39 
report the statement is made that it is possibly not a primary parasite, 
but that it infests one of the larger Ichneumonid parasites of the cotton 
worm. " This supposition is, however, contradicted by the fact that 
Aletia pup* parasitized by this Chalcid are always found packed to 
overflowing with the Tetrastichus, whereas were the latter simply para- 
sitic upon Pimpla or Obalcis they would in all probability be found 
only in the abdomen of the Aletia pupa." 
In 1894 Mr. Ashmead (Trans. Am. Ent. Soc, Vol. XXI, pp. 343-314) 
described a parasite reared June 10, 1891, by Dr. A. D. Hopkins, at 
Morgan town, W. 
Va., from Orgyia 
leucosiigma on ma- 
ple, as Syntomos- 
phyrum orgy ice. 
This species proves 
to be identical with 
Eiley's S. esurus 
and introduces it 
among the tussock- 
moth parasites. It 
has not been reared 
at Washington 
from the tussock 
moth, but during 
the spring of 1890 a large series of specimens was reared from overwinter- 
ing chrysalids of the fall webworm. A single parasitized chrysalis 
was examined after tliese parasites had emerged and no trace could be 
found of a primary parasite. The exact host relations of this species 
must therefore still remain in doubt, although from group habits it 
is reasonably safe to say that it is a hyperparasite. In this event it 
may be secondary (feeding upon Pimpla) or tertiary (feeding upon 
Bathythrix). 
Eupelmus limneriae n. sp. 1 
But two specimens of this insect were reared in the course of the 
investigations upon the tussock moth, both issuing from cocoons of 
Limner ia valida. It is the same species which was recorded in Bulletin 
No. 10 as being a hyperparasite upon Limneria and upon Meteorus. 
Fig. 20.— Eupelmus limnei iu: ; Female— enlarged (original). 
Elachistus cacoeciae Howard. 
This insect, which was originally described in Bulletin No. 5, 
first 
series, of the Division of Entomology, page 28, as probably a primary 
parasite upon Gacceeia rosaeeana and HypJiantria cunea, now appears, 
without doubt, to be a secondary parasite. A single male issued in 
a vial in which the pupae of what we take to be Cratotechus orgyiw Fitch, 
shown at fig. 13, were being kept to rear the adult. 
1 Described iu the appendix, page 56. 
