BULLETIN 5'J, UNITED STATK8 NATIdNAI, MUSKUM. 199 



DeHeripfionqfsecondspeciiiHii. — C'oralhiiiicoinposcd of thick iiliites, fusinj;l>y tiicir 

 edg<;s into series and also fused l;itfrall\ . iipprr edges obtusely rounded or flattened. 

 One ])Iate is W mm. wide hy "iii thick: another. 6-'? wide l>y 'it! thick: just Itelow the 

 rounded summit l.'l tlii<k. Tiie free |)()rtion of the plates varies from 1.'! to 3'.' nun. 

 in lenjfth. Secondary lolir- appear on both tlie outer edges and outer Hat surface.sof 

 th<> j)lales. The hase of tlie coraUum unfortunately is not pres;'rvc<l. The growth 

 usually is contiinu>us: tiiere are. iiowever, instancesof younger, li\ iiig layers incrust- 

 ing older dead portions of the eorallum. 



The calices are deep or shallow, iioiygonal in outline, from 1 to 1.75 mm. in 

 diameter, usually ahout \.-2ii: they aic rather small, separateil hy thin walls, whose 

 margins are usually elevated and more or U'ss raggecj. Tjie uuirai denticles are 

 fragile and irregular in sha|)e and development. 



Tile septa vary much in thickness: they may lie fragile or may lie comparatively 

 thick. The interseptal loculi vary accordingly in width, their outlines rendered irreg- 

 idar Iiy the small and crowded frostings of the septjil faces. Each septum typi- 

 cally possesses a single traliecula h(>tween the palus and the wall. The septal granule 

 usually is detached from the wall: while the outer portion of the septum is a ridge near 

 the upj>er edge of the wall, luit in some instances it may he wide and connect liy a 

 plate with the septal granule. The septal trabeeuhe are bound together by a ring of 

 .syuapticula that may be more or less fused to the wall, or detached from it, producing, 

 when the latter condition prevails, a trinmrate appearance. 



The palar formula normally is either complete or without a jialus on the ventral 

 directive. The pali are slender, usually rather tall, rounded aliove, and coarsely 

 graiudate, for their size: liound together l)\- a ring of .syuapticula. 



The columella is a delicate, narrow lamella, rising from the bottom of a 

 depression, around which the |)ali stand. It is comiected by radii with the septal 

 groups. 



The plate suuunit- consist of a vesicular recticuluin in wiiieii the skeletal 

 elements do not show the definite ditlerentiation and airaugemeiit that they do on 

 the sides ol the coi'alliuii. 



Locality. — Kahana. Oalui: received from Dr. W. T. Hrigham: Waikiki. Oalui. 

 .T. E. Duerden, collector. 



7'yj>e.—Cnt. No. l'l'2o-J. U.S.N.M. 



Paratype.^V-Ai. No. 2Ui»o». U.S.N.M. 



Ri'inarks. — In growth form and in its septal arrangement and palar fornmla. 

 the.se specimens resemble typical /'. Inhntu: they ditlei-. however, in the rough aspect 

 of the surface and in the wider uppei- ends of the .septa, which may give the upper 

 edge of the wall a truncate appi'arance. Other specimens show intergradation with 

 the type form of the specie.-. 



PORITES LOBATA forma IN FUNDIBULUM, new. 

 riale lAXXII, Hl'. 1". Plate I.WXIII. li^. 1. 



The following description is based on a specimen broken from the outside of a 

 coralhuu. 



Corallum composed of asceiidiiig thick cohunns or coiuuuiiform lobes, with o-loin- 

 erate sides and tlatli'iieil to|)s. I'late LXXXllI. lig. 1. rei)reseiits ijie outside of the 



