INQUIRIES RELATIVE TO CRAWFISH. 7 



57. In what kind of weather do they plug the chimney ? 



58. How long at a time does one work, and at what hours ? 



59. Do they select a tree and burrow beneath its roots, or carry 



the chamber beneath an underground stone for protection ? 



60. Does a single species sometimes live in the water, and at an- 



other time live in holes on the land ? 



61. Does it sometimes colonize beneath a stone or log in ditch or 



meadow on the approach of cold weather ? 



62. Have you more than one kind living upon the branches, or 



on the tops of, submerged weeds in your streams or jDonds ? 



63. What is the greatest depth of water at which they are found ? 



64. Do the kinds which live on the weeds affect othei kinds of 



places ? 



65. Do they generally rest with heads directed up stream ? 



66. At what seasons and times of day do these unite sexually ? 



67. How soon after this do they lay their eggs ? 



68. Does the male uuite sexually with the female when she has 



eggs under her body ? 



69. Where does she go after being fecundated ? 



70. Does she feed during incubation ? 



71. Is she, or he, soft-shelled at the time of sexual union ? 



72. Please note peculiarities of spot from which your specimens are 



taken ? And state temperature and depth of water ? 



Name and address of observer. 



Date of statement, 

 55 



