April 1S92.J 



PSYCHE. 



259 



emerge from the earth solely because the 

 Hyphantria cocoons are placed therein, 

 though I have found the puparium 

 separate from the cocoon in the earth. 

 Mr. Harrison G. Dyar, to whom 1 

 seut one of the Eucaterva cocoons from 

 which the moth had emerged, wrote me 

 as follows concerning two Tachinid 

 eggs which he found within it, and 

 which are doubtless those of the above 

 species : 



"There were two eggs of Tachina upon the 

 cast skin contained in the cocoon, and both 

 had hatched but apparently had failed to 

 enter the larva. Probably they are eggs of 

 the species of Tachina you have bred from 

 the cocoons. They are elliptic ovate in out- 

 line, flat below and rounded above, smooth 

 shining white. Under the microscope, they 

 appear very faintly divided into minute hex- 

 agonal or circular areas. Length 0.6 mm., 

 width 0.3 mm. 



"The larvae had hatched by breaking a 

 piece off of the pointed end. The eggs had 

 been placed upon the body of the caterpillar, 

 not on the head." 



Melgenia webster i Twns., Can. 

 entom., xxiii, 206. This species was 

 recorded as bred from a chrysalis. 

 Professor Webster sent me a portion of 

 the chrysalis, and it has since been 

 determined, by Dr. Henry Skinner, as 

 belonging to Pyrantels cardui. Re- 



garding the generic position of this 

 Tachinid, it does not belong in Mei- 

 genia. The best place to which I can, 

 with my present knowlege, relegate it, 

 is in the genus Prospherysa v. d. W. 

 Dr. Brauer, in a letter to me, has re- 

 ferred it with a query to Achaetoneura. 

 Phorocera (A/eigenia) protniscua 

 Twns. should perhaps be referred to 

 the same genus as the preceding. It is 

 indicated by Brauer in litt. as belong- 

 ing either to Achaetoneura or Proso- 

 paea. If these genera can be used, it 

 will be well to recognize them. 



Tachhia clisiocamfae Twns. is re- 

 ferred by Brauer in litt. to Eutachina. 

 This I do not approve of, as there is no 

 necessity for the creation of the new 

 genus Eutachina to contain the forms 

 referred to Tachina sensu stricto. 



I would like also here to make a note 

 of the fact that Dr. Brauer informs me 

 by letter, as also in a note of his in the 

 Sitzungsber. k. k. zool.-bot. gesellsch. 

 Wien,of May, 1S91, that he first called 

 attention to the relationship of the Oes- 

 tridae with the Muscidae in 1858, in the 

 Verh. zool.-bot. gesellsch. I wish, 

 therefore, to correct my statement in 

 the Proc. ent. soc. Washn. ii, 90, that 

 this view was first advanced by Loew. 



THE LARVA OF SARROTHRIPA REVEYANA. 



BY HARRISON G. DYAR, YOSEMITE, CAL. 



The larva of this species occurred season in August and I obtained them 

 abundantly on poplar at Yosemite, Cal., at this time in 1S89 and 1S91. When 

 in July. The moths emerged the same I first noticed the larvae living grega- 



