THE ENTOMOLOGIST. 73 



extremely scanty, and in nearly all the bladders, which I 

 opened about the end of June, 1 found the larvae dried up or 

 mouldy. For four years I have had a supply of mined alder- 

 leaves : to begin with, I have twice received them from Mr. 

 Snellen ; I then myself met with the larvae on alders in the 

 plantation near Leyden ; ai>d again on the Hoogeland, near 

 Amersfoort, in the neighbourhood of the grounds of Coelhorst. 



I have no information respecting the pupa, as I have not 

 hitherto been fortunate enough to meet with one ; most 

 probably the pupa state is of short duration. 



The imagos appeared between the 16th and the 31st 

 of May : all the examples I have seen were females. 



They belong to the little-known genus Phyllotoma ; 

 according to Klug, the seventh family of the genus Ten- 

 thredo, and in Hartig's classification a subgenus of 

 Emphytus. It appears to me that the characteristics 

 presented by this group entitle it to rank as a distinct 

 genus, unless we adopt the views of the Berlin philosopher 

 and unite them with Emphytus and Fenusa as a divergent 

 group of the great genus Tenthredo. The principal points in 

 which the Phyllotoma especially differ from other Tenthredi- 

 nidae are the short broad head, the projecting eyes, the 

 number of joints in the antennae, and the neuration of the 

 wings. This is, however, not the place to enter further on 

 the value of these characteristics. 



The description of our species is as follows : — The head, 

 seen from above, is very broad, with projecting eyes and 

 depressed forehead ; regarded from the front, broadly trian- 

 gular. Colour black, with the exception of a triangular spot 

 between the antenna? and two lines along the inner margins 

 of the eyes of a sordid yellow colour; the labrum and palpi 

 are also of this tint; the other parts of the mouth being 

 brown. The clypeus is notched in the centre (fig. 10) ; the 

 lip itself being semicircular. The antennae (figs. 5 and 6) are 

 not longer than the head and thorax together, hirsute, 

 and consisting of eleven joints, the first of which arises from 

 a projecting knob, which may, perhaps, have appeared to 

 Klug as a twelfth joint. At all events, this author describes 

 the antennae as 1'2-jointed ; as does also Hartig. The latter 

 may have simply followed King's description, and not have 

 counted the ^oints himself. It may also be that in some 



