GENERAL MORPHOLOGY OF THE LEBBEIv SCALE. 13^ 



into long, viscous, elastic threads interwoven with a granular or mealy 

 secretion, which latter disperses in the form of a little cloud of white smoke. 



Length 3-5 mm.; rarely attaining a length of 7 mm. 



Female adult. Dorsum covered with a thick layer of white, rarely pale 

 bufF, secretion, which when examined under a microscope is seen to consist 

 of minute granular, and short curved hair-like, bodies. Colour, when com- 

 pletely denuded of the white secretion, black; integument smooth and 

 shining. Body fluids deep brownish purple. Form of the early adult, 

 ovate, tumid ; segmentation distinct. Older examples at the period of 

 parturition become much narrowed anteriorly, presenting a more or less 

 pyriform or cordate outline. Antennae short (fig. 10 «), of seven segments j 

 but the seventh segment has often a pseudo-articulation in the middle, 

 though in many individuals there is no visible indication of this ; there is a 

 large curved spine at the distal extremity of the sixth, and a similar spine in 

 the middle of the seventh or immediately below the pseudo-articulation, 

 Avhen the latter is present ; apex of last segment with several long spinose 

 hairs, of which at least one is much stouter than the rest ; hairs on remaining 

 segments short and slender. Legs (fig. 10 h) very short and stout, being but 

 a very little longer than the antennae. Derm rather thickly studded with 

 spinnerets, especially towards the anal extremity ; these are of three types : 

 a small circular form with long subcutaneous tubes (fig. 10 c) ; an irregular 

 form (fig. 10 <i) ; and a large circular form (fig. 10^), also without sub- 

 cutaneous tubes. Anal lobes and anal orifice normal. Mentum large, 

 biarticulate, apex with many spinose hairs. Abdominal and thoracic 

 " cicatrices " absent. Stigmata large, equal in length to the trochanters. 



Length 2-50-4-75 mm.; width 2-3*75 mm. 



Ovisac of male. This is formed of loose flocculent material. 



Male. Slightly mealy or farinose. General colour dark brown with a 

 tinge of red or purple. Head dull ochreous tinged with dusky brown. Eyes 

 and ocelli ruby-red with a dark centre. Legs ochreous, with darker shadings. 

 Wings and caudal filaments white. Some examples are of a generally darker 

 colour than others, a character possibly due to age. Antennae sparsely 

 spinose, the spines being long and slender ; there are also a few com- 

 paratively short hairs, but these are scattered and occur at much wider 

 intervals than the spines. Legs spinose, the spines slender ; but there are 

 two at the distal extremity of the tibiae which are longer and stouter than 

 the rest. Ocelli two in number ; these are placed on the lateral margin of 

 the head. 



Wing expanse 2*4 mm. Length of body 1*3 mm. 



Pupa. Slightly farinose. Brown tinged with purplish red ; wing-cases, 

 antennae and legs translucent, and almost glassy in appearance. Some 

 examples have a white caudal mass of secretionary matter, equal to one half 

 of the length of the body. It is active or at least capable of locomotion ; 



n2 



