EwiNG (H. E.). A new parasite of the House-Fly {Acarina, 

 Gamasoidea). — Enfom. News, Philadelphia, xxiv, no. 10, 

 Dec. 1913, pp. 452-456, 1 pi. 



For several years the author noticed that house-flies are occasionally 

 found flying about with rather large Gamasid mites hanging to them. 

 Never more than a single mite has been observ^ed on one fly. It is 

 well known that flies, as well as many other insects, carry non-parasitic 

 mites, especially of this family, whereby the distribution of the latter 

 is efiected, and for this reason the author at first paid little attention 

 to these mites. Upon later investigation, however, he fomid mites 

 that had their chehcerae inserted into the ventral body-wall of the fly, 

 and in one case the mite remained so attached after being killed, along 

 with its host. When these mites feed upon the house-fly they attach 

 themselves always at the base of the abdomen on its ventral surface, 

 the anterior end of the mite being directed toward the head of the fly. 

 Thus far, only the females of the mite have been found. A systematic 

 description of the species is given, under the name of Macrocheles 

 muscae, sp.n. ; the specimens described were taken from Musca 

 domestica at Ithaca, New York, and at CorvalHs, Oregon. 



Grunberg (K.). Ein neuer Fall des Vorkommens der Larve der 

 Rinderdasselfliege im menschlichen Auge. [A further case of the 

 presence of the bot-fly larva in the human eye.] — Sitz. Gesell. 

 Naturf. Freunde, Berlin, nos. 5 & 6, May-June 1913, 

 pp. 298-304. 



Up to the present there are only three cases recorded in medical 

 journals of the presence of a larval insect in the human eye. The 

 insect was probably in all cases the cattle bot-fly. It w^as always 

 found in the anterior chamber of the eye, and in children of 5 to 9 

 years of age. In the present case, the patient was again a child ; the 

 larva was found in the retina and caused acute chorioretinitis, leading 

 to the loss of the eye. Upon examination of the larva, it was found 

 that it agreed in all its characters with the form described by Kennel 

 in 1904. The author states that it undoubtedly belongs to the genus 

 Hypoderma. The question of the species is more difficult to settle, 

 as it is not unlikely that the larva, in consequence of its unusual 

 surroundings has become slightly modified. 



Alcock (Col. A.). Synopsis of the Anopheline Mosquitos of Africa 

 and of the Oriental Region, — Jl. London School Trop. Med. ii, 

 pt. 3, November 1913, pp. 153-166, 1 pi. 



This is a detailed synopsis intended for the convenience of medical 

 men. The author says that his experience has taught him that the 

 method of identifying Anopheles species by the exact form and dis- 

 tribution of the scales of the body is confusing, and sometimes mis- 

 leading, although he does not ignore the fact that the nature of the 

 scales and the general scheme of colouring of the wings provide the 

 means of partition of the old genus Anopheles into four natural and 

 fairly convenient subgenera, viz. Anopheles (s.r.), Mijzorhynchus, 

 Myzomyia and Nyssorhynchus. 



