246 Lecaniin^. 



LECANIUM (PARALECANIUM) MARITIMUM, sp. nov. 



(Plate XCIII.) 



Lee. planum, var. maritimum, Green, ' Catalogue of Coccidte,' Tnd. Mus. Notes, 

 Vol. IV. No. I (1896). 



Adult 9 {fig. 9) oval or irregularly deltoid, bluntly pointed in front, 

 broadly rounded behind ; flat above, or slightly convex after gestation ; 

 more or less distinct median longitudinal and two transverse ridges, with 

 lesser curved transverse and longitudinal ridges enclosing concentrically 

 marked thin scaly plates forming an indistinct tessellation. Surface glossy. 

 The whole dorsal surface coated with a colourless layer of secretion which, 

 during treatment with potash, swells into a tough covering which can be 

 peeled off, often in a single piece. Colour varying with age from pale 

 reddish or brownish yellow to deep chocolate-brown above ; a narrow sub- 

 marginal zone and broad median area usually darker ; a pale patch surrounding 

 anal scales. Surface minutely punctate. Ventral surface purplish in mature 

 examples. A shallow central cavity in which the larvae remain for a short 

 time {fig. 8). Eyes small, black, slightly prominent, at some distance from 

 margin. Margin {fig. 13) with a complete fringe of overlapping subcircular 

 fan-shaped hairs. The margin itself slightly crenulate, three to four crenu- 

 lations between each point of attachment of the hairs ; a dark cuneiform 

 mark crossing the middle of each crenulation {fig. 15). Stigmatic cleft 

 {fig. 14) small, wtth three blunt spines not reaching to margin ; the median 

 spine longest. Median area with minute circular, translucent pores, rather 

 widely separate. Epidermal cells of marginal zone larger and more crowded, 

 of irregular outline {fig. 13). Scales of anal operculum {fig. 12) narrow, 

 acutely pointed; outer edge longer than base. Antenna {fig. 10) with six 

 joints, of which the third is very long ; sixth next longest, as long as or 

 longer than the previous two together. Legs rather small ; tarsus equal 

 to tibia. Ano-genital ring apparently with six hairs. Length 2-50 mm. 

 Breadth 2 mm. 



Female of second stage very thin, transparent, and colourless. Young larva 

 oval, flat, with deep anal cleft and short caudal setae. 



Male puparium {fig. 7) glassy, colourless ; divided into eighteen plates, 

 of which three are central and fifteen marginal ; an indistinct median 

 ridge. Length i'5o mm. 



Adult <J {fig. 2) bright reddish brown, with three darker longitudinal 

 stripes. Wings hyaline ; costal nervure very pale pink. No caudal filaments. 

 On each side, at base of genital sheath, is a small setiferous tubercle(yf?-. 5). 

 Head pointed at apex, widened below {fig. 3) ; flattened or shghtly concave 

 in front {fig. 4). Eyes and ocelli black. Antenna ten-jointed, the terminal 

 joint with three longish knobbed hairs (^fig 6). Length i mm. 



