Further Observations oft Koeueuia. 423 



sacs were everted ! Since tliere was iio pairecl openiiig-, as might be 

 expected these sacs were not paired, yet tlieir tips sliowed a bifurcated 

 condition. which gave eacli sac tlie appearance of a pair of sacs 

 witli one moiitli. 



F 1 a g e 1 1 u m. This appendage consists invariably of seven joints. 

 The second, third and fourtli only possessing a Avhirl of smooth setae. 

 While tlie first small Joint lias the four smooth setae, with size and 

 arrangement relatively the same as in the adult. All but this little 

 first Joint possesses a whorl of plumulose setae, and in this respect 

 no Variation occurs in the terminal Joint. In connection with the 

 consideration of this type of flagellum, it is well to speak of the 

 three rather interesting cases of retardation of development, which 

 came under my notice. At different times wiien collecting I obtained 

 three unusually large adult K. wheehri (one male and two females), 

 which had only seven joints to the flagellum. These Üagella con- 

 formed in every way to those of the flrst known post-embryonic 

 stage, except in size. 



2. Second Stage. 



Only two specimens of this stage of K. ivheeleri Avere obtained; 

 the first was captured April 6th, even before I had taken a Single 

 specimen of the flrst stage. This individual had no flagellum, while 

 the other one taken May 8th was perfect. 



He ad. Labrum with four pairs of setae projecting over the 

 mouth. There are two pairs of lateral sense organs, while the 

 number and arrangement of the dorsal cephalo-thoracic hairs are 

 as in the adult. There are seven cephalo-thoracic sternal setae, four 

 of which are in a transverse row, while the remaining three are 

 anterior to these and in the position to form a V. 



Chelicerae. These first appendages have the seven teeth 

 and the regulär arrangement of the denticles. The movable Joint is 

 not as much curved as the corresponding one in the first stage and 

 its first tooth is not so large in proportion to the other teeth. 



First pair of Appendages. These appendages which 

 according to their position, are known as the first pair of legs, 

 function entirely as pedipalps. 



1. The second tarsal Joint has one long tactile hair arising on 

 its Upper surface. 



2. Fourth metatarsal Joint with one of these tactile hairs on 

 the Upper surface. 



