Fabricinae in the Pacific — Hartman 
383 
16. Without peristomial or pygidial eyes 
Manayunkia speciosa 
16. With peristomial and pygidial eyes . . 
.Manayunkia pacifica and M. spongicola 
17. Thorax with only 4 setigerous seg- 
ments Fahricta ventrilinguata 
17. Thorax with 8 setigerous segments . . 18 
18. Thoracic collar only ventral and lim- 
ited; thoracic notosetae include 
slender and spatulate ones \^a 
a. Radioles number presumably 2 
pairs Fabricia atlantica 
b. Radioles number 3 pairs 
Fabricia dubia 
18. Thoracic collar more extensive and 
with straight margin; thoracic noto- 
setae slender (Fig. 7) to subspatu- 
late 19 
18. Thoracic collar with festooned fringes 
PFabricia siaukhu 
19. Thoracic collar presumably absent. . 
Fabricia leidyi 
19. Thoracic collar present 20 
20. Collar with a pair of digitate lobes at 
the middorsum. ..... .Fabricia capensis 
20. Collar without digitate lobes at the 
middorsum Fabricia limnicola 
21. Thoracic collar with a crenulate mar- 
gin Oridia crenicollis 
21. Thoracic collar with a straight margin . 22 
22. Pygidial eyes (Fig. 2) present 23 
22. Pygidial eyes absent 24 
23. Thoracic setae include spatulate and 
slender ones Oridia minuta 
23. Thoracic setae include only slender 
ones Oridia armandi 
24. Thoracic setae include spatulate and 
slender ones Oridia rivularis 
24. Thoracic setae include only slender 
ones Oridia limbata 
25. Thoracic spatulate setae lack a mucro 
Euchone magna 
25. Thoracic setae with a mucro or slender 
point 26 
26. Thoracic collar oblique and longest 
dorsally Euchone alicaudata 
26. Thoracic collar about equally high all 
around Euchone analis 
27. Thoracic spatulate setae nearly to 
without a mucro; body larger, 50 
to 100 mm. long 28 
27. Thoracic spatulate setae with a mucro; 
body smaller, less than 40 mm. 
long 29 
28. Spatulate setae with a short mucro; 
color in life pale rose or green .... 
Chone infundibuliformis 
28. Spatulate setae without a mucrO; color 
in life white or pale yellow 
Chone mollis 
29. Abdomen with 17 or 18 segments; 
spatulate setae with a short mucro; 
radioles number 7 to 9 pairs 
Chone ecaudata 
29. Abdomen with about 26 segments; 
spatulate setae with a moderately 
long mucro; radioles number 6 or 
7 pairs Chone minuta 
29. Abdomen with about 51 segments; 
spatulate setae with a very long 
mucro; radioles number about 10 
pairs Chone gracilis 
Genus Fabricia Blainville, 1828 
This genus was recently re-examined and 
emended by Berkeley and Berkeley (1950) to 
include the characters of Oridia Rioja (1917). 
I prefer herein to restrict Fabricia to exclude 
Oridia, but to support Berkeley’s opinion re- 
garding the lack of importance of thoracic 
collar development. The diagnosis of the 
genus is thus the same as that proposed by 
Berkeley and Berkeley (1950: 66) except that 
in Fabricia the abdominal uncini are long 
handled and the distal cutting edge has 
pectinately arranged teeth (Fig. 5), whereas 
in Oridia the abdominal uncini are avicular, 
lacking a handle. 
The generic diagnosis may be summarized. 
The body consists of the peristomium fol- 
lowed by eight (only four in F. ventrilinguata 
Johansson) thoracic and three abdominal 
setigerous segments and a pygidium. The 
