774 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL. 14 



Addenda 



The following species in Ectoprocta-Cheilostomata have come to the 

 author's attention since Parts 1 and 2 were prepared for publication. 

 Also the ovicell of Pachyegis brunnea (Hincks), hitherto unknown, is 

 figured (plate 81, fig. 11), and Cheilopora praelucida (Hincks), dis- 

 cussed on page 465 of Part 2, is illustrated on plate 81, fig. 12. All but 

 one of these are from the last collections made at Point Barrow, Alaska, 

 by Prof, and Mrs. G. E. MacGinitie. Their persistent efforts for two 

 seasons resulted in 104 species from a very limited area around the 

 Arctic Research Laboratory, which add greatly to our knowledge of 

 circumpolar distribution of the Bryozoa. 



No doubt careful collecting all along the American coasts, in special 

 habitats and especially in deeper waters, will add many more species to 

 the long list already recorded. 



Gheilostomata 



Anasga 



Membranipora annae, new name 



Acanthodesia serrata (Hincks), Hastings, 1930:707 (not M. memhra- 



nacea, form serrata Hincks, 1882:469) 

 Membranipora hastingsae Osburn, 1950:29 (preoc. by M. (Electra) 



hastingsae Marcus, 1940) 



Dr. Anna B. Hastings misidentified this species with the M. serrata 

 of Hincks (1882:469, which was already preoccupied by the M. serrata 

 of MacGillivray (1868:131). [See under M. serrilamella, new name, 

 Part 1, p. 22] The present author renamed it hastingsae (Part 1, p. 

 29), overlooking the fact that Marcus (1940) had already used this 

 name for another species. Dr. Marcus (in litt. Aug. 27, 1950) kindly 

 called my attention to the error: "In Danmarks Fauna, 1940, Electra 

 is treated as a subgenus of Membranipora, and M. (Electra) hastingsae 

 is dealt with. So the specific name is preoccupied and your species will 

 have to receive a new name." 



I have taken the liberty of using Dr. Hastings' given name for this 

 very attractive little species. 



Hincksina gothica new species 

 Plate 81, fig. 1 



Zoarium unilaminar, encrusting on shells, stones and bryozoans, white 

 to light brown. Our largest colony, rounded and about 25 mm in 



