THE SKRTrLARID^E. Ill 



tubular. squarish in cross section, closely approximated, parallel to each oilier and to the branch 

 for nearly their entire length, their short free distal ends bending outward and forward: margin 

 sinuous, hut not toothed; aperture la rye. directed more nearly upward than is usual in this 

 "Vims; operculum very conspicuous, forming an arched cap over the aperture. 



(riiH^fi,,,,!, . ( ionangia attached to the hack of stem, small, pellucid, oblong-oval, with a short, 

 tubular neck and with the walls beset throughout with small, sharp, thorn-like spines. 



Distribution. West Indian region and Florida keys, Bahama expedition from the Slate 

 University of Iowa; off Bahia. Brax.il. ( '/mil, nil, r; Key West (Allinaii): I'rince of Wales 

 Channel, Torres Strait (Busk); .|AW,v,. Station _>:;_':;. lat. X. _':; lu' 51", long. W. M' lit' (>:;". 

 If,:: fathoms; Station !>::>>, lat. N. L':', In' 36", long. W. s-j In' li>". Kill fathoms; Station 2350. lat. 

 N. 2:-5 ID' Hit", long. W. x-2 ->\\' 21", i't:: faihoms. 



Having examined Altaian's type of Desmoscyphus acanthoca/rpus and compared it with his 

 Desmoscyphus longitheca, I have no hesitation in declaring them identical. Bale' calls attention 

 to the close resemblance between I>. /n/ii//'f//.<-ft Allman and X. <l!t/!f<ilix Busk. The drawings and 

 descriptions of this latter species given by Bale agree exactly with the type of />. ,/,-,//,//,, w,y///.x 

 Allman. Busk's description has the priority. and the other two must be regarded as synonyms. 



Typ< . In South Kensington Museum. London. Fragment in possession of the author. 



? DIPHASIA PULCHRA, new species. 

 (Plate XXXI, tins. 1-3.) 



TrnjilKixonti.'. Colony attaining a height of about ;"> inches. Stem strongly geniculate, divided 

 into fairly regular internodes, at least in distal part, each internode giving forth u branch, the 

 nodes being just under the processes which support the branches. Branches arranged in a spiral, 

 rising gracefully from the main stem, forming a dense. symmetrical, bushy tut't. giving a verv 

 elegant appearance to the colony; branches divided into long internodes, each of which bears 

 several hydrothecii'. Hydrotheca 1 rather distant, subalternate, long, pitcher-shaped, the distal 

 end narrowed and terminating in a mouth like that of a pitcher; margin with two broad opposite 

 teeth, and a sinuation or excavation on the adcauline side, where the one-napped operculum is 

 attached. 



( iii/ioxoiin . --Not known. 



I)',x1r'il,,it'i,,n. -Mlnitraxx Station I'si;:-',, hit. N. 4s >*', long. W. li.':! lo', (57 fathoms. 



This graceful species bears considerable 1 resemblance to certain forms of Thn/nr'ni, but seems 

 to have more affinities for Itt^Jnix'ni. where it is provisionally placed. When the gonosouie is 

 discovered it may be necessary to place it in another genus. 



TI/II, .s-//V<.v. -Cat. No. I'.tT'.tit. I'.isiH), U.S.N.M.; Cat. No. Is7i'4. Museum of State ("niversity 

 of Iowa; also in the colleeti< ..... f tho author. 



DIPHASIA PAARMANNI. new species. 

 ( Plat.- XXXI, li-.-. 4-6.) 



Ti-iijilinxiini, . Colony erect, rigid, plumil'orm. attaining a height of about :'. inches. Stem 

 stin'. straight, the proximal unbraitched part smooth and without nodes, the remainder divided 

 into obscure but regular internodes. each of which bears a pair of opposite hydrothcra- and a 

 branch. Branches strictly alternate, still', divided from the stem by a sharp basal constriction; 

 internodes regular, each bearing two alternate hydrothecie and divided by oblique nodes. Hydro- 

 thecie alternate on branches, opposite on main stem, rather distant, about the distal one-third 

 free, tubular, curving gently outward, ending in a sinuous margin shaped like the mouth of a 

 pitcher. Operculum adcauline. consisting of a single nap. 



(iitnuKiinn . (ionangia borne in rows along the front of branches. Female gonangia large, 

 oblong-ovate, proximal end narrowing to a short slender pedicel, distal end dome-shaped and 

 consisting of four large lobes with contiguous or coalesced edge-, arching o\ er to form the dome; 



'Australian Hy.lmi.l /.,... pliylr-. lss|, p. 101. 

 5125 IT 1' 04 - S 



