232 THE ANNELIDA POLYCHAETA. 



Synonymy of Genera. 



Nauphanta, and Nausica Kinberg (1865) fall under Marphysa as does also 

 MacDufRa Mcintosh. 



Blainvillea Quatrefages is synonymous with Nematonereis Schmarda. 



The position of Heteromarphysa Verrill is somewhat doubtful. It would 

 fall with Nicidion in the key above, but according to Verrill's account differs 

 from that genus in having the prostomium f\ised with the peristomium above 

 and also with the second somite. 



Leodice Savigny. 



Descript. Egypte. Hist, nat., 1809 [= 1822], 1, pt. 3, p. 13, 48. 



Eunice Cuvieb, Regno anim., 1817, 2, p. 525; ed. 3, 1830, 3, p. 199; Quatrefages, Hist. nat. annelcs, 



1865, 1, p. 307; Ehlers, Borstenwiirmer, 1868, p. 303. 

 Nereidonta Bl^inville, Diet. sci. nat., 1828, 57, p. 475. 

 Eriphyle Kinberg, Ofvers. K. vet. akad. Forh., 1865, no. 4, p. 561. 

 Mayeria Verrill, Trans. Conn. acad. sci., 1900, 10, p. 650. 



The species of Leodice listed in this paper may be separated as follows: 



a. All branchiae simple, cirriform. 

 6. Tentacles strongly articulated, nearly moniliforin; branchiae beginning on somite IX; teeth of 



maxillae II six or seven L. makemoana, sp. nov. 



6b. Tentacles not obviously articulated; branchiae beginning in middle region of body; teeth of 



maxillae II two (or three) L. siciliensis Grube. 



aa. Branchiae, in part at least, branched. 



b. Tentacles smooth throughout, not distinctly articulated. 



c. First branchiae occurring on somite V, the last on or near somite XLIII. . . L. scgregata, sp. nov. 

 cc. First branchiae on somite IX or farther caudad. 



d. First branchiae on somite X\TI or XVIII, the last on or near somite CXII . . . .L. liia, sp. nov. 

 dd. First branchiae on somite IX, and occurring on all subsequent ones excepting last two or 



three L. contingcns, sp. nov. 



66. Tentacles distinctly annulate. 



c. Branchiae beginning on somite VII. 



d. Branchiae at most with two or three branches, these rather arbuscular, but mostly simple 

 and cirriform. 

 e. Branchiae all .shorter than the notocirri; branched branchiae beginning with the fourth. 



L. oliga papeetensis, subsp. nov. 

 ee. Branchiae in widest part of body decidedly longer than the notocirri; branched branchiae 



beginning with the second L. oliga, sp. nov. 



dd. Brancliiae in part with five to seven filaments and most with more than three, the branchiae 



unilaterally pectinate L. panamena, sp. nov. 



cc. Branchiae beginning on somite IX or X. 



d. Branchiae beginning on somite X; filaments arbuscular in arrangement, at most four in 



number; tentacles articulate only distally L. pauroneurata, sp. nov. 



dd. Branchiae beginning on somite IX; unilaterally pectinate, with filaments numerous, exceed- 

 ing ten on some branchiae; tentacles articulate proximaUy L. nesiotes, sp. nov. 



