104 Dr. Fr. Meinert on the Ugimyia-Larva. 



and of the pupa, and, without knowing the imago, lie 

 classifies the animal as a new distinct genus and species 

 — Ugimyia sericarice. The other paper, a dissertation 

 by 'Cornalia (I. c. pp. 217-227), gives an account of the 

 imago, accompanied by figures exhibiting the animal in 

 its successive stages of evolution. Prof. Cornalia further 

 advances the theory that the fly in question, after the fashion 

 of the common Tachinarias, deposits its eggs externally 

 on the skin of the silkworm, into whose inner organs the 

 maggot then forces its way through the skin. Afterwards, 

 before transforming itself into a pupa, the maggot again 

 makes its way out from the pupa and cocoon of the silkworm. 



Before, however, Mr. Rondani published his paper, the 

 Secretary of the English Legation in Japan, Mr. Adams, 

 had already given an account of this remarkable fly and its 

 attacks on the silkworm (" Deuxieme rapport sur la sericulture 

 an Japon," Rev. univ. d. sericult. Lyon, no. 36, 1 avr. 

 1870*). And in the interval between the publications of 

 Rondani and Cornalia the same fly was mentioned by Guerin- 

 Meneville under the name of Tachina (? Phorocera) Oudji in 

 his " Observations sur la nature de V Oudji, parasite des vers a 

 soie au Japon, presentees a. l'Academie des Sciences, dans sa 

 seance le 17 avril, 1870" (Compt. Rend. lxx. p. 844 ; Rev. 

 et Mag. Zool. 2 se*r. torn. xxii. pp. 178-181). Besides, the 

 mailer has been touched upon by Prof. Westwood (Proc. 

 Entom. Soc. Lond. 1870, p. xxii), by Mr. Haberlandt (' Der 

 Seidenspinner '), and by Mr. Pryer, who, in his ' Catalogue 

 of Japanese Lepidoptera,' mentions the Uji as an enemy of 

 the silkworm, and, further, states that he " has noticed that 

 the Uji ... . deposits its eggs about the larva on the leaves, 

 and not on the insect" Unfortunately these three last-named 

 papers have not been accessible to me. 



The Ugi-plague, however, has been more thoroughly treated 

 in Japan, its native country, than in Europe, and principally 

 in an excellent paper by C. Sasaki, Rigakushi (" On the Life- 

 history of Ugimyia sericarice, Rondani," Journ. Sc. Coll. of 

 the Imp. Univ. of Japan, 1886). But other Japanese savants, 

 before Mr. Sasaki, have studied this fly, its habits, and 

 its connexion with the silkworm. Twelve or thirteen years 

 earlier, the father of the above author, Mr. N. Sasaki, 

 commenced some investigations into the subject, stating that 

 the larva or maggot of the Ugimyia was found imbedded in 

 the main trunk of the silkworm's tracheae directly under a 



* The figures accompanying this paper are styled by Guerin-Meneville 

 " suffisantes." Sasaki, however, deems them insufficient. I have seen 

 neither the paper nor the illustrations. 



