IS0P0D8 OF NORTH AMERICA. 



417 



''Inhabits 8outli Curoliiui. 



"Cabinet of the Academy. 



"Body oblono-, not distinctly attenuatcHl before; segments subecinal. 

 entire; liead at base etjual to the preceding segment, a sinus each side 

 in the middle; eyes prominent, black; antenna*, exteriors as long as 

 the body in one sex; in the other, longer, interiors nearly attaining 

 the tip of the second joint; hands with a prominent angle on the mid- 

 dle of the inferior edge, thumb closing on and surpassing the angle, 

 shorter than the hand; nails somewhat bifid at tip; terminal caudal 

 segment longitudinally subovate, stjles elongated cylindrical, equal 

 to the terminal segment of the body, lacinise very unequal, inner one 

 nearly thrice the length of the outer one, truncate at tip; color, pale 

 l)rown with a double dorsal brown line, united at the tip of the tail, a 

 brown line or two each side of the tail. Length nearly one-fourth of 

 an inch. 



"This animal is not an unconunon udiabitant of the swamps in the 

 forests of South Carolina. It might be referred to the genus Janira 

 of Doctor Leach." — Say." 



MANCASELLUS DANIELSI Richardson. 

 Maiiciise/lus ddiiie/Ki Rkhakdsox, I'mc I'. S. Nat. ilun., XX \', l!(()i', pp. 505-507. 



Loadity. — Lily Lake, La Forte, Indiana. 



Body broadly o\'al, with lateral parts of 

 segments widely expanded. Head broader 

 j)osteriorly than anteriorly, the posterior part 

 l)eing as wdde as the tirst thoracic segment. 

 Lateral margins have a deep and wide incision 

 which separates the narrower antm-ior lobes 

 from the widely expanded posterior lobes. 

 Lhe e3'es are o]){)osite these incisions. The 

 frontal margin is produced in a small nu^dian 

 j)oint, on eitlier side of which is a shallow 

 depression, followed by another point, in turn 

 succeeded by a slight depression. The anten- 

 nuhe are short, reaching only to the extremity 

 of the fourth joint of the peduncle of the 

 antenna' ; the flagellum consists of eight joints. 

 The antenna' are very long, extending nearly 

 the entire length of the bod^^ The niandil)le 

 is without a palp. 



The thoracic segments are su})e((ual in length, 

 are widely expanded, with lateral margins entire. 



Fk;. 16.S.— Mancaselia-s dani- 

 ELSI. X 3i. 



The lateral parts 

 The caudal segment is narrower posteriorly than anterior^, with 



".Jour. Acad. Nat. Sci. Phila., I, 1818, p. 428. 



28589—05- 



