408 ME. E. I. POCOCK ON THE 



Paxjemon Olfeesii, Wiegmaniu 



Palaemon Olfersii, Wiegmann, Arch. Naturg. 1836, p. 150. 

 Palsemon spinimanus, M.-Edwards, Crust, ii. p. 399. 

 PalEcmon Olfersii, Ortmann, Zool. Jahrb. v. p. 733. 

 Cumberland, Chateaubilair, and FitzHughes Eivers. 



PAii^MON rATJSTiNTJS, Saussure. 



Palsemon faustinus, Saussure, Mem. Crust, nouveaux du Me.rique et 

 des Antilles, p. 53, pi. iv. fig. 30 (extract from Mem. Soc. Phys. Genive, 

 1858); Ortmann, op. cit. p. 734. 



Cumberland and FitzHughes Rivers. 



Tbis species and P. Olfersii are possibly not distinct. 



Paljjmok appfni, von Martens. 



Palsemon appuni, von Martens, Arch. f. Naturg. xxxv. p. 31, pi. ii. 

 fig. 5; Pocock, Ann. Mag. Nat. Hist. (6) iii. pp. 10-11, pi. ii. fig. 2; 

 Ortmann, Zool. Jahrb. v. p. 722 (1891). 



Cumberland and FitzHugbes Eivers. 



I reported tbis species witli some hesitation from Dominica, 

 having only one specimen for examination. The series, however, 

 obtained by Mr. Smith has conclusively, to my mind, settled the 

 question of the correctness of my identification. 



Atta occidentalis, Newport. 



Atya occidentalis, Newport, Ann. Mag. Nat. Hist. xix. p. 158 (1847) ; 

 Pocock, loc. cit. pp. 11-16, pi. ii. fig. 3. 

 Cumberland and FitzHughes Eivers, 



Caeidina ameeicana, Guerin. 

 FitzHughes Eiver. 



XiPHOCAEis elongata, Cruerln. 



FitzHughes Eiver. 



The examples of this species that were obtained are of interest 

 inasmuch as they serve largely to bridge over the structural 

 interval between X. elongata and the form from |Dominica to 

 which I gave the name intermedia. 



