a()() PROCEEDINGS OF THE NATIONAL MUSEUM. vol. xxxii. 



seem perfectly void of fear, climbing all over one's person unless per- 

 sistently brushed off. The usual chirps of the male are uttered in 

 regular and rather slow succession, averaging between IH) and 100 

 beats a minute; when disturbed they stridulate sharply and more 

 rapidl}", with a decided angr}- tone. Like Anahrux this insect is omniv- 

 orous and shows the same decided cannibalistic tendencies, seeming 

 especially fond of its own kind as an article of diet. Crops from 

 specimens having fed on vegetable matter were filled with a green 

 pasty mass, quite readily distinguished from the brown pulpy mass 

 resulting from cannibalistic feasting. 



Migrating bands seem to begin moving late in the afternoon, the 

 fore part of the day being occupied in sitting still or walking aimlessly 

 about. When traveling they move closely massed, a cricket to nearly 

 ever}" scjuare inch of space, about fifteen crossing a giv^en point every 

 minute. 



The mating habits are thus described \)x Snodgrass: 



From about 10 o'clock until noon mating takes \)\a,cQ between the males and 

 females. During this act the male is beneath the female. The former while court- 

 ing the female chirps continually with his wings, and, advancing backwards and 

 obliquely sideways towards the female from in front, tries to push his abdomen 

 beneath hers. Sometimes the female makes no resentment, but often the male has 

 his patience sorely tried. One was observed for twenty minutes attempting to make 

 a female accept him before she finally did so. 



Although the male is the active party during courtship the fertilization of the 

 female depends on an act of her own. The ovipositor is directed downward, or its 

 tip braced against the ground; the opening of the bursa copulatrix behind the eighth 

 sternum is then brought against the tip of the male's abdomen. After about five 

 minutes a large white mass of tough albuminous matter is ejected by the male into 

 the bursa copulatrix of the female. The pair then separate, but the white mass 

 hangs from the abdomen of the female as a large bilobed appendage, and apparently 

 causes her nuich annoyance. 



It is not evident what the function of this albuminous mass is, but it looks like 

 simply a plug to close the bursa copulatrix. In the male a great mass of tubular 

 accessory glands open into the ejaculatory duct, and it must be these glands that 

 secrete the albuminous mass. The female often keeps the tip of her abdomen 

 elevated to prevent the mass from dragging on the ground, for, being sticky when 

 fresh, it becomes covered with bits of leaves and grains of sand. She attempts to 

 rid herself of it by bending her head beneath the abdomen and chewing it off. 

 Others assist her by eating at it until, after a short time, it is gone. Seldom is one 

 seen in the afternoon with the mass adhering, while it is commonly present on 

 females in the morning between 10 and 12 o'clock. No cases of mating were ever 

 observed in the afternoon. 



It will be noted that the seminal sac as described by Gillette under 

 Anabrus siinple.c and the albuminous mass as descrilied above ))y Snod- 

 grass are analogous, and the mating habits of the two insects are ver}^ 

 similar. The Qgg laying seems to be principally carried on in the 

 late afternoon. It is thus described by Snodgrass: 



At about 5 o'clock the females begin laying eggs, and continue to do so until late 

 in the evening. While ovipositing the female most commonly assumes an upright 



