182 PROCEEDINGS ENTOMOLOGICAL SOCIETY 



whole length of the egg in contact. This is assuredly an error 

 on the part of the artist, no doubt attributable to the manner 

 in which the specimen was prepared. Doctor Sambon's paper 

 is valuable, not only for the able discussion of the recent progress 

 in our knowledge of Dermatobia, but particularly for its diligent 

 exposition of the extensive literature relating to this remarkable 

 fly. 



LITERATURE CITED. 



(1) MORALES, RAFAEL: in El Nacional, Guatemala, Diciembre, 1911. 



(Not seen by the writer). 



(2) GoNZALEz-RiNCONES, RAFAEL: El Aeroplane del Gusano Macaco. El 



Universal, Caracas, 4 Diciembre, 1912. (Not seen by the writer). 



(3) ZEPEDA, PEDRO: Nouvelle note concernant les moustiques qui pro- 



pagent les larves de Dermatobia cyaniventris et de Chrysomia 

 macellaria et peut-etre celle de Lund, et de la Cordilobia anthro- 

 pophaga. Rev. de Med. et d'Hyg. Trop., vol. 10, no. 2, pp. 93-95, 

 1913. 



(4) SURCOUF, JACQUES : La transmission du ver macaque par un rnoustique. 



C. R. hebd. Acad. Sci. Paris, vol. 156, no. 18, pp. 1406-1408, 1913. 

 (Abstract: Rev. Applied Ent., Ser. B, vol. 1, no. 7, pp. 106-107, 

 1913.) 



(5) KNAB, FREDERICK : The life-history of Dermatobia hominis. Amer. 



Journ. Trop. Dis. and Prev. Med., vol. 1, no. 6, pp. 464-468, 1913. 



(6) MORALES, RAFAEL : Comprobaciones a nuestro trabajo sobre la Derma- 



tobia cyaniventris publicado en 1911. La Juventud Med., Guate- 

 mala, vol. 13, no. 12, Diciembre, 1913, pp. 4-8. (Published Janu- 

 ary, 1914.) 



(7) SAMBON, Louis W. Observations on the life-history of Dermatobia 



hominis (Linnaeus Jun., 1781). Rept. Advisory Comm., Trop. 

 Dis. Res. Fund for 1914, London, 1915, pp. 119-150. 



(8) BALFOUR, ANDREW: Tropical problems in the New World. Trans. 



Soc. Trop. Med. and Hyg., vol. 8, no. 3, pp. 75-108, 5 pis., Jan., 

 1915. 



In discussing Mr. Knab's paper, Dr. Townsend suggested that 

 the female Dermatobia was probably led, through an olfactory 

 tropism, to oviposit upon the body of the carrier; that the eggs 

 were incubated in the uterus and contained the fully-formed 

 maggot at time of deposition; that the maggot was led, through 

 a positive thermotropism, to escape from the chorion at the time 

 that the carrier imbibes a meal of warm blood; and that the 

 maggot is unable to penetrate thick skin of itself but must enter 

 the puncture made by the carrier, being perhaps guided thereto 



