266 



species of older countries. Much of the matter is, however, new, and 

 indicates considerable original investigation on the part of the author. 



In this connection we will call attention to the very full account of the 

 Fruit-fly, TephriUs sp., an insect closely allied and of similar habits to 

 our Trypeta pomonella, but much more injurious and apparently the most 

 serious fruit pest of the district. It infests not only the Apple and allied 

 fruits but also the various stone and citrus fruits. 



In connection with the excellent account of the Cottony Cushion- 

 scale, a recognizable description without name is given of a hymenop- 

 terous i)arasite. This is the first published reference to a hymeuopter- 

 ous parasite of Icerya in Australia, and we have no difliculty in con- 

 necting the description with a species recently sent us by Mr. Crawford 

 and which we described in the last number of Insect Life as Ophelosia 

 ^raivfordi. 



These and other interesting features of the work which might be 

 Ijointed out will give it a value to all engaged in entomological work. 



SOME INSECT PESTS OF THE HOUSEHOLD. 



C. V. Riley. 

 [Continued from page 215.] 



IV. — COCKROACHES. * 



Fig. 57. — The Croton Bug or German Cockroach (Phyllodromia germaniea) : a, first stage; b, second 

 stage ; c, third stage ; d, fourth stage ; e, adult ; /, adult female with egg-case ; g, egg-case— en- 

 larged ; h, adult with wings spread— all natural size except g. (After Riley. ) 



The cockroaches which commonly annoy the American housekeeper 

 comprise three species, one only of which is indigenous, and this the 

 least harmful of the three. It is the " roach " or " black-beetle " of New 

 England, and is known to science as Periplaneta americana. It measures 

 from an inch and a quarter to an inch and three-quarters in length. Its 

 thorax is yellowish with brown mottliugs and its autennte are excep- 

 tionally long, reaching considerably beyond the tips of the closed wings, 



* Reprinted substantially from Good Housekeeping, June 8, 1889. 



