604 



ambignella], Phylloxera, etc. [cf. R.A.E., A, i, 524]. In 1914 a bacillus, 

 which has not yet been identified, was found apparently living 

 symbiotically with /. densa in a cockchafer larva. Mixed cultures of 

 these organisms were used against cockchafers and against the peach 

 aphis. The insects were rapidly killed, and this bacillus is believed 

 to be extremely virulent and to cause death in less than 24 hours. 



Fetch (T.). Studies in Entomogenous Fungi. — Trans. Brit. Mycol. 

 Soc, Cambridge, vii, pts. 2 & 3, 1921, pp. 89-167, 3 plates. 

 [Received 14th November 1922.] 



The most important entomogenous fungi known to develop on 

 Coccids are the Nectriae, and the}^ are the ones most generallv used 

 in the numerous attempts to reduce the numbers of scale-insects by 

 this method. The present paper deals systematically with them, and 

 a list is given of all the species, or their probable conidial stages, that 

 have been recorded on Coccids. 



Microcera spp. occur on many species of Coccids in the tropics ; 

 Pseiidomicrocera spp. have been recorded on Lepidosaphes, Aspidiotus, 

 Fiorinia, Aonidia, etc. ; among the species of Sphaerostilbe, S. cocci- 

 dophthora occurs on Lepidosaphes sp. and Parlatoria zizyphi , Neciria 

 diploa occurs on Fiorinia rubrolineata and Lepidosaphes sp.; N .coccophila 

 on Aspidiotus perniciosus and Diaspis pentagona ; A'', barbata, sp. n., 

 and N. tubercidariae on Lepidosaphes sp. ; Lisea parlatoriae on Parla- 

 toria zizyphi ; Calonectria coccidophaga on Planchoma acaciae ; Podo- 

 ■nedria coccicola on L. beckii, L. glover i and Parlatoria zizyphi ; P. 

 mirantii on Parlatoria zizyphi and others ; P. echinata, sp. n., on 

 Lepidosaphes sp. ; Broomella ischnaspidis on Lschnaspis longirostris 

 {filiforynis) ; and Fusarium epicoccum on Aspidiotus aurantii. 



CocKERELL (T. D. A.). The Mealy-bug called Pseudococcns bromeliae, 

 and other Coccids. — Science, Garrison, N. Y., N.S., Ivi, no. 1446, 

 15th September 1922, pp. 308-309. 



The author questions the validity of the name, Pseudococcus bromeliae, 

 Bch., as applied to the species of mealy-bug found on Tachigalia 

 [K.A.E., A, X, 348]. He thinks that there is little doubt Bouche 

 had the Lecaniid, Saissetia hemisphaerica, Targioni, 1867, before him. 

 Bouche' s original description is dated 1834, whereas already, in 1778, a 

 different species had been described as Diaspis (Coccus) bromeliae, 

 Kern., making Bouche's name unavailable.* 



The Lecaniid recorded by W. E. Britton as Toumeyella liriodendri, 

 Gmelin, from the tulip tree [R.A.E., A, x, 333], is considered to be 

 T. tulipiferae. Cook. 



The author also does not agree with the adoption of the name 

 Pseudococcus adonidum, L., for the common long-tailed mealy-bug, 

 P. longispinus, Targ. 



The application of the generic name Coccus, L., to the soft scales 

 may have to be reconsidered. The original Coccus (the word meaning 

 a berry) was the hard round scale of the oak, commonly called Kermes, 

 and under the rules a good argument can be made for considering 

 Kermes ilicis, L., the type of Coccus. 



* [Mr. F. Laing, of the British Museum, informs us that the date of Coccus 

 bromeliae, Bch., is 1833, not 1834, and that Kerner's species was described as 

 Coccus bromelia. He also points out that according to Prof. Cockerell brevipes, 

 Ckll., is the same as bromeliae, auct., and that this would be the next available 

 name for this insect. — Ed.]. 



