Vol. xxii] ENTOMOLOGICAL NEWS. 467 



THE MODE OF INFECTION BY THE CAYOR WORM. Doctors Rodhain 

 and Bequaert conclude, from their observations in the Congo State, 

 that Cordylobia anthropophaga (Grunberg) lays its eggs on the ground. 

 The larvae, known generally as Cayor worms, crawl over the soil un- 

 til they come in contact with man or a mammal, penetrate the skin and 

 lie in the subcutaneous tissue, causing the formation of tumors. On 

 reaching full growth, the larvae leave the host, fall to the ground, bury 

 themselves and there pupate. This Muscid fly is said to be the most 

 common cause of human or animal myiasis in tropical Africa, from 

 Senegal to Natal. In the region of Bas-Katanga where these inves- 

 tigations were made, dogs appeared to be the principal hosts, although 

 Cordylobia larvae were found also in guinea-pigs, a monkey and two 

 white men. The larvae are always localized on those parts of the 

 hosts which come in immediate contact with the soil. (Ann. Soc. 

 Entom. de Belgique, Iv, pp. 192-197, 1911). 



THE OCCURRENCE OF POLYNEMA CONSOBRINUS GIRAUW IN GEORGIA. 

 Professor A. L. Quaintance, in charge of Deciduous Fruit Insect 

 Investigations, Bureau of Entomology, U. S. Department of Agricul- 

 ture, had loaned to me some time ago several specimens of species 

 of Mymaridae among which was a female of the above named Poly- 

 nema. The specimen has been referred to in print before as a Poly- 

 nema reared in connection with Polynema piceipes Girault (Psyche, 

 1905, p. 92). Only recently have I been able to identify it. It has 

 been remounted in balsam from a tag and bears the labels, "Fort Val- 

 ley, Ga. J. H. Beattie, VI, 29, 1905. Quaintance No. 774. Reared in 

 connection with eggs of Anthonomus quadrigibbns Say in Crataegus 

 fruit." As the species consobrinus has been recorded as a parasite of 

 the eggs of Enchenopa binotata Say, it is probable that this specimen 

 came from some membracid or jassid egg concealed within the fruit 

 of the hawthorn. 



This specimen is worthy of mention not only because it extends the 

 known distribution of the species, but also because it appears to be a 

 variant. Thus, the proximal tarsal joint of the caudal legs is dis- 

 tinctly longer and more slender than usual, the second tarsal joint 

 of the same legs longer than the distal joint, the first joint subequal 

 in length to the combined lengths of the other three joints, facts 

 which are not true for the comparatively large number of specimens 

 of consobrinus which I have seen so far. But the relative length of 

 the joints of appendages is by no means constant in Mymaridae, there 

 being considerable variation in some cases and because of this I have 

 little doubt that the specimen under consideration is but a variant 

 and not a distinct species. The discal ciliation of the fore wing in 

 this specimen disappears farther out from the base of the wing than 

 is usual, but this also varies somewhat and has no specific value in 

 this case. A. A. GIRAULT. 



