IQ2 ENTOMOLOGICAL NEWS. [June, '02 



I also am quoted as referring the insect to the Noctuidae. I did so 

 because the first specimen that Dr. Skinner sent me had vein 5 of the 

 fore wings nearer to 4 than to 6 ; in the hind wings, vein 8 remote from 7, 

 anastomosing with the cell shortly near the base. A second specimen, 

 however, had vein 5 from the middle of the discocellulars, and is, there- 

 fore, a Geometrid, considering the other characters, tongue present, 

 antennas not clubbed nor dilated, hind wings with vein ic absent. The 

 position of vein 5 of the fore wings is not usually variable, but here it cer- 

 tainly is. A knowledge of the larva would be useful. I think that the 

 best place for the species, at present, is in the Geometridae. Later I 

 expect to remark further on the subject and shall refer to Dr. Skinner's 

 identification of the genus Psychophora, with which I am now inclined to 

 agree. HARRISON G. DYAR. 



I AM not sufficiently interested in the Heterocera to try and establish 

 the position of Psychophora in the classification of the moths, and now 

 leave it to others. Dr. Dyar is correct in saying that this genus does not 

 belong to the family Bombycidae as at present restricted, but does it 

 belong to the Geometridae or Noctuidae? Would it not be logical to infer 

 that the first specimen Dr. Dyar examined belonged to the Noctuidae ; 

 the second specimen to the Geometridae, and a possible third to some- 

 thing else? If he is satisfied with his examination of the neuration, why 

 does he say "A knowledge of the larvae would be useful"? I have 

 relaunched the genus and added a new species and now wish them a 

 pleasant voyage to the land of species and synonyms. HENRY SKINNER. 



VARIATION IN HET^RINA TITIA DRURY (ODONATA). In my work 

 on the Odonata in the Biologia Centrali-Americana, I have grouped the 

 species of Hetczrina according to the number of rows of cells on the hind 

 wings lying between the lower sector of the triangle and the hind margin. 

 In this scheme H. titia is placed among those species having " two rows 

 of cells (not more) in a considerable part of the area mentioned." Since 

 the publication of this work, Mr. Banks has sent me a male and a female 

 of titia from Laredo, Texas, both of which have three rows of cells in 

 this area for a length of seven cells (or five cells in the left wing of the 

 male). This has caused me to re-examine the material enumerated in the 

 Biol. C.-Am. consisting of 54 cT, 31 $, to determine the exact proportion 

 of individuals in which three rows exist. As the result I find frequently a 

 single line of three cells, between the sector and the margin (and a single 

 line of three cells does not of course constitute three rows), while in 18 

 wings of 9 rT and 2 Q are three rows. This means that in the 85 individ- 

 uals, 10% per cent, of the hing wings have three rows ; or, to separate the 

 sexes, 14.8 per cent, of the hind wings of the males and 3 per cent, of the 

 hind wings of the females have three rows. These three rows extend for 

 a distance of only two cells in 9 wings of males, and for a distance of from 

 3 to 6 cells in the remaining 9 wings, male and female. 



