192 Journal New York Entomological Society. [Voi. v. 



black throughout, no bloom ; a series of large lateral patches, one on a 

 segment, on joints 2 and 5-12 covering the spiracles, creamy yellow. 

 These patches are as broad as the width of annulet 2 and posterior half 

 of annulet i. Thoracic feet leaden, clear at the joiiits ; abdominal feet 

 clear at tip. On attaining this stage the larvae enter the earth. 



Found commonly on the button bush (^Cephalanthus occidentalism 

 around New York City early in June, a large and striking larva, often 

 completely defoliating the plants of their young leaves. They all disap- 

 pear by the middle of June and the flies do not appear till the following 

 spring. 



Macrophya trisyllaba Say. ^ 



Found by Mrs. Slosson at Franconia N. H., feeding on the elder 

 {Smnhucus raceinosa). 



Upper half of head black, lower white. Body segments 7-annu- 

 late with distinct white points on the second and fourth annulets. 

 Dorsum to the spiracles black, mottled with sordid white principally in 

 a festooned narrow subdorsal line and straight dorsal one. Below the 

 spiracular line whitish with several small black spots on each segment 

 and one on the base of the foot. Anal plate black. Thoracic feet pale 

 with a mark at the base ; abdominal feet on joints 6 to 13. 



Ultimate stage. — Smooth, without points, shining waxy, the black 

 coloration as before but paler, dotted with whitish and the creases of 

 the annulets pale, hence the general appearance is paler than before. 

 Head pale, eye black ; a dusky shade over the vertex. The larvae enter 

 the ground to hibernate. 



Mrs. Slosson sent me a itw of these larvae in September ; the fly 

 emerged the following spring : 

 Tenth redo atroviolacea Norton, var. peratra, var. nov. 



Agreeing exactly with the description of Tetzf/iredopsis atroviolacea, Norton, 

 except that there is no white spot on the posterior coxre and the third joint of an- 

 tennae is one and one-half times as long as the fourth. This is doubtless a variety of 

 T. atroviolacea. The fly is entirely black, head, thorax and legs dull with large 

 punctures, wings rather opaque violaceous, the venation of the posteriors as described 

 for the male of T. atroviolacea. One male, bred from larva. 



The larva is a very curious one. For a Tenthridinid remarkably 

 specialized, having reached the stage of some Noctuid Lepidoptera 

 (<?. g., Psetidoglossa hibricalis or Ciicullia artemisia). 



Looks a little flattened, but thick and robust. Feet on joints 6 to 

 13. Head round, dull black ; width 1.4 mm. Body segments 7-annu- 

 late, the whole body soft dark gray, the ground color uniform. A 



