LecaniincB. 183 



A number of subgenera have been suggested for the sub- 

 division of this large genus : but, with a few exceptions, their 

 characters are vague and ill-denned. There are certain well- 

 marked groups — such as those species having flabelliform 

 marginal hairs, and those possessing a submarginal series of 

 glandular pits — that may deserve subgeneric or even generic 

 rank. Prof. Cockerell is now studying the genus, and will 

 publish the final results of his labour in the Ge?iera Insectoruiii. 

 His widely recognised knowledge of the family, and the immense 

 amount of study that he has bestowed upon it, especially qualify 

 Prof Cockerell for the execution of the much-needed work — a 

 general classification of the Coccidje of the world. Until the 

 appearance of that work, it will be convenient to retain our 

 Ceylonese forms in the single genus Lecanmin. 



In the following synopsis the primary characters are founded 

 upon the general form : the secondary characters, on the structure 

 of the marginal hairs : and the tertiary characters on the number 

 of antennal joints. This arrangement must not be taken as in- 

 dicating any close affinity between the neighbouring species, but 

 merely as a convenient aid to identification. 



Synopsis of Species. 



A. ? flattish or moderately convex ; skin soft, wrinkled when 

 dry ; usually ovoviviparous. 

 {a) Marginal hairs simple, pointed : 



{a}-') Antenna with six joints Capparidis, p. 187. 



{b^) Antenna with seven joints Hesperidum, p. 188. 



<^(P) Antenna with eight joints : 



iff) Derm-cells conspicuous (occurring only in ants' 



nests) FoRMJCARii, p. 190 



(1^^) Derm-cells inconspicuous : 



{c^') Anal operculum as broad as, or broader than 



long Frontale, p. 192 



(Jfi) Anal operculum longer than broad. 



Ophiorrhiz/E, p. 193 

 (^) Marginal hairs dilated or frayed : 



(a^) Antenna with six joints ACUMINATUM, p. 195 



{U^) Antenna with seven joints : 



(«^) Under-surface of abdomen with deep purplish stain. 



SiGNlFERUM, p. 197, 



