418 



BULLETIN 54, UNITED STATES NATIONAL MUSEUM. 



Fig. 469.— Maxcasellus danielsi 

 Mandible. 



the end ol)tusely rounded. Width of segment at base about one and 



one-half times its length. 



The caudal stylets are long and slender, the length of the .st3'let 



being equal to the length of the eaudal segment. The basal joint is 



equal to the length of the tifth peduncular joint of the antennte. The 



outer branch is half as long as tlie inner branch. 



The first pair of legs are subchelate. The propodus is In'oadly 



expanded and armed on the inner margin with a large tooth about 



halfway between the ])ase and the articulation of the joint with the 



dactylus. Between the tooth and the articulation of the dactylus with 



the propodus is a proc- 

 ess having a blunt, trun- 

 cate extremity. The 

 dactylus is })rovided 

 with two teeth near the 

 l)ase on the inner mar- 

 gin. The carpus is small 

 and triangular in shape. 

 The merus is produced 

 at the upper outer angle. 

 The remaining six pairs of legs are similar in 



structure and aniliulatory in character, with bi- 



unguiculate dactyli. 



Three specimens were found at Lil}- Lake, La- 



porte, Indiana, by Mr. Daniels. 

 Ti/jh'.— Cat. No. 25()93, U.S.N.M. 

 This species is more closely related to J/, tena.r 



(Smith) than to any other species of the genus. 



It differs, however, from J/, te/ta.r in the greater 



length of the antenna', which extend nearlv the F'^. 47o.-mancasellu.s 



. , . . , . , I -I • ir J ^\\ danieisi. Maxilliped. 



entire length of tlie body, while in J/, tenn.i- they (Gkeatly enlarged.) 

 are only half the length of the l)ody; 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. 

 tetidx the width and length of this segment are about equal; in the 

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

 the caudal segment, while in M. terui.t they are only a little longer 

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

 the basal segment of the stylet, its length being equal to the length 

 of the fifth joint of the peduncle of the antemnv, wdiile in M. tefuat' it 

 is equal to the length of the fourth joint of that organ (the fourth 

 joint of the peduncle of the antenna^ in both species })eing shorter than 

 the fifth joint); in the greater l)readth of the entire body in propoi'tion 

 to its l(>ngth, JL tena.r being narrower in Avidth as compared to its 

 length; and in the difference in the legs of the first pair, the propodus 



