Narrative of Bahama Expedition. 179 



with the deeply serrate margins, impart a particularly ornate 

 appearance. The genera HcbcUa. Crypfohir/a and Graiunuiria 

 were each represented by new forms. 



The Sertularid.^ was but poorly represented, their being 

 only two species, ScrtnhircUa gaya Wir. robiista Allman, and 

 S. distans Allman.^ The Plumuearid.e, however, came up 

 in quantities, and constantly elicted exclamations of surprise 

 and delight at their exquisite grace and beaut\-. Some were 

 of monstrous size for this group, reaching a height of two feet 

 or more. Among the more notable prizes were two species 

 of Allman's genus Schizjtrlclia, a genus hitherto anrepresented 

 in the West Indian region. The name is descriptive of the 

 fact that the pinnae are divided or split into two branches. I 

 am inclined to believe that one of these branches is mereh- a 

 modified phylactogonium. a specialized branch for the pro- 

 tection of the reproductive organs. Two species of Pliimu- 

 laria, P. attcumiata Allman and P. geniinata Allman. were 

 collected from rather deep water. The beautiful genus 

 Aglaoplioiia was represented by three species originallv des- 

 cribed by Allman, . t. apocarpa, A. gracilis and A. rigitfa. 

 There has been considerable discussion regarding the validity 

 of the last two species. They were described originally with 

 the reproductive portion or gonosome of A. gracilis unknown. 

 Afterward, Dr. J. Walter Fewkes seems to have found the 

 gonosome of the latter, and considered it the same as that of 

 A. rigida, and seemed inclined to regard the two species as 

 identical. Our specimens, however, show the gonosome to 

 be quite different from that of A. rigida, the corbula having 

 about ten pairs of entirely free leaflets with a row of nemato- 

 phores on both sides of each leaflet. The trophosome has been 

 compared with specimens in the Museum of Comparative Zool- 

 ogy at Cambridge identitied by Clarke, and they were found ' 

 to agree. A new species of Agiajphciiia secured by us has a 

 very large and ornate corbula which varies greatly in length 

 in different specimens. The leaflets are numerous, twelve 



^This name is preoccupied, having been used bv both LaMarck and 

 Lainouroux early in the present century. 



