88 Natural History Bui.i.etin. 



ally, Lafiva vcmista, and also by the fact that the margin is 

 very slightly, if at all, everted. The other species is still 

 more robust, and perfectly smooth, the annulations which 

 make L. venusta so attractive being entirely absent. 



Two new species of Crvpfohin'a were added to this inter- 

 esting genus. One was among the most graceful forms of 

 hydroids secured, having exceedingly large and long h3'dro- 

 thec^ gracefully curved with their bases twisted together, a 

 very distinct and striking species. Another form is distin- 

 guished by profusely annulated hydrotheca' which are nearly 

 opposite on the polysiphonic stem. Another interesting find 

 was a species which bears a ver}- striking resemblance to 

 Lci/cea convallaria, but a closer examination shows that each 

 calicle is separated from the stem by a distinct partition or 

 septum, a character which, according to Allman, must throw the 

 Havana species into the genus LictorcUa. The gonangia are of 

 the peculiar anchor shape described by Clarke, but the top is 

 produced into a tube through which the ova apparentl}' 

 escape, and not through the lateral flukes of the anchor. 



Some novel forms were encountered among the sertularians. 

 One species, growing to a height of about six inches, was pro- 

 vided with the largest hydrothecte the writer ever saw. 

 These were further remarkable in being in the form of a 

 parallelopipedon, with a square aperture and an operculum 

 composed of four flaps. The margin is ornamented with 

 a number of false margins, as if produced by successive 

 periods of growth. Scrtiilaria iiitci^'ritJicca has N'er}' large 

 cylindrical hydrotheca^ without opercular flaps. The gonan- 

 gia of this species are almost unique in springing apparentl}' 

 from the side of the hydrotheca. An exceedingly delicate 

 Sertiilar/a is characterized by having the hydrotheca> in pairs 

 with their backs contingent, and borne on the side, not the 

 front, of the stem as in the genus Dcsiiioscyp/ui:>. Scrtiilaria 

 tiihithcca completes the list of sertularians from, this region. 



A number of interesting; Plumularid.^ were dredsfed on the 

 pentacrinus ground. Phnuiilaria megxiJocefhala and Autoi- 

 nclla gracilis, were found. A fragmentary specimen, with 



