THEEE NEW GENERA AND FIVE NEW SPECIES OF 

 PAEASITIC CRUSTACEA 



By H. F, NiEKSTRAsz 



Of Utrecht, Netherlands 



and 



G. A. Brender a Brandts 



Of Blaricum, Netherlands 



INTRODUCTION 



In the course of a study of the decapod Crustacea parasitized by 

 rhizocephalids, contained in the collection of the United States Na- 

 tional Museum, several unique forms were observed by Dr. H. 

 Boschma, of Leiden, Netherlands. These were entrusted to the 

 authors for determination, together with another species sent direct 

 to us from Washington. 



Puzzling as the material at first proved to be, we believe we should 

 make it known an apparently new genus and species of Epicarid, 

 Faba, new genus with F. setosa as the genotype; a new genus and 

 species of parasite of SpirontocaHs of problematical systematic 

 affinities ; Heptalobus^ new genus with H. paradoxus as the genotype ; 

 and a new rhizocephalid, Duplorhis ocarina^ parasitic on Hemiar- 

 thus dbdoTninalis (Kr0yer), itself a parasite of Spirontocaris^ another 

 case of double or secondary parasitism. 



The description of a second species of Faha, F. glabra, belonging 

 to the Bishop Museum, Honolulu, is also given here, as it is the only 

 other known representative of this new genus. 



A new species and the type of a new genus of Epicarid from 

 China, Apocepon pulcher, is also described. 



SYSTEMATIC DISCUSSION 



FABA, new genus 



Male, unknown ; described from the female : 



Body bean-shaped ; almost wholly filled with eggs or embroyos so 

 far as can be ascertained; near the proximal extremity a trunk 



No. 2832.— Proceedings U. S. National Museum, Vol. 77, Art. 9 



93035 — 30 1 



