PROC. ENT. SOC. WASH., VOL. 21, NO. 7, OCT., 1919 l6l 



In life, this scale is usually found between the pine needles 

 just at the point where they emerge from the sheath. Occa- 

 sionally specimens are found within the fascicular binding or out 

 on the needles not over an inch away. They are usually on the 

 needles which are one and two years old. 



There is no doubt whatever about the last three stages for the 

 adult female has been found within the apodous form, the latter 

 having the cast skin of the preceding stage covering the posterior 

 part of the body. A smaller cast skin, presumably of this indi- 

 vidual, was beneath. There is a decided difference in the size 

 of these two cast skins which also would indicate that there 

 are two larval stages preceding the apodous form. 



EXPLANATION OF PLATES. 



Plate 13. 

 Matsucoccus fasciculensis, n. sp. 



A. Several individuals situated in a fascicle of pine needles. (Enlarged.) 



B. vSpiracles and alternate button-like processes of first stage larva, side 



and top view. (Very much enlarged.) 



C. Leg of first stage larva. (Very much enlarged.) 



D. Antenna of first stage larva. (Very much enlarged.) 



E. First stage larva, vantral view. (Greatly enlarged.) 



F . Cast skin of first stage larva, ventral view. (Much enlarged.) 



Drawn by F. B. HERBERT. 



Plate 14. 

 Matsucoccus fasciculensis, n. sp. 



A. Apodus form or third stage larva, ventral view. (Much enlarged.) 



B. Spiracle of apodous form, top and side view. (Very much enlarged.) 



C. Antenna of adult female. (Very much enlarged.) 



D. Leg of adult female. (Very much enlarged.) 



E. Duct of adult female, which, viewed from above, has the appearance 



of an 8-shaped pore. (Very much enlarged.) 



F. Large simple pores of adult female. (Very much enlarged.) 



G. Spiracle and tracheae of adult female. (Very much enlarged.) 

 H. Adult female, ventral view. (Much enlarged.) 



Drawn by F. B. HERBERT. 



DESCRIPTIONS OF SEVEN NEW SPECIES OF OPIUS iHYMENOP- 



TERA-BRACONIDAE . 



BY A. B. GAHAN, U. S. Bureau of Entomology. 



This paper contains descriptions of seven new species belonging 

 to the genus Opius. Types of five of the new species are from 



