66 EXPERIMENT STATION RECORD. 



nomus punctatus, Gluvtocnema pidicaria, Epitrix cucumeris, E. parvula, 

 Trichobaris trinotata, Sphinx (Protoparce) Carolina, Aphis gossypii, 

 A. brassica; A. persicce-niger, Myzus cerasi, Biabrotica vitata, Mur- 

 gantia histrioniea, Anthonomus signatus, Graphops marcassitus, Typo- 

 phorus (Paria) canellm, Gonotrachelus nenuphar, and Biplosis pyrivora. 

 In the comments on the San Jose scale (Aspidiotus pernidosus) it is 

 noted that in an orchard containing 28,311 trees 13,000 are now dead or 

 dying-. The partially mature insect has been found in large clusters on 

 crab grass (Panicum sanguinale). 



Notes on some little -known insects of economic importance, W. G. John- 

 son (pp. 83-85). — The following are noted : Hydrcecia marginidens, found 

 boring into the main stems and larger branches of cosmos plants; 

 Pyrausta ferrugalis, found injuring young tender lower leaves of tobacco 

 in a hotbed; Uranotes melinus, found on beans; Cerotoma trifurcata 

 {G. eaminea), observed in a patch of wax and Lima beans; Grambus 

 caliginosellus, which was very destructive during 1897 to young corn in 

 several counties; Tribal i urn madens, found in mill products sent from 

 the State of Washington; and Aspidiotus forbesi, which during the 

 season has been found very abundant on young apple, pear, and cherry 

 trees. 



A list of the members of the association is appended. 



Revision of the Tachinidee of America north of Mexico, I). W. 

 Coquillett ( U. 8. Bept. Agr., Division of Entomology Bid. 7, tech. 

 ser., pp. 154). — This, a purely technical toxinomic monograph, is so 

 arranged as to be of great use to the student. The economic impor- 

 tance and the habits of the group are very briefly noted, and the 98 

 species of parasites, arranged alphabetically in connection with their 

 proper hosts, are listed. This is followed by a list of the 109 hosts in 

 alphabetical order, with mention of the species of the group parasitic 

 upon them. The orders of the class Insecta are attacked in the propor- 

 tions shown by the following figures: Hynienoptera, 12; Hemiptera, 1; 

 Orthoptera, 4; Coieoptera, 17; and Lepidoptera, 130. Leucania uni- 

 puncta and Orgyia leucostigma, each with 7 species of parasites, are 

 the two forms most severely attacked. 



Following these lists is a brief explanation of the classification and of 

 the terms employed. A long table of genera and a list of 31 unrecog- 

 nized genera are given, introductory to the systematic arrangement 

 of the genera ana the description of species. 



On the biology of Ocneria dispar in Russia, K Kulagtn (Illus. 

 Wchenschr. Ent., 2 {1897), No. 27, pp. 418-420).— This pest appeared in 

 great numbers in the government of Kostroma in 1895 and 1890. In 

 1894 and 1895 it appeared in great numbers along with Ocneria monacha 

 in central Russia. The period of devastation generally lasted about 

 three years, but in the region of Moscow it lasted four years (1893-1890). 

 In 1895-90 in the government of Nijninovgorod the moths appeared 

 from July 8 to 18. 



It was found that the eggs would sfand a temperature of 40° E. 



