22 [January, 



with a considerable expanse of wing, and long, very filiform antennae, 

 which have alwa3^3 more than nine joints, and sometimes as many as 

 fifteen. Thomson (followed in this by Mr. Cameron) sometimes 

 gives " antennis 10-12-articulatis," " antennis 15-articulatis," &c , 

 among the characters for distinguishing particular species ; but per- 

 sonally I have more often found this character a snare than an 

 assistance, and Herr Konow, to whom I referred my difficulties, tells 

 me that he does not consider these differences in the number of joints 

 to be specific. This was also Hartig's view, who says that in all the 

 species the number of joints is normally from 12 to 14, but in par- 

 ticular specimens may fall as low as 10, or rise as high as 15. (It is 

 well known that in multi-articuhite structures there is usually much 

 variability in the precise number of the joints). 



Really satisfactory characters for distinguishing Phyllotoma spp. 

 have still, it seems, to be discovered. Their coloration is far from 

 constant, the antennal characters cannot (as we have seen) be 

 trusted, nor — as Herr Konow assures me— those derived from the 

 clearness or infuscatiou of the wings. Still, propei'ly prepared ex- 

 amples of such species as occur in this country can usually be named 

 without much difficulty. 



I possess British examples of four out of the five species 

 described in the Monograph. Of the fifth {ochropoda, Thorns.), I 

 have only seen the specimens in the Cameron Coll. at S. Kensington. 

 The locality recorded for them is Worcester. I am glad not to have 

 to propose any changes in our present names for the species belonging 

 to this genus. 



SYNOPTIC TABLE OF BRITISH PHYLLOTOMA spp. 



1. Abdomen black, with or witliout white markings at the sides or on the venter. 



Humeral cell in hind-wings complete {i.e., the humerus and brachius join 

 before approaching the apes of the wing) 2. 



— Abdomen entirely or in great part reddish. Humeral cell in hind-wings open 



at the apex (i.e., the humerus does not run into tlie brachius) 4. 



2. Pronotuni and tegulse black ; legs, "pale-yellow verging to testaceous" (Cam.) 



with black bases ochropoda, Thorns. 



— Pronotum and tegulse white (or partly so) ; ground colour of legs white ... 3. 



3. Abdomen with distinct white markings at the sides. Wings hyaline with 



(generally) a rather conspicuous fuscous streak below the stigma... 



iiemorata, Fall. 



— Abdomen immaculate at sides. Wings darker than in nemorata (blackish), but 



not definitely streaked below the stigma aceris, Kalt. 



I 



