150 EXPERIMENT STATION EECORD. 



injectert witli grasserie juice tliaii wheu fed leaves stained tlierewith. The 

 author finds that fresh juice is more virulent than juice which has been kept 

 for some months. 



The leopard moth as a pest of apple nursery stock, W. E. Beitton (Jour. 

 Econ. Ent., 1^ (1911), No. 3, pp. 298, 299, pi. i).— The leopard moth was dis- 

 covered in 1910 bormg into the stems or trunks of apple trees in a Connecticut 

 fruit-tree nursery, not far from the coast. 



Note on the cork-colored orange tortricid (Platynota rostrana), E. R. 

 Sasscer (Jour. Econ. Ent., 4 {1911), No. 3, pp. 297, 298).— In 1909 this pest 

 damaged some 15 per cent of the grapefruit in a grove at Key Largo. Fla. 



Notes on the egg-laying' habits and emergence of adult of Sanninoidea 

 exitiosa, E. N. Cory (Jour. Econ. Ent., 4 (1911), No. 3, pp. 332-336, pi. 1).— 

 Observations made at College Park, Md., are reported. 



Ehopalomyia grossulariae n. sp., E. P. Felt (Jour. Econ. Ent., 4 (1911), 

 No. 3, p. 347). — This new species was reared in May, 1911, at the Ohio Station 

 from deformed gooseberry buds (Rihes grossularia) . 



Pruit flies and other insects attacking cultivated and wild fruits in New 

 South Wales, W. B. Gurney (Agr. Gaz. N. S. Wales, 22 (1911), No. 8, pp. 

 722-727, pis. 2, figs. 2). — ^This second paper deals with the Queensland fruit fly, 

 its prevalence, the sequence of orchard and wild fruits attacked, and the extent 

 of parasitism. The new parasite mentioned in the previous account (E. S. R., 

 24, p. 356), Opius tyroni, has been found to destroy from 4 to 52 per cent of 

 the Queensland fruit flies developing in wild fruit. Only one parasite develops 

 from a single maggot. This parasite occasionally infests maggots in orchard 

 fruits and cage experiments have shown that it will also attack the Mediter- 

 ranean fruit fly. 



Transmission of disease by native blood-sucking insects, A. Schubeeg and 

 P. KuHN (Arl). K. Gmdhtsa7nt., 31 (1911), No. 2, pp. 377-393; als. in Bleeping 

 Sickness Bur. [London] Bui., 3 (1911), No. 26, pp. 162-164). — In this paper the 

 authors deal with the role of the stable fly (Stomoxys calcitrans) in the trans- 

 mission of trypanosomes and spirochetes. Previous attempts to transmit nagana, 

 suri'a, jinja cattle disease, debab, souma, dourine, and sleeping sickness by 

 means of 8. calcitrans are reviewed. In experiments in which Trypanosoma 

 Itrucci, T. equiperdum, T. garnbiense, and T. lewlsi were used, all but T. lewisi 

 were mechanically transmitted to healthy animals by the stable fly. 



A bibliography of 34 titles is appended. 



Further researches on the development of Trypandsoma garnbiense in 

 Glossina palpalis, D. Bruce et al. (Proc. Roy. Soc. [London], Ser. B., 83 

 (1911), No. B 567, pp. 513-527, figs. SO).—" In the course of the development of 

 T. gamhiense in G. palpalis the proboscis does not become involved, as in the 

 case of some other species. A few days after an infective feed the trypano- 

 somes disappear out of the great majority of the flies, but in a small percentage 

 this initial disappearance is followed by a renewed development. After a very 

 short time the flies which have fed on an infected animal become incapable of 

 conveying the infection by their bites, and this noninfectivity lasts for some 28 

 days, wheu a i-enewed or late infectivity takes place. A fly in which this re- 

 newed or late infectivity occurs can remain infective for at least 96 days. An 

 invasion of the salivary glands occurs at the same time as this renewal of 

 infectivity, and without this invasion of the salivary glands there can be no 

 infectivity. The tyiie of trypanosome found in the salivary glands when the fly 

 becomes infective is similar to the short stumpy form found in vertebrate blood, 

 and it is believed that this reversion to the blood-type is a sine qua non in the 

 infective process." 



