20 ConchaspincB. 



united into a piece somewhat resembling the pygidium of the 

 DiaspincB. 



In the three species at present recognised there appears to 

 be no tibiotarsal articulation, and I am incHned to think that this 

 character will prove of generic importance. It is true that Mr. 

 Newstead, in his description of C. rodrigiiesice, says : — ' Tibiae 

 grooved, about as long again as the tarsi;' but that author 

 informs me that the supposed articulation proves to be little 

 more than a marginal indentation. This fused condition of the 

 tibia and tarsus is very marked in both sexes of C. socialis from 

 Ceylon ; it also holds good with C. angrceci, Ckll. from America. 

 The male is known only from the Ceylon species. The pupa 

 is contained in an oblong felted sac of firm consistency. The 

 adult male has four ocelli, the antennae bear several knobbed 

 hairs at the apex, the genital spike is long, slender, and pointed. 

 The tibia and tarsus are fused together as in the female. 



The larvae (as known from C. rodrigiiesice) appear to differ but 

 slightly from the adult female, the principal difference being in 

 the greater number of joints in the antenncC. The eggs are 

 proportionately large. 



It is difficult to assign this genus to any of the recognised 

 sub-families. More material is wanted, and other species must 

 be studied before a decision would be warranted. It seems to 

 be widely separated from any of the known genera. The scale, 

 though superficially Diaspid in appearance, is without the cast 

 larval skins (pellicles) that enter into the construction of the 

 puparia of all the members of that sub-family. The two-jointed 

 mentum points to some affinity with the CoccmcB, and there this 

 genus may perhaps eventually find a resting-place ; but, pending 

 further light on the subject, the genus is here provisionally 

 isolated by placing it at the commencement of the list, before 

 the DiaspincE. 



CoNCHASPis Socialis, sp. nov. 



(Plates III. and IIIa.) 



Female puparium comparatively large; circular; rounded or 

 bluntly conical above {fig. lo); firm, opaque, and closely felted; 

 outer surface greyish or greyish brown {fig 8); inner surface 

 white and smooth {fig. 9). The ventral scale is represented 



