98 [October, 



fragifera from the Eoyal Botanic Society's Gardens ; and on Averrhoa 

 caramhola and Spathophyllum hlanduvi from the E-oyal Gardens, Kew ; 

 all in February. 



Leoanium rusciTM 



Eeaumur, Mem., iv, pi. v, fig. 2 (1740). 



Chermes quercus rotundus fusous, Geoffr., Hist. Ins., i, p. 507, 11 (1764). 



Chermes quercus {nee Linn.), Fourcroy, Entom. Paris, i, p. 229, 11 (1785). 



Coccus fuscus, Gmel., Syst. Nat., 13tli ed., p. 2221, 33 (1788). 



Nee Lecanium fuscus, Sign., Ess. Cochin., p. 250. 



$ form spheroid (diam. 6 mm.) or oblate-spheroid, the transverse diameter 



(7 mm.) being greater than the longitudinal (6 mm.), height in either case 5 mm. 



(the excised part of attachment subtracting from the sphere), constricted as if by a 



ligature close above the part of adhesion to the branch, but leaving a comparatively 

 small orifice for attachment, more or less round according 

 to the exigencies of its position on the shoot ; pale yellow- 

 brown, with an undefined yellowish band down the 

 middle, the colour spreading out on each side of it in 

 several small angles (eventually the colour of the scale is 

 wholly light fuscous-brown) ; surface smooth, with a very 

 few distant punctures somewhat in rows, and around the 

 basal circumference many larger and deeper ; the posterior 

 cleft short, the superior opening in it small, obovate ; anal 

 point very small. Antennae short, of six joints — 1st short, 

 2nd more than twice as long, 3rd nearly twice as long as 

 2nd, 4th shorter than 2nd, 5th still shorter, 6th shortest of 

 all with a few hairs attached. Larvse yellowish, short 

 broad-oval, antennae of six joints. 

 No male scale seen. 



B/eaiimur (I. c.) says — 



"Fig. 2 est celle d'une petite branche d'un chene ordinaire a laquelle tient une 

 Gallinsecte plus grosse que le Kermes et qui est presque spherique." 



This figure exactly represents the scale I have before me, even 

 the median yellow band with jagged sides being indicated. 



Geoffrey (Z. c.) refers to Reaumur's figure, does not name his 

 species, uses only the four words quoted above, and adds, " II ne paroit 

 pas differer de celui de I'orme." But the resemblance to that species 

 (Lecanium uJmi, Linn.) is remote, and this is confirmed by the oppor- 

 tune arrival on July 4th of some scales of L. ulmi just gathered from 

 "wycli elm (IJlmus montand) at Alford, Lincolnshire, by Mr. James 

 Eardley Mason, which quite corroborate my opinion, they being of 

 less regular form, not so uniformly smooth, of a deep chestnut or 

 piceous-brown colour, and witli a large basal opening for attachment 

 to the branch. 



