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



contain fat granules. In some examples they are broad and the dark 

 markings diffuse and pale. No bloom or white down. 



Stage IX. — (Ultimate.) Exactly as in the last stage except that the 

 dorsal pale annulets are light blue instead of greenish gray, the black is 

 bluish rather than olivaceous and the skin is very slightly more shiny. 

 Head 2.5 mm. The larvae bore in wood to pupate. 



Food-plant — Dogwood {Cornus alter nif alia). 



Harpiphorus varianus Norton. 



Described by me (Can. Ent., xxvii, 196) as H. farsatus. The 

 flies of these two species are occasionally alike in color, as Mr. Harring- 

 ton indicates, but Mr. MacGillivray has separated them by the structure 

 of the female saw-guide and saw. The larvae are abundantly distinct. 



Harpiphorus versicolor JVorton. 



Eggs. — About three laid side by side under the lower epidermis 

 from above ; a short row nearly parallel to a side vein ; 1.5 x -6 mm., 

 swelling the leaf; faintly yellowish with a green central area. 



Stage I. — Head pale brown, eye black; width .33 mm. Body 

 curled, whitish, rather opaque, without bloom. Food green in the 

 slightly enlarged thorax. 



Stage II. — Head pale brownish, darker over the vertex ; width .5 

 mm. Body annulate, colorless or greenish from food, mealy white. 



Stage III. — Head black, mealy only in a band across between the 

 eyes; width .8 mm. Body yellow, well covered with the white mealy 

 secretion. 



Stage IV. — The same. Width of head i.i mm. 



Stage V. — Width of head 1.5 mm. 



Stage VI. — Head black, slightly mealy except the eye and mouth : 

 width 2.1 mm. Body coarsely 6-annulate, mealy or short woolly to and 

 including the subventral folds ; no marks whatever ; feet on joints 6 to 

 13. Thorax slightly enlarged. 



Differs at once from H. varianus, in being without the black anal- 

 plate. 



Stage VII — (Ultimate.) Head black, yellow below the eyes, no 

 bloom; width 1.5 or 2.1 mm. Body shining, the subventral folds and venter 

 ocher yellow, dorsum blue gray, marked with leaden black on annulets i, 



3, 5 and 6 subdorsally and on all the annulets laterally, leaving a dor- 

 sal and a subdorsal line of the ground color connected on annulets 2 and 



4. The lower end of this dorsal color is incised before the spiracle by 

 the upper yellow subventral fold. Feet all pale ; bores in wood. Found, 

 on Cornus at Greenwood Lake, N. J. 



