NO. 2123. CRUSTACEA COLLECTED IN COLOMBIA— PEARSE. 541 



PSEUDOSIDA BIDENTATA Herrick. 



In pools at border of swamp, Fundacion, August 15. Previously- 

 reported from southern United States. 



OSTRACODA. 



PARACYPRIS PERELEGANS Herrick. 



Common among roots of floating plants in a swamp near ''La 

 Rosa" on July 30; in a ZewTia-filled pool in the woods near the 

 same place, August 2; and in the marsh at Fundacion, August 11, 

 among floating aquatic vegetation. My thanks are due to Mr. 

 R. W. Sharpe for the identification of this species, which was origin- 

 ally described from Alabama. 



ISOPODA. 



TYLOS LATREILLI Audouin and Savlgny. 



A single specimen was captured on the sandy ocean beach at 

 Santa Marta. Range: Odessa, Tunis, Algeria, Bermudas, Florida, 

 and (now) Colombia. 



PmLOSCIA CULEBRAE Moore. 



Below the Cincinnati Coffee Plantation this species was abundant 

 under leaves and logs in the forest down as far as Minca. It was 

 also foimd in smaller numbers at "La Rosa," where five specimens 

 were taken in a cane field and one in the bark of a rough-trunked 

 tree. 



This species has previously 

 been reported only from 

 Porto Rico (Moore, '01). 

 The uropods were broken off 

 the type-specimens, hence 

 are shown here (fig. 3). 



PHILOSCIA WALKERI, new species. 



Fig. 3.— Philoscia culebrae. Left ukopod and telson. 



Cotypes. —C?ii. No. 45931, 

 Museum of Zoology, Univer- 

 sity of Michigan. Cat. No. 

 47949, U.S.N.M. Collected at the top of San Lorenzo, Sierra Nevada 

 de Santa Marta, Colombia, 8,300 feet elevation, under stones in grass, 

 by F. M. Gaige, July 10, 1913. Orig. No. 130. 



Body very slender; 4 by 1.1 mm. Head nearly one and one-half 

 times as long as broad; front somewhat recurved between sides and 

 middle; sides and posterior margin rounded. First segment of thorax 

 little longer than those following, its anterior margin curved, the 

 posterior margin nearly straight; anterior angles rounded and pro- 

 jecting laterally somewhat beyond the sides of the head. Next six 



