1890.] 



79 



NOTES ON SOME BRITISH AND EXOTIC COCCIDJE (No. 15). 

 BT J. W. DOUGLAS, F.E.S. 



CEOSSOTOSOMA, n. g. 



$ . Antennae of 11 joints. Ejes not facetted, oval, produced in the form of a sub- 

 conical truncate tube. Rostrum present. Body surrounded with a marginal fringe 

 of long opaque processes. Anal ring not evident. Legs simple. 



CeOSSOTOSOMA ^aXPTIACTJM, n. sp. 

 9 adult. Deep oi-ange, becoming black after death ; broad oval, slightly convex 



above. Head small, rounded in front. 

 Antennse (fig. 1) black, short, stout, 

 of 11 wide joints, with many pi-ojecting 

 pale hairs ; the first three cylindrical, 

 1st broadest, 3rd longest ; 4th to 10th 

 short, in length sub-equal, the sides 

 curved out from the wide base to the 

 rounded wider apex, the anterior mar- 

 gin of each with a pale ring ; 11th 

 much longer than the 3rd, sub-ovate, 

 the base small, the apex rounded, the 

 latter with many long hairs, two of 

 them especially very long. Eyes (fig. 

 2, profile and front) black, shining, not 

 facetted, projecting from a wide, oval 

 base in the form of a short, subcorneal, 

 truncate tube, of which one side is ir- 

 regular, being constricted near the 

 bass ; viewed in front the tube is trans- 

 lucent. Thoracic segments occupying 

 nearly half the length of the body, 

 strongly defined by incisions, those of 

 the abdomen less so, but all distinctly 

 marked. In the first stage of adultness 

 the whole smooth surface has a pellicle 

 of white waxen matter closely adherent, 

 but easily detached, and often more or 

 less rubbed off ; eventually, as the 

 ovisac is developed, exudation of waxen 



Fig. 2. 



Fig. 4. 



and cottony matter obscures the segmentation. At first there is a narrow, well- 

 defined marginal rim all round the body, afterwards there is a flattened area exterior 

 to this ; from just below it, on each side of the abdomen, is a projecting fringe of 

 7—8 distinct, contiguous, stout, sinuate, tapering, waxen, snow-white, opaque, fragile 

 processes, 3 — 5 mm. long, much curved round at the pointed ends, all, as a rule, 

 tending downwards. In one specimen, sheltered within a curved leaf, a similar, but 

 thicker, straighter, obtuse, upturned or horizontal appendage also proceeds from the 

 sides of each of the thoracic segments, and two from the head (fig. 3), the latter 



G i 



