86 FIRST ANNUAL UEPORT OF THE STATE ENTOMOLOGIST. 



Terences are indicated in the description. This species is stated to be 

 quite common in Washington (the described examples were IVom St. 

 Louis, Mo.), where it is often attacked by a secondary Ghalcid para- 

 site. 



Two other species of this genus, viz.: Hemiteles SmitJiii and H. 

 i^esstUs? are parasitic npon Samia Columbia, 'dud. have been taken from 

 its cocoons by Dr. Hagen.* 



Chalcis ovata Say. — This large and beautiful Ghalcid parasite, and 

 the following minute one, were obtained by me from the Shaw sending of 

 cocoons, and are now for the first published as parasitic upon the spe- 

 cies. Two examples of C. ovata were given out, the first on October 

 21st; later, another was found dead underneath the cocoons. 



Like Pimpla conquisitor, it is also a common parasite upon the cot- 

 ton-worm in the Southern States. Examples of it continued to emerge 

 from the pupte of the cotton-worms sent to the Department of Agri- 

 culture for breeding, from the 4th of August until the 10th of Sep- 

 tember. It is figured on page 195 of the Report upon Cotton Insects, 

 and the original description of Say is given. The figure may also be 

 found in the Departmental Report for the year 1879. f Prof. Riley 

 has described its earlier stages (larva and pupa), and recorded its wide- 

 spread distribution throughout the Southern States, West Indies and 

 Mexico ; also his having reared it from Des))iia maculalis, the grape- 

 leaf folder, in Missouri, and from two species of butterflies, Apaiura 

 Lycaon (Fabr.) and A. Herse (Fabr.) in the Southern States.^ 



It is among the larger forms of the genus, measuring one-fifth of an 

 inch in length ; but one much larger has recently been described by 

 Mr. Ashmead, fi-om Florida, under the name of Smicra gigantea, 

 which is 0.43 of an inch long.§ 



Pteromalus sp. — This species has not been determined specific- 

 ally, but it appears to be closely allied to P. imparum, the parasite so 

 destructive to the cabbage-butterfly, Pieris rajoce, of which large num- 

 bers frequently issue from a single chrysalis. The attack of this spe- 

 cies seems not to have been a strong one, for only sixteen specimens 

 were obtained. They were taken during the latter part of October and 

 first week of November, either at rest upon, or very slowly moving 

 over, the cases, and it is not, therefore, known, whether they all 

 emerged from a single pupa. 



Prof. Riley, to whom I owe the identification of the above Chalcids, 

 informs me that he has also reared them from the Thyridopteryx, and, 

 in addition, the dipterous insect mentioned below. 



*Bull. Buff. Soc. Nat. Sci., ii, 1875, p. 208. 



iBej>t. Commis. Agricul. for 1879, plate 12, fig. 13. 



%Bull. No. 3, U. S. Ent. Commis. — The Cotton- Worm, 1880, p. 43. 



%Canadia7i Entomologist, xiii, 1881, p. 90. 



