1904.] NATURAL SCIENCES OF PHILADELPHIA. 145 



GAMASID^. 

 Macrocheles sp. 



Two specimens of a large dark species from Pimta Gorda, April. 



Gamasus sp. 



Various specimens of a species much like G. coleoptratus, and possibly 

 identical, from Punta Gorda. 



Lselaps sp. 



A few specimens from Biscayne Bay, April. 



Uropoda sp. 



Specimens from Punta Gorda, April, and Biscayne Bay; probably 

 representing more than one species. 



Megisthanus floridauus n. sp. 



Reddish-brown. Body egg-shaped; above smooth and shining, a 

 few short hairs in front, and four longer ones on the anterior margin. 

 Mandibles large, acute at tip. Leg I slender, about as long as wddth 

 of body, with many short hairs ; legs II and III short and stout, the 

 femur tuberculate on one edge, each tubercle tipped by a stout bristle, 

 long hairs near tip of tibia III, leg IV heavy, but longer than others, 

 femora in front tuberculate and with bristles, behind with three rather 

 blunt teeth, long hairs near tip of tibia; all legs, except I, end in a 

 sucker, but apparently without claws. 



Length 2.8 mm. 



One specimen from Enterprise. This is the first record of this 

 cosmotropical genus in the United States. It is a remarkable geiuis, 

 readily known by the small size of the claws, the teeth on hind femora, 

 and position of male genital orifice. 



ORIBATID^. 

 Galumna emarginata Banks. 



Appears to be conmion at Punta Gorda, April, and Lake AVorth. 



Eremaeus floridanus n. sp. 



Pale yellowish-brown; al^domen smooth, polished, venter the same. 

 Abdomen but little longer than broad, moderately high, no suture 

 between it and so-called tectal plate; inferior and superior bristles 

 very long and straight; set® of moderate length, clavate; legs not very 

 long, with many short hairs, all inserted on sides of body; coxal plate 

 of two anterior pairs shows a line each side not reaching the middle, 

 suture between third and fourth coxae not reaching the middle ; genital 

 opening small, fully twice its diameter in front of the nuich larger anal 

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