HANCOCK 171 



present position then. She works rather slowly, probably by reason of the 

 fine roots of the lichens impeding the ovipositor. The male shifts his 

 position occasionally, but remaining passive most of the time, still retaining 

 his hold on her back. There is every evidence that he is cognizant of the 

 female's performance. At 10 o'clock, one hour after my first observation, 

 1 saw the female withdraw her abdomen from its position in the ground. 

 The male, still keeping on her back, now becomes more active, endeavoring 

 conjugation by extending the end of the abdomen below hers, and protrud- 

 ing the folds from within the genital aperture, while she, with some slight 

 motion, still standing almost over the same spot, does not seem to join in his 

 advances. Now they jump apart (10:18 a. m.). The male's pronotum 

 extended beyond the posterior knee and the wings were as long as the 

 process. The pronotum was a dull earth color, only slightly ornate. The 

 female is of thebilineate type, but less vividly marked than some specimens. 

 After the female had left the spot the eggs could be discerned, barely show- 

 ing their pointed extremities projecting upward at the opening of the bur- 

 row, almost hidden by the thick growth of lichens. May 9, 1898. 



From these eggs, which were deposited May 9, I saw larvae emerge 

 June I, or twenty-three days after. The place of ovipositing was marked 

 by a little tag, as is customary with me in carrying out my observations. 



HATCHING OF TETTIX ORNATUS, TWELVE IN THE BROOD 

 — TIME OF TAKING ON PIGMENTATION WAS HALF AN 

 HOUR. 



At six minutes past ten a. m., on looking in my breeding jar, I saw three 

 Tettix ortuitus larvEe emerging from a hole in the lichens. They are pale 

 white, somewhat translucent, with the exception of the eyes. One at a time 

 several more follow. After a lapse of four minutes two more come out, 

 the eighth and ninth in their order, all grouped within a space of an 

 inch. Now, startled by the sudden presence of an adult specimen leaping 

 near, one jumped two and a half inches, or thirty-five times the length of its 

 own body. This little performer was five minutes old. 



At seventeen minutes past ten the tenth appears and now they are 

 scattering still farther away from the burrow. A few moments intervene 

 and then the eleventh emerges. Now, twelve minutes after the first was 

 hatched, the color begins to alter a little. The eleventh up to this time 

 has not entirely freed itself of the amnion, which is being thrown off behind. 

 At the same time a twelfth specimen is appearing, the little head showing 

 at the opening at the level of the ground surface ; a moment later its forelegs 

 are strenuously waving and free and it is making an effort to draw itself up. 

 At 10:29 o'clock this specimen has its head out, immediately afterwards 

 comes its body. They have all left the site but this one. 



The first hatclied of the brood have become appreciably clouded or 

 opaque at twenty-four minutes of eleven. Looking around one sees the indi- 

 viduals quietly resting on the ground, except one which has crawled up 

 the stalk of a little plant. None are eating. At twenty minutes to eleven 

 the first hatched are almost invisible, changing to grayish, and it becomes 

 difficult to follow them with the eyes. Complete transformation of color 



