Aftnals Entomological Society of America [Vol. XI, 



SUMMARY. 



1. The embryos of the honeybee afford plain evidence of the 

 presence of 12 segments in the abdomen, (assuming the presence 

 of a telson), the 11th abdominal segment being represented by 

 its sternite and by the rudiment of a pair of ganglia. 



2. In newly hatched larvae the last three abdominal ganglia, 

 including the rudimentary 11th abdominal, unite to form a 

 compound ganglion situated in the 9th abdominal segment. 

 As the larva grows older the compound terminal ganglion and 

 the ganglion of the 8th abdominal segment move closer together 

 and both come to lie in this segment. In mature larvae (4-5 

 days old) the ganglion of the 8th abdominal segment finally 

 becomes incorporated in the terminal compound ganglion, 

 which has then the same composition, as regards number of 

 ganglia, as the terminal ganglion in the imaginal ventral nerve 

 cord. 



LITERATURE CITED. 

 Buetschli, O. 1870. Zur Entwicklungsgeschichte der Biene. Ztschr. Wiss. Zool. 



XX, 4, pp. 519-564. Mit Tafel XXIV-XXVII. 

 Carriere, Justus, und Buerger, Otto. 1897. Die Entwicklungsgeschichte der 



Mauerbicne (Chalcidoma muraria Fabr.) im Ei. Abhandl. K. Leopold, 



Carolin. Deut. Akad. Naturf. LXIX, 2, pp. 253-420. Mit 13 Tafel. 

 Graber, Veit. 1890. Vergleichende Studien am Keimstreifen der Insekten. 



Denkschr. Math-Naturwiss. Kl. Kais. Akad. Wiss. Wien. LVII, pp. 621- 



734. Mit 12 colorirten Tafel und 38 Textfiguren. 

 Grassi, Battista, Dr. Prof. 1882-4. Studi sugli atropodi. Intorno alio sviluppo 



dell Api neir uovo. (Letta nella seduta ordinaria del 2 Marzo 1884). 



Atti deir Academie Gioenia di scienze naturali in Catania. Serie 3, Vol. 



XVIII, pp. 154-222. Tav. I-X. 

 Heymons, Richard. 1895. Die Embryonalentwicklung von Dermapteren und 



Orthopteren unter besonderer Berucksichtigung der Keimblatterbildung. 



Monograpisch bearbeitet. Mit 12 lithographischen Tafeln und 33 Abbil- 



dungen in Text. Jena. 

 — . 1895a. Die vSegmentirung des Insektenkorpers. Anhang zu Abhandl. 



Akad. Wiss. Berlin, pp. 1-39. Mit einem Tafel. 

 . 1896. Grundzuge der Entwicklung des Korperbaues von Odonaten 



und Orthopteren. Anhang zu Abhandl. Akad. Wiss. Berlin, pp. 1-66. 



Mit. 2 Tafeln und einem Textfigur. 



1897. Entwicklungsgeschichtliche Untersuchungen an Lepisma 



saccharina L. Ztschr. Wiss. Zool. LXII, 4, pp. 583-631. Mit Tafel XXIX- 



XXX und 3 Figuren im Text. 

 Hirschler, Jan. 1909. Die Embryonalentwicklung von Donacia crassipes L. 



Ztschr. Wiss. Zool. XCII, 4, pp. 627-744. Mit 15 Figuren im Text und 



5 Tafeln. 

 Nelson, James Allen. 1915. The embryology of the honeybee. Princeton 



Univ. Press, pp. 1-282. With 94 text figures and 6 plates. 

 Snodgrass, R. E. 1910. The anatomy of the honey bee. Tech. Ser. No. 18, 



Bur. Ent. U. S. Dept. Agric. Wash. D. C, pp. 1-162. With 57 text figures. 

 Wheeler, William Morton. 1889. The embryology of Blatta germanica and 



Doryphora decemlineata. Jour. Morph. Ill, 2, pp. 291-384. Plates XV-XX, 



16 text figures. 

 . 1893. A contribution to insect embryology. Jour. Morph. VIII, 



1, pp. 1-160. Plates I-VI and 7 text figures. 



