176 TETTIGID.E OF NORTH AMERICA 



the ground. The male has turned about, trying conjugation, exerting 

 himself to the utmost to unite, reaching below her ovipositor to one side. 

 Doubtless she is unfavorably impressed; she struggles slightly with her 

 hind legs to be relieved. During the male's attempt at coupling the 

 protruding and withdrawing of the organ copulatrix is attended with the 

 escape of seminal fluid. At 11:14 a. m. they separate. The points of the 

 eggs are now visible in the little hollow between the lichens. May 10, 1898. 



OVIPOSITION OF TETTIX TRIANGULARIS — ELEVEN EGGS 

 LAID — HOW SHE COVERS THE EGGS — COLOR OF THE 

 NEWLY LAID EGGS PINKISH WHITE. 



At seven minutes of eleven o'clock another Tettix triangularis female 

 came under observation. I saw her select a place and gradually sink her 

 ovipositor and abdomen in the ground between the damp lichens. At 12 

 o'clock she withdrew the ovipositor, and in a skillful manner used first one 

 hind leg, then the other, scraping up little particles of dirt (with the tarsi), 

 with which she covered her eggs. This process lasted eight minutes, after 

 which she walked away from the spot to go about eating. Parting the soil, 

 I found the egg mass containing eleven eggs neatly secreted in the little 

 excavation between the compactly growing mosses. The eggs were agglu- 

 tinated together at the sides into a solid egg-mass, with the pointed ends 

 upward, and were a beautiful pinkish white color. May 24, iSgS. 



TETTIX ORNATUS COVERS HER EGGS, OVIPOSITING LAST OF 



JUNE. 



At five o'clock p. m., a specimen of Tettix ornatus is laying eggs. The 

 same specimen has laid eggs before. She is grayish, with side lines 

 (bilineate) on the pronotum, and has the wings fully developed. I saw her 

 act uneasy before selecting the present site. From the other ornatus 

 examples in the jar she is distinguished by the grayish color, the others 

 being rather purplish brown. At 5:30 she took out her ovipositor and 

 is engaged in covering the hole as previously described in the preceding 

 form, triangularis. The hole was made in black muck. June 29, i8g8. 



TETTIX TRIANGULARIS OVIPOSITING THE LAST OF JUNE- 

 SECOND, OR POSSIBLY THE THIRD, OVIPOSITING— 

 METHOD OF COVERING HER EGGS DESCRIBED. 



At four p. m. a triangularis specimen with conspicuous side stripes has 

 oviposited. This same specimen laid eggs before, this being the second or 

 possibly the third time. After ovipositing, she spent thirty minutes scrap- 

 ing up particles of earth to fill up the opening, working entirely with the left 

 tarsus, the claws of which she used in this painstaking task. The opposite 

 tarsal claws had been lost by accident. She was obliged to perform the 

 work with the remaining member, although she would try occasionally to 

 use the injured one. This specimen is easily identified among ten others 

 in the jar. When she first commenced covering the hole she took the ma- 



