858 Pomona College Journal of Entomology 



UBER DIE KOFFDRUSEN EINIGER NIEDEREN ORTHOPTEREN 



SERGIUS SUSLOV 



Zool. Jahrb. Bd. XXXV, H. 1, 1912. 



Tliis is not only a study of the glands in Orthoptera but a consideration 

 as well of tlie comparative anatomy of these organs in both insects and rayria- 

 pods. It is illustrated by three plates. 



UBER DIE MORPHOLOGIE DER HETEROPTEREN UND 

 HOMOPTERENSTIGMA 



HEINO MAMMEN 



Zool. Jahrb. Bd. XXXV, H. 1, 1912. 

 Diagrams are given showing the anatomy and mechanism of these open- 

 ings, and the conditions in a large number of species as figured and described. 

 Stigma were found with one, two and three muscles. 



ZUR BIOLOGIE UND MORPHOLIGIE EINIGER PERLA-ARTEN 



VON EDWARD SCHOENEMUND 



Zool. Jahrb. Bd. XXXV, H. 1, 1912. 



In this article is given first a short description of the life conditions of 

 Perla and then a more extended account of the morphology of each of the 

 three largest species, the Ferla marginata, Perla maxima, and the Perla cepha- 

 lotes. The tracheal system is of special significance. It appears in six brush- 

 like appendages on the sides of the thorax and two on the inner side of the 

 base of the cerci. 



The writer believes Perla to be a very ancient insect group because of 

 the simple structure of the body, the equal development of the abdominal 

 segments and especially because of the long caudal appendages. 



Edith McConnell. 



THE LACINIA IN THE MAXILLA OF THE HYMENOPTERA 



ALEX. D. MAC GILLEVEAY 



Ann. Ent. Soc. of Am., September, 1912. Vol. V, No. 3. 

 The lacinia were found to be present in the maxilhe of practically all the 

 Hymenoptera examined. The only exception found was in the short tongued 

 bee, Augochlora. 



ANATOMY OF THE TOMATO-WORM LARVA, PBOTOPARCE 



CAROLINA 



ALVAH PETERSON 



Ann. Ent. Soc. Am. Vol. V, No. 3, 1912. 

 This is a consideration of the external and internal structure. It includes 

 three plates of line cuts Illustrating: digestive, respiratory, muscular and 

 nervous systems. 



