220 AUGUSTA RUCKER. 



florencise. In sections, however, the region corresponding 

 to the lung-sac areas reacts to stains in exactly the same way 

 as do the cells around the inverted lung-sacs of K. wheeleri. 

 Specimens stained in borax carmine show three pairs of deeply 

 stained patches on the ventral surfaces of segments 4, 5, and 

 6. The arrangement of the setse on the ventral surface is 

 entirely different from any other described species. On 

 segments 4, 5, and 6, just over the peculiarly stained areas 

 above mentioned, there is a crowding of the setfc of the 

 belts, so that two groups of four setge each are observed on 

 each side of the mid-ventral line. From their situation these 

 setae correspond to the four pairs of protective setae of the 

 lung-sacs of K. wheeleri. LikeK. siamensis, K. florencite 

 presents an identical appearance of the ventral surface of 

 segments 4, 5, and 6. Segment 7 is likewise lackiug in 

 a seta on its mid-ventral surface, while all the remaining 

 segments are regularly supplied with setge, which occur 

 much oftener than in the other segments. 



Reproductive Appendages. — Only the female appen- 

 dages can be described, since males were lacking among all 

 the specimens taken. Why such a condition exists in all the 

 other species except K. wheeleri is a matter yet to be 

 accounted for. While the males are lacking, the females 

 must suffice to give specific character. In describing the 

 appendages of the female almost the same description will 

 hold good for K. f lorenciae as was given for K. wheeleri. 

 The anterior unpaired appendage of the second segment 

 appears more pointed when viewed from below ; while, Avhen 

 seen in profile, the sides of the appendage project backward 

 and upward, forming a very deep trough with very thin 

 sides. So thin are the lateral extensions of this appendage 

 that they are easily overlooked in specimens thoroughly 

 cleaned in KOH. The seta) of this appendage consist of ten 

 pairs. The first row at the base, made up of three pairs, 

 curve slightly downward. The second row of two pairs is 

 situated further down on the appendage, and otirves slightly 

 in the opposite direction. The remaining hairs are arranged 



