_Pycnoscelus surinamensis_, Hawaii (Illingworth, 1915): During the summer the soil was literally swarming with young of various stages. Early in September most of the adults were dead and all were covered with mites. U.S.A., Connecticut, in laboratory (Zappe, 1918a). Hawaii, in laboratory (Schwabe, 1950): Some of the cockroaches apparently died from mite infestations. [Illustration: FIG. 4.--The cockroach mite, _Pimeliaphilus podapolipophagus_. (From Baker et al. [1956]; reproduced through the courtesy of Dr. E. W. Baker and the National Pest Control Association.)] Cockroach, England? (Ealand, 1915): Cockroaches may carry the hypopial stage of the cheese mite. CONTROL OF MITES IN COCKROACH COLONIES Fisk (1951) eliminated the mites [possibly _Pimeliaphilus podapolipophagus_ (Baker et al., 1956)] in his cockroach colony by using a 5-percent spray and a 5-percent dust of p-chlorophenyl, p-chlorobenzene sulfonate. The exterior of the cockroach containers were sprayed with the solution and the interior, including the insects, were dusted. Within a month the mites had disappeared and the vigor of the cockroach colony improved. Piquett and Fales (1952) used flowers of sulfur and general sanitary procedures for eliminating the mites in laboratory colonies of _Blatta orientalis_; they cleaned the dishes every few days and applied grease around the edges of the containers to prevent new mite invasions. Qadri (1938) employed similar control measures. Class CHILOPODA Large centipedes which entered houses in India probably sought out cockroaches (Maxwell-Lefroy, 1909). In Puerto Rico, centipedes entered homes to which they were attracted by cockroaches (Seín, 1923). In Hawaii, centipedes preyed on insects generally but especially on cockroaches (Bryan, 1915). Sonan (1924) reported that in Formosa and Okinawa Islands a species of centipede 5 to 6 inches long comes into the houses and devours both adults and nymphs of _Periplaneta americana_ or _P. australasiae_. Zimmerman (1948) found _P. australasiae_ breeding by scores in rock piles in Hawaii accompanied by large numbers of _Scolopendra_ and large spiders that probably preyed upon the cockroaches. Order SCUTIGEROMORPHA Family SCUTIGERIDAE =Scutigera coleoptrata= (Linnaeus) _Synonymy._--_Scutigera forceps_ Rafinesque [Crabill, 1952]. _Common name._--House centipede. _Natural prey._--Cockroaches, U.S.A. (Felt, 1909; Back, 1947; Auerbach, 1951; Crabill, 1952; and others): This predator-prey relationship seems to be based on good circumstantial evidence (Crabill, personal communication, 1953). _Experimental prey._--_Blattella germanica_, newly hatched nymphs and adult female, U.S.A. (Snodgrass, 1930; Roth and Willis, unpublished data, 1953). _Periplaneta americana_, U.S.A. (Roth and Willis, unpublished data, 1953). _Supella supellectilium_, U.S.A. (Roth and Willis, unpublished data, 1953): See plate 31.