HYMENOPTEROUS PARASITES OF COCCIDAL. 257 
from an uncertain species—rendered ‘‘ Diaste”? by D. T.—of 
this genus. 
17. Diaspis rose, Behé. 
This has been often parasitised : by Aphelinus diaspidis, How. 
(Revis. p. 26); by Aspidiotiphagus citrinus, How. (1. ¢. p. 81) ; by 
Phenodiscus (Hneyrtus) eneus, Dalm., which was bred from it in 
Austria by Mayr (Verh. z.-b. Ges. 1875, p. 758); by Aphycus 
brunneus, How. (Descr. N. A. Chal. p. 17); by Arrhenophagus 
chionaspidis, Aur. (Ent. Tidsk. 1888, p. 146); and by Coccobius 
diaspidis, Ashm. (1900, p. 408), at Washington. The synonymous 
Aulacaspis (Aspidiotus) rose is said by Ratzeburg (Ichn. d. Forst. 
ili. 196) to have been bred by Bouché, and to have produced 
Coccobius notatus ; Gaulle (Cat. 26) quotes Cameron (Brit. Phyt. 
Hym. iil. 233) in saying that the Cynipid Allotria erythrothoraz, 
Htg., preys upon it. Newstead does not determine the Encyrtus 
(Mon. Brit. Coce. i. 81) which causes the female to swell and the 
skin to become “highly chitinised.”’ 
18. Diaspis carueli, Targ. 
This is one of the four hosts given by Howard (Revis. p. 25) 
for Chalcis (Aphelinus) mytilaspidis, Baron. 
19. Aulacaspis pentagona, Targ. 
Like A. ros@ above, this species is given by Howard (Revis. 
p. 31) as attacked by Aspidiotiphagus citrinus. 
20. Chionaspis eleagni, Green.* 
C. eleagniis a host of Physcus variicornis, according to Howard 
(Revis. p. 43). 
21. Chionaspis salicis, Linn. 
The Tridymid, Tritypus areolatus, is said by Ratz. (Ichn. iil. 
227) to have been bred by Hr. Nordlinger from a Coccus on Salix 
aurita, from which the parasite emerged through a lateral hole. 
Arrhenophagus chionaspidis is said by Aurivillius (Hint. Tidsk. 
1888, p. 146) to have emerged from this species (yuoted by Ashm. 
p- 409), and Gaulle gives (Cat. 100) Habrolepis zetterstedtt, 
Westw., as also attacking it. From a species of Coccid on willow, 
but unnamed, Ashmead says (p. 398) that Microterys bolus, Walk., 
has been bred at Hudson’s Bay. 
22. Chionaspis graminis, Green.* 
From this species Howard (Proc. U. 8. Nat. Mus. 1896, p. 637) 
records his Mncyrtus chionaspidis, from Ceylon (placed in the 
genus Adelencyrtus by Ashm. p. 402), as well as his Procto- 
trypid Anthemus chionaspidis (1. ¢. p. 643). 
(To be continued.) 
ENTOM.—OCTOBER, 1909. Y 
