208 I August, 



margin all rounrl, and anteriorly has an orifice for tlic extrusion of the rostrum. 

 The insect Avhen first restored was purplish-bi-own in colour ; when alive it had 

 doubtless filled the scale, but in its dry state it was entirely shrivelled, and lay in 

 the anterior region, the rest of the scale was more or less occupied by withered 

 larvae. Antenna? nearly cylindrical, of eight joints (fig. lb), the relative length of 

 them not verj constant, the 5th sometimes not so long as represented, and the 8th 

 much smaller; all are hairless except the last, which has three strong curved hairs 

 on the apex, in a few specimens there were but six or seven joints only (figs. Ibb), 

 the result, probably, of parasitism of the insect. Eyes small, inconspicuous. Kos- 

 trum large, filaments very long. On the under-side (fig. la), the body has, on the 

 abdomen, two rows of five perforated discs (fig. Ic), and, anteriorly, three similar 

 ones in a triangle. The deep emargination of the last segment results in a wide 

 lateral lobe on each side, terminated by a strong hair, and bearing several long, 

 tubular spinnerets, with orifices shaped like deer's feet (fig. Id), and also, near the 

 margin, some blunt spines (fig. le). Anal ring large, with ten hairs, above it is a 

 dark chitinous arch or loop, which in some specimens appears detached, but is really 

 a part of the segment (figs. If and Ig). 



Length of scale, 3 — 3'5 mm. ; breadth, 25 mm. 



S adult. Scale (fig. 2) of the same pattern as the ? (not thin and glossy, as 

 in Lecanium), but the raised lines are stronger, and, posteriorly, without interruption 

 of the pattern, the upper-side is developed in the form of an ovoid plate, which is 

 free, except at its broad flexile base, evidently to permit the escape of the imago. 

 The imago is too much dislocated to represent entire, the buccal ocelli are large. 

 Antennee (fig. 2a) of ten joints, thickly set with short, curved hairs, and three at the 

 apex slightly clubbed. Wings ordinary ; halteres (fig. 2b) terminated by a single 

 curved hair. Legs ordinary. Fig. 2c represents the anal segment and genital arma- 

 ture. Length of scale, 2 mm. 



Larva. Antennae of six joints, with long hairs (fig. 3). The bodies were so 

 broken that they could not be restored or figured. 



In October, 1891, Mr. S. J. Mclntire sent, as just received from 

 Mr. Jenman, Superinteiuleiit of the Botanic Garden, George Town, 

 Demerara, some pieces of the stems of Dendrohium calceolaria, to 

 which several of these Coccids, dead and dry, were tightly adherent. 

 Prima facie they had the appearance of Lecanium, but this was decep- 

 tive, for on examination they proved to have such complex characters, 

 that they would not enter any indicated genus, and for the same 

 reason their relationship and position in any group of Coccidce are not 

 at present possible for me to assign. The J scales were mostly empty, 

 but in a few a dead imago, fully developed, remained. 



The first lot of $ scales treated in the ordinary way, by boiling 

 in solution of caustic potash, were entirely dissolved, showing that 

 they w^ere wholly cereous. Subsequent experiments with other scales, 

 nnder the careful manipulation of Mr. Newstead, gave the very 

 singular results above stated, w^hich were constant in the manv ex- 



