506 



PROCEEDINGS OF THE NATIONAL MUSEUM. 



Tx; 



Tho caudal scgiiKMit is narrower posteriorly than anteriorly, witli 

 the end o))tusely rounded. Width of seo-nient at })ase about one and 

 one-half times its lenoth. 



The caudal stylets are lono- aiid slender, the lenuth of the stylet 



beino- equal to the lenoth of the caudal segment. The ))asal joint is 



equal to the length of the hfth peduncular 



_^\^ joint of the antenna?. The outer ])ranch is 



\ \ half as long as the inner lu-anch. 



The first pair of legs "are subchelate. The 



ropodus is broadly expanded and armed on 



^ . the inner margin with a large tooth about 



^ ^^ lialf way between the base and the articula- 



L '.--^'^^ tion of tho joint with 



Fi,;. -.-MANKiBLE OK Max- tlic dactylus. Betweon 

 cASELLus DANiELsi. ^j^^, ioo\h aud thc artlcii- 



lation of the dactylus with the propodus is a 

 process having a blunt, truncate extremity. The 

 dactylus is provided with two teeth near the 1ias( 

 on the inner margin. The carpiis is small and 

 triangular in shape. Tho merus is produced at 

 the upper outer angle. 



The remaining six pairs of legs are similar in 

 structure and ambulatory in character, with 

 ])iunguiculate dact3di. 



Three specimens were 

 found at Lily Lake, 

 Laporte, Indiana. 1)y Mr. 

 Daniels. 



Type.—Q^t. No. 25693. 

 L.8.N.M. 



This species is more 

 closely related to M. tenax 

 Harger than to any other 



species of the genus. It differs, however, from 

 M, tenax in the greater length of the antenna?, 

 which extend nearly the entire length of the 

 ])ody, while in M. tenax they are only half the 

 length of the body; in the greater width of the 

 caudal segment in proportion to its length, the 

 width being one and one-half times the length, 

 while in M. tenax the width and length of this segment are about equal; 

 in the greater length of the caudal stylets, which are equal to the ength 

 of the caudal segment, while in M. tena^ they are only a little longer 

 than half the length of the caudal segment; in the greater length ot 

 the l^asal segment of the stylet, its length being equal to the length 



Fiii. o.— Maxiliped of 



MANCASELLUS DANIELSI. 



Greatly enlargep. 



Fu;. 4.— Leg uv first 



I'AIR OF MaNCASELIA'S 

 DANIEI^I. X 14|. 



