306 KANSAS UNIVERSITY SCIENCE BULLETIN. 



ventral side up. All the eumenids suspend their eggs by fila- 

 ments from the cell wall. A single individual of 0. dorsalis 

 violated this rule, possibly accidentally, by attaching an egg to 

 the caterpillar. When floating on water or at work elsewhere 

 a eumenid's wings are always held open and at oblique angles 

 to its thorax; it is always in position to take flight at any 

 moment. 



These habits were conspicuous among the activities of the 

 wasps that I observed, because of their uniformity both among 

 the species and the individuals. To me they have seemed to be 

 invariable characteristics of the Eumenidse. 



BIBLIOGRAPHY. 



AXFHEN, G. 



1892—0. murarius; habits. Ent. Nachr. XVIII, p. 270. 



ASHMEAD, W. K. 



1894 — Habits of Eumenidae. Psyche, pp. 76 to 78. 

 1897 — O. albophalertus. Psyche, p. 335. 



AURIVILLIUS, C. 



1886 — 0. murarium; nests, habits, and metamorphoses. Bit So. Ak. 



Handl. XII, pp. 4-5. 

 1888—0. murarius. Oefi. Ak. Tork, p. 608. 

 ■ 1888—0. bifaciatus. Oefi. Ak. Tork, p. 610. 



1905 — Vespidffi and Eumenidse of Sweden. Ent. Tedskr. XXVI, pp. 

 209-232. 



Alderz, Gottfrid. 



1907 — Eumenes coaretata; habits. Ark. Zool. Ill, No. 17, pp. 1-3. 

 1907 — O. murarius and O. bifaciatus; habits. Ark. Zool. VII, No. 17, 

 pp. 39-53. 

 Berg, C. 



1900 — Apuntes sobre das expecies del genero Odynerus de la Tierra 

 del Fuego. Comm. Mus. Buenos Aires, pp. 232-240. 



BiGNELL, G. C. 



1881 — O. pictus; note on nest and larvas. Ent. XIV, pp. 188-189. 

 1882 — O. pictus; transformations noticed. Ent. XIV, p. 164. 



BiLLUPS. 



1883—0. reniformis; note. Ent. M. M. XVI, pp. 68-69. 



Bingham, C. T. 



1889 — E. conica; habits. J. Bombay Soc. XII, p. 585. 



BONNEFOIS, A. 



1894 — E. pomiformis; habits of larvae. Ann. Ent. Soc. Pr., pp. 8-11. 



BORKIES. 



1897 — A. ovivantris. Natural history, Vid Medd, pp. 160-163. 



Brethes, J. 



1902 — O. argentinus; nesting habits. Revist. Mus. La Plata X, p. 

 204, pi. I. 



