A SELECTED BIBLIOGRAPHY OF THE COCCOIDEA 189 



Schmutterer, H. — Continued. 



1952a UBER DREI NEUE AN GRASERN LEBENDE SCHILDLAUSARTEN DER DEUT- 



SCHEN fauna. Beitr. z. Ent. 2 : 554-566, illus. 

 Rhodania occulta, Trionymus singularis n. spp., notes on T. aberrans. 



1952b ZUR KENNTNIS DER SCHILDLAUSFAUNA BAYERNS (HOMPT., COCCIDEA). 



Nachrichtenbl. der Bayer. Ent. 1 : 14-15, 18-21. 

 Reports 49 species for the Bavarian fauna, none new. 



1954 ZUR KENNTNIS EINIGER WIRTSCHAFTLICH WICHTIGER MITTELEUROPAI- 



SCHER EULECANIUM-ARTEN (HOMOPTERA: COCCOIDEA: LECANIIDAE). 



Ztschr. f . Angew. Ent. 36 : 62-83, illus. 

 A detailed classificatory study of 4 common Eulecaniums — avion, 

 corni, crudum, pulchrum. 



1955 NEUE BEITRAGE ZUR DEUTSCHEN COCCIDENFAUNA ; ZUR SCHILDLAUSFAUNA 



der nordlichen kalkalpen. In Bericht iiber die 7. Wanderver- 

 sammlung Deutscher Entomologen Berlin 1954, 220 p. (159-164), 

 illus. (H. Sachtleben, comp.) 



Luzulaspis montana n. sp.; brief general notes on the occurrence of 



several other coccids. 



1955a bemerkenswerte schildlausfunde in sud-und sudwestdeutsch- 

 land (homopt., coccidea). Nachrichtenbl. der Bayer. Ent. 4 (10) : 

 98-102. 

 New collection records for 17 German coccids. 



Schneider, A. 

 1885 die entwicklung der geschlechtsorgane der insekten. Zool. Beitr. 

 Breslau 1: 257-300 (276-278). 

 Brief mention of 3 coccid genera in discussion; description of female 

 reproductive system of Coccus adonidum. 



SCHRADER, P. 



1921 the chromosomes of PSEUDOCOCCUS nipae. Biol. Bui. 40: 270, illus. 

 Reviewed by Nachtsheim in Archiv. f. Zellforsch. 17: 102-103, 1923. 



1923 A study of the chromosomes in three SPECIES OF PSEUDOCOCCUS. 

 Arch, f . Zellforsch. 17 : 45-62, illus. 

 Descriptions for Pseudococcus citri, maritimus, nipae. 



1923a THE SEX RATIO AND OOGENESIS OF PSEUDOCOCCUS CITRI. Ztschr. f. 



Induktive Abstam. u. Vererbungslehre 30: 163-182, illus. 

 Sexes found approximately equal; cytological development of egg. 



1923b THE ORIGINAL OF THE MYCETOCYTES IN PSEUDOCOCCUS. Biol. Bui. 45: 



279-302, illus. 



1929 EXPERIMENTAL AND CYTOLOGICAL INVESTIGATIONS OF THE LIFE CYCLE OF 



GOSSYPARIA SPURIA (COCCIDAE) AND THEIR BEARING ON THE PROBLEM 



of haploidy in males. Ztschr. f. Wiss. Zool. 134: 149-179, illus. 

 Fertilization required for development; egg cytology described. 



1929a notes on reproduction in aspidiotus hederae (coccdjae). Psyche 

 26: 232-236, illus. 

 Insects investigated were parthenogentic; suggests probability of 2 

 races in species, one producing males. 



1930 observations on the biology of protortonia primitiva (coccidae). 



Ent. Soc. Amer. Ann. 23 : 126-132. 

 Discusses mating, egg laying, devolpment to maturity, sex ratio. 



1931 the chromosome cycle of protortonia primitiva (coccidae) and a 



consideration of the meiotic division apparatus in the male. 

 Ztschr. f. Wiss. Zool. 138: 386-408, illus. 



1944 mitosis, the movements of chromosomes in cell division. New 

 York, Columbia Univ. Press. 110 p. (4, 9, 17, 18, 25, 31, 35, 48, 71). 

 Research work on the coccid family and on 6 coccid genera cited in 

 various phases of the discussion. 



