NO. 3 HARTMAN : POLYCHAETOUS ANNELIDS 209 



3. Dorsal setae of one kind, none serrated or strictly bifid ; bran- 

 chiae 10 to 12 pairs on a parapodium, dichotomously divided 

 3 to 5 times 4 



3. Dorsal setae include bifid serrated setae (pi. 32, fig. 28) and 

 bifid spurred smooth setae; branchiae variable in number on a 

 parapodium 5 



4. Median parapodia with 6 main branchial trunks, each to 4- 

 lobed; lateral dorsal cirri between second and third gill trunks, 

 counting from the dorsum E. calypta Essenberg 



4. Median parapodia with 10 to 12 main branchial trunks, each 4 

 or 5 times dichotomously branched ; lateral dorsal cirri between 

 gill trunks 6 and 7 or 5 and 6, counting from the dorsum . . 

 E. limbata Moore 



5. With 5 pairs of branchiae, the tips of the filaments flat, ex- 

 panded E. arctia Johnson 



5. With more than 5 pairs of branchiae, the tips of the filaments 



not expanded 6 



6. Smooth notopodial setae with a short to obscure spur ... 7 



6. Smooth notopodial setae with a lateral fang; median parapodia 

 with 7 pairs of branchial trunks, the dorsal cirrus between the 

 third and fourth trunks E. aurantiacCj p. 210 



7. With 9 to 11 branchial trunks; dorsal cirri between dorsal 

 trunks 3 and 4 or 4 and 5 E. dumosa Moore 



7. With 11 to 13 pairs of branchial trunks, dorsal cirri between 

 trunks 4 and 5 to 7 and 8 . . . . E. hortensis Moore 



7. With 10 pairs of branchial trunks, the dorsal cirri between 

 trunks 4 and 5 E. heterobranchia Johnson 



Euphrosyne panamlca Chamberlin 

 Plate 32, Figs. 24-26 



Euphrosyne panamica Chamberlin, 1919a, pp. 33-34, pi. 12, figs. 7, 8, 

 pi. 13, figs. 1-7. 



Collections. — 412-35, 436-35, 446-35. 3 specimens. 



Length 11 to 23 mm; number of setigerous segments 35 to 40. The 

 caruncle (pi. 32, fig. 25) is trilobed, the lateral processes somewhat 

 shorter than indicated by Chamberlin ; the median antenna extends along 

 the median lobe nearly to the middle of it. 



The branchiae are richly branched and terminate distally in inflated 

 lobes. A typical one from the sixteenth parapodium is shown in plate 32, 

 fig. 24. E. armadilloides Ehlers (1901, p. 37) has similar foliose bran- 



