1904.] NATURAL SCIENCES OF PHILADELPHIA. 125 



Dictyna sublata Hentz. 



From Punta Gorcla, April, and Palm Beach, March. 



Dictyna floridana n. sp. 



Cephalothorax and mandibles reddish ; legs, sternum and spinnerets 

 j-ellowdsh ; abdomen gray, mottled with white. Legs and l3ody evenly 

 clothed with dark hairs. Head in male elevated, the ]\I.E. subeqiial, 

 they form a quadrangle broader than high. In the male there is a 

 strong tooth-like process on the outer base of each mandible. The 

 male palpi are peculiar; the patella is large, swollen, globular; the 

 palpal organ has a long slender process that, arising from the base, 

 extends up one side, across the tip of palpus and down the other side, 

 where its end is curved. This process has a groove on outer side, in 

 which rests the long style. At the base on the outer side is a bifid 

 black process, and two curved broad white hooks. Elsewhere the 

 species is of the usual structure. 



Length 2.4 mm. 



One pair from Lake Worth (Slosson). Readily known from all other 

 Dictynas by the globose patella of the male palpus. 



ULOBORID^. 



TJloborus plumipes Lucas. 



Several from Lake Worth, Biscayne Ba}', !March and April. 

 Dinopsis spinosus Marx. 



A few examples from Palm Beach. ]\Iarch, and ]\Iiami, April. 



THBRIDIID^]. 



Theridium studiosum Hentz. 



Quite common, from Runnymede, Xov. ; Punta Gorda, Jan.; Bis- 

 cayne Bay, March and April; Levy county, April (Laurent), and Lake 

 Worth. The most common Thcridium in Florida. 



Theridium volatile Keyserling. 



A cou})le from Runnymede, Nov. It was not jDreviously known from 

 the United States; but these specimens agree with the description and 

 figures of the South American form. 



Theridium floridensis Banks. 



Theridium Jura Keys. nee. Hentz. 



From Runnymede, Nov.. and Lake Worth, Fel^r. ; not known outside 

 of the State. 

 Theridium differens Emerton. 



One specimen from Punta Gorda. 



