OF WASHINGTON. 149 



FAMILY CYNIPID^K. 



(4) Allotria ambrosice, *Ashm. Reared from Siphonophora 

 ambrosia, in Arlington, Mass. (781.) 



FAMILY CHALCIDID^:. 



(5) Chalcis ovata, Say. From a larva, probably of Zerene 

 catenaria. N. H. (11386.) 



(6) Perilampus cyaneus, Brulle. One specimen from a 

 tachinid pupa reared from a larva of Spilosoma virginica, in 

 Cambridge, Mass. Numerous specimens, in latter half of Sept., 

 from a breeding-cage of larvae of Zerene catenaria, in N. H. ; 

 as these larvae were badly parasitized by tachinids, it is likely 

 that the chalcids were, in this case also, parasites of the tachi 

 nids. (674, 934.) 



(7) Encyrtus thyreodoniis, *Ashm. A larva of Smerinthus 

 exccecatus, taken 8 Sept., 1882, in Cambridge, Mass., that went 

 under ground for pupation 3 Oct., was dug up later, and found 

 to be parasitized by Thyreodon morio. From the cocoon of the 

 Thyreodon emerged, April, 1883, a large number of E. Thy 

 reodontis, of which 170 specimens were preserved and many 

 lost. On 6 Sept., 1882, a female E. thyreodontis was watched 

 while apparently ovipositing in a larva of S. exccecatus ; both 

 larva and chalcid were preserved, and the former produced a 

 healthy normal male imago, not producing chalcids, perhaps 

 because it had not been parasitized previously by a Thyreodon 

 to provide a suitable host. Another E. thyreodontis was ob 

 served stinging a larva of Attacus cecropia ; this larva died 

 later, possibly of some bacterial disease, but no chalcids came 

 from it. Were the two presumably resultless ovipositions cases 

 of mistaken instinct? (340, 345, 563.) 



(8) Homalotylus terminalis, Say ( = Scelio terminalis 

 Say = H. obsctirus, How. = Eutelus scymnce Schimer). 

 Bred several times, in August, 1885, from larvae of Coccinella 

 novemnotata, taken in Arlington, Mass. Synonymy by Mr. 

 Ashmead. (731 c.) 



(9) Pteromalus puparum, L. From pupa of Pieris rapce, 

 Aug., 1895, in N. H. (1124.) 



(10) Pteromalus tabacum, Fitch. Found a dead larva of 

 Smerinthus geminatus, covered with cocoons of an Apanteles, 

 29 Aug., 1892 ; the Smerinthus had been parasitized also by a 

 tachinid, and its half -starved larvae appeared the next day, only 

 two of them with sufficient vitality to pupate ; these two never 

 producing images. A very large number of chalcid imagos 

 emerged. P. tabacum was also reared, Aug., 1895, from a 



