40 Psyche [April 



between September 15 and October 15 from nearby plants, no 

 parasitized aphids were found earlier than the dates mentioned 

 above. The aphids were on the roots of Muhlenbergia and rather 

 near the surface; that is about a half inch below the surface of the 

 ground. The coiled and twisted worm was visible within the body 

 of the aphid but after clearing and mounting in balsam it became 

 much more distinct. The accompanying illustration, kindly drawn 

 for us by Dr. Henry Fox, is a very characteristic likeness of the 

 nematode worm within the body of the aphid. The nematode 

 proved indeterminable and it is not unlikely that the aphid is 

 simply an intermediary host. 



We know of but one other record of a nematode infesting an 

 aphid. Dr. G. Del Guercio, on page 205 of Nuove Relazioni of the 

 Royal Station of Agricultural Entomology of Florence (Vol. I, 

 1899), records a nematode as one of the natural means which limits 

 the diffusion of Trama radicis Kaltenbach, a root aphid, and on 

 the following page gives a simple outline drawing of the nematode 

 worm. 



SOME NEW FORMICID NAMES. 



By William Morton Wheeler, 

 Bussey Institution, Harvard University. 



Forel's discovery, in 1913, that the East Indian ant, long known 

 under the name of Aphcrnogaster (Ischnomyrmex) longipes F. 

 Smith (1857), is really a Pheidole, and the type of the subgenus 

 Ischnomyrmex, makes it necessary to change the name of Pheidole 

 longipes Pergande (1895) of southern California and Mexico. I 

 would propose for the latter the name Pheidole grallipes nom. nov. 



Owing to the fact that I was unable to receive any proof, my 

 recent paper on the ants collected by Capt. S. A. White in Central 

 Australia (Trans. Roy. Soc. South Austr. 39, 1915) contains two 

 unfortunate errors. The name Polyrhachis {Campomyrma) lon- 

 gipes (p. 821), applied to one of the new species, is preoccupied by 

 that of Polyrhachis longipes described by Frederic Smith in 1858 

 from the Aru Islands. I would, therefore, change the name of 

 the Australian species to P. (C) macropus nom. nov. 



Examination of several fine series of Camponotus (Myrmophyma) 



