

 secunda from Trinidad, at Eaton Hall, Chester, the 

 seat of His Grace the Duke of Westminster. The 

 first batch of insects was sent to me on a leaf of the 

 food-plant by the late Mr. Charles Hand, the orchid 

 grower, in December, 1889. In the following January 

 I obtained a second supply from the same source, 



