344 



ME. a. P.T7SK ON THE SPECIES OE CELLEPOEA 



If the form of the operculum be taken as the character*, the 

 species may be arranged as under : — 



§ I. Operculum suborbicular, semicircular, or arcuate. 



(Woodcuts A & B.) 



1. C. nodulosa. 



2. C. hastigera. 



3. C. albirostris. 



4. C. ovalis. 



5. C. columnaris. 



6. C. polymorpha. 



7. C. Jacksoniensis. 



8. C. apiculata. 



9. C. tridenticulata. 



10. C. zamboangensis. 



11. C. honolulensis. 



12. C. vagans. 



13. C. imbellis. 



§ II. Operculum more or less pyriform or contracted below, with 

 an articular notch on each side. (Woodcuts C & D.) 



a. Massive, lobate, or incrusting. 



1. C. tesselata. 3. C. rudis. 



2. C. Eatonensis. 4. C. cylindriformis. 



/3. Pisiform, parasitic. 

 5. C. ansata. 9. C. signata. 



6. C. bicorriis. 



7. C. canaliculata. 



8. C. conica. 



10. C. bidenticulata. 



11. C. bilabiata. 



Section I. 



1. C. HASTIGEEA, n. Sp.f 



Char. Zoarium erect, expanded, lobate. Zocecia deeply im- 

 mersed ; surface entire dull. Orifice (primary) suborbicular, with 

 a slightly sinuated lower border and no spines. Preoral rostra 

 of two kinds — one, very stout and subconical, supporting on the 

 posterior face, either at or near the apex or lower down, an 

 avicularium, with either an acute or a duckbill-shaped mandible 

 and a toothed beak ; the other slenderer and very acute, with a 

 small lateral avicularium at the base overhanging a notch. 



Sab. St. 162. Bass Strait, 38-40 fms., sand. 



* See paper by A. W. Waters in Proc. Lit. & Philos. Soc. Mancb. 1878, 

 vol. xvii. p. 125. 



t "Cball. Rep." pi. xxix. fig. 1. The illustrative figures here referred to 

 along with the name of each new species will appear in my Monograph of 

 the ' Challenger ' Polyzoa, now nearly completed. 



