1911.1 Gl 



C. lains, but it is mucli Larger, lias the abdomen distinctly oblong- 

 ovate (instead of broadly oviform), and possesses much shorter 

 abdominal bristles. 



From the Nearctic form C. rectangnlaris, Hood, the present 

 species differs in having a longer bristle at each anterior angle of the 

 prothorax, and in the apparent absence of the posterior marginal 

 pair. 



GrENus HiNDSiANA, Karmj, 1910. 



Hindsiana flavicincta, an Ant1iothri'[>s-\\\ie form, has recently been 

 described by Karny from Austria as the type of a new genus. I had 

 had the same form in my possession (from Hungary) and set aside 

 for description for some time, and recently recording it I then accepted 

 Karny's genus with some hesitation.* Wliilst very distinct from 

 H. flavicincta the following species possesses certain features which 

 serve to show its affinities with that insect, and I would point out an 

 important character common to both of them — namely, the forms and 

 positions of the abdominal bristles. In some recent memoirs I have 

 suggested that taxonomically the chsetotaxy is of considerable im- 

 portance in the study of the Thysanoptera, and I fully believe that 

 this will be amply proved by further research. 



Hindsiana Melaleuca, sjj. nov. 



? . Length, 1'6 mm. ; breadth of mesothorax 0"22 mm. Exceptionally 

 long and narrow, being seven times as long as its breadth across the middle of 

 the abdomen. 



Colour light lemon-yellow, almost white, head and prothorax uniform 

 dark brown, pterothoi-ax a lighter shade of bro^\^l and yellowish towards the base 

 of abdomen ; tube same coloiu* as the head, darkest across basal-third and at 

 sides ; ninth abdominal segment light brown shaded to yellowish towards base. 

 Antennae with the first joint of a rather deeper yellow, and the seventh and 

 eighth joints bro'svn, Fore-coxse brown and fore-femur basally brown, but 

 shaded distally to yellow ; intermediate coxae light yellowish-brown. 



Head one and one-quarter times as long as broad through centre, cheeks 

 very slightly and gently widened behind eyes and thence parallel to base ; eyes 

 small, occupying laterally a little more than one-fifth the total length of head, 

 interocular space twice the breadth of one of them ; ocelli small, the space 

 between hind pair about three times the diameter of one of them ; front ocellus 

 overhanging, posterior pair above a line drawn across centre of eyes and near 

 their inner margins ; postocular bristles knobbed, erect, and placed well back 

 and rather near lateral margins. Mouth-cone only reaching one-third of the 

 distance across prostemum, broadly rounded at tip, and two-fifths as long as 

 broad at base. Maxillary palpi long and stout, with an exceptionally long 

 sense-bristle and a short one at tip. Antennae one and two-thirds as long as 



* Bagnall, Ann. Mus. Nat. Hung., HUO. 



