791 



4011 



Economics. 



Brick, C. Die von ScLildlausen 

 erzeugten Haudelsprodukte. Hamburg, 

 Verh^natw. Ver., (3 Folge), 8, (1900), 

 1901, (XXI-XXII). [4019 4031 

 M 4100.] 



Froggatt, W. W. Aphis persicae majov 

 Sm. and Xysius vinitor as wheat pests. 

 Agric. Gaz., Sydney, N.S.W., 12, 1901, 

 (350-356, with 2 pi.;. [4019]. 



Larbaletrier, A. Destruction du 

 puceron ianigere [Schizoneura lanigera]. 

 Nature, Paris, 29, 1901, (Ir semest.), 

 (394-395). [4019 4031]. 



Marlatt, C. L. The scale insect and 

 mite enemies of Citrus trees. Washing- 

 ton, D.C., Yearbook U.S. Dept. Agric, 



1900. 1901, (247-290, with 16 pi.) ; 

 [review], Washington, D.C., U.S. Dept. 

 Agric, Off. Exp. Sta., Rec, 13, 1901, 

 (266j. [4019 4031]. 



Noel, P. Le Kermes coquille de moule 

 {Mytilaspis pomorinn), ennemi des 

 poiriers. Naturaliste, Paris, (ser. 2), 23, 



1901, (33). [4019 4031]. 



Le puceron du j^^cher 



{Aphis persicae). Natiiraliste, Paris, 

 (ser. 2), 23, 1901, (54-55). [4015 4019 

 4431]. 



Zehntner, L. Pflanzenlause des 

 Zuckerrohrs. (Hollandisch) Arch. Java 

 Suiker., Soerabaia, 9, 1901, (673-694, 

 mit 2 pL). [4019 4031 M 4100 

 6000]. 



History, 



CockereU, T. D. A. Coccidae. Earlier 

 writers. Entomologist, London, 34, 

 1901, (90-93). [4031]. 



4007 STRUCTURE. 



General. 



Imhof, Othm. Em. Bau der Cicaden. 

 Biol. Centralbl., Berlin, 21, 1901, (735- 

 736). [4031]. 



Mordvilko, Aleksandr. Zur . , . 

 JMorphologie der Pflanzenlause (Earn. 

 Aphididae.Fass.) (Russ.) Theil II und 

 III. St. Peterburg, Hor. Soc. Ent. Ross., 

 33, 1901, (1-84, 162-1012, 29 Fig.). 



Sasaki, Chujiro. . , . Female of 

 Coccus pela L. . . . (Japanese). Dobuts. 

 Z., Tokyo, 13, 1901, (349-352). 



Description of the Japan- 

 ese species allied to tlie San Jose scale 

 in America. Annot. Zool. Jap., Tokyo, 

 3, 1901, (165-173 with pi.). 



Special Glands. 



Voronkov, N. V. Ueber den Bau der 

 Riickendrusen bei den Larven von 

 Acanthia lectularia. (Russ.) St. Peter- 

 burg, Dnevn. XI Sjezda russ. jest, vrac., 

 20-30 XII, 1901, (135). 



Special External Characters. 



Hansen, [External structure of 

 Homoptera.] [TransL] Entomologist, 

 London, 34, 1901, (149, etc.). 



4011 PHYSIOLOGY. 



Paedogenesis. 



Reh, L. Ueber die postembiyonale 

 Entwickelung der Schildlause imd In- 

 sekten-MetamorjDhose. Allg. Zs. Ent., 

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Hermaphroditism. 



Cholodkovskij , N. A. Ueber den 

 Hermaphroditismus bei Cherme8-A.rten. 

 (Russ.). St. Peterburg, Dnevn. XI 

 Sjezda russ. jest, vrac., 20-30 XII, 1901, 



(78). 



Chemical Physiology. 



Sundwik, Ernst Edw. Ueber Psylla- 

 wachs, Psyllostearylalkohol und Psyl- 

 lostearylsaure (Psyllaalkohol, Psylla- 

 saure). 3. Mittheilung. Hoppe-Seylers 

 Zs. physiol. Chem., Strassburg, 32, 1901, 

 (355-360). [D 1350 1250 Q 1510 

 1605]. 



Function of Special Structures. 



Porta, A. La secrezione deUa spuma 

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 [4019 4031]. 



