538 REPORT—1885. 
In a series of papers, ‘Contributions towards a General History of 
Marine Polyzoa,’ the Rey. Thomas Hincks has described and figured 
many new forms of Membranipora from several localities. Many of these 
species were collected by Miss E. C. Jelly and Miss Gatty, and submitted 
to Mr. Hincks for examination. I have only numbered the new forms— 
or new to present list. 
Mapzrra Sprcizs. 
28. Membranipora tenuirostris, Hincks, pl. ix. fig. 3 
= M. Flemingii, Waters, Bay of Nap. Pol. ‘Ann. 
Mag. Nat. Hist.,’ February 1879. 
PAS). a nodulifera, Hincks, pl. ix. fig. 2. 
30. “a crassimarginata, Hincks, pl. ix. fig. 1. 
31. granulifera, Hincks, pl. ix. fig. 4. 
(This species belongs to the M. Flemingti group.) 
32. * sceletos, Busk = Lepralia, zd. ‘Quart. Jour. Mic. 
Soe.’ 1858. ‘ Zoophytology,’ Busk, pl. xx. fig. 3. 
From the Contributions towards a General History of the Marine 
Polyzoa, Rev. T. Hincks, ‘Ann. Mag. Nat. Hist.’ vol. vi. 1880, pp. 
69-91. In the same contribution, Part II., Mr. Hincks describes in full 
the following species under various divisions (p. 81, &c.) :— 
a. Species with a membranous front wall. 
33. Membranipora albida, Hincks, pl. x. fig. 5. Loc.: Singapore; on 
Tubipora musica, Allied to M. curvirostris, 
Hincks. 
34, 3 plana, Hincks, pl. xi. fig. 2. Loc. : Australia. 
35. 5 armifera, Hincks, pl. xi. fig. 5. Loc.: Gulf of 
St. Lawrence; on Flustra membranacea. Allied 
to M. sophizw, Busk. 
36. rr horrida, Hincks, pl. x. fig. 6. Loc. : California. 
37. i. Carteri, Hincks. Australia. Mr. Hincks speaks 
of this species as having a special interest, ‘as 
being the only known Membranipora which pos- 
sesses a fully developed bird’s head appendage 
identical in structure with that of the genera 
Bugula and Bicellaria.’ And in a note he adds 
that M. minaz, Sm. (= M. princeps, Hincks) 
is furnished with an avicularia which has the 
form of the bird’s head, but it is fixed. M. Oarteré 
has the appendage articulated. 
38. * pura, Hincks, pl. xi. fig. 3. Australia or New 
Zealand. 
39. - villosa, Hincks, pl. x. fig. 8. 
a’. Cell prolonged below the aperture. 
40. Membranipora distorta, Hincks, pl. x. fig. 7. Loc.: Ceylon. There 
is evidence of affinity between this interesting 
form and the common M. pilosa. 
b. With a calcareous lamina. 
41. Membranipora nitens, Hincks, pl. xi. fig. 4. Australia; on Polyzoa. 
‘ Certainly distinct,’ says Mr. Hincks, ‘from the 
South Atlantic M. tuberculata, Bosc.’ 
