Verrill, Notes on Radiata. 405 



The longer double-spindles measure -ISO"''" by -060"'"', -144 by -006, 

 •144 by -060, -132 by -054 ; stouter double-spindles -120 by 'OGO, -114 

 by -054 ; double-lieads -156 by •0'78, -144 by -071, •120 by -060, -114 

 by -066; heads -126 by -060, -114 by -060, -072 by -048; crosses -144 

 by -120, -120 by -078, '096 by "084, -084 by -072. 



California, — Maj. Wm. Rich; near San Francisco, — T. G. Gary, 

 (Goll. Mus. Gomp. Zoology). 



The original description (of 6^. fuoosa) is so imperfect as to render 

 the identity of the later specimens with it somewhat uncertain.* 



G. — Densely ramose, loio and fruUcose ; branchlets short, irregular. 



Leptgorgia Peruana Ven-ill. (Litigorgia Peruana, 1st Ed.). 



? Plexaura reticulata Ehrenberg, Corall. des rothen Meeres, p. 141, 1834. 

 Plexaura reticulata Philippi, Wieg. Arch., 1866. p. 119. 



Corallum low and shrubby, very densely branched, the branches 

 short, irregular, and crooked, often irregularly coalescent. Several 

 stems often arise from the same large base, close together. They at 

 once divide and subdivide irregularly into numerous crooked branches ; 

 these give off very numerous short and crooked branchlets, which 

 are sometimes distinctly pinnate. The branches and branchlets are 

 rather thick and round. The cells are small, not raised, and very 

 numerous, arranged in a broad band on each side of the branches. 

 Axis dark wood-brown, brittle and rigid, often hollow in the branch- 

 lets, due perhaps to some parasite. The coenenchyma is thin and 

 brittle. Golor whitish. The largest sjoecimens are about 6 inches 

 high and broad; the branches "25, and the branchlets '10 in dia- 

 meter. The spicula are pure white ; the longer double-S2)indles are 

 slender and acute, with numerous close warts, and a rather wide 

 median space. The stouter double-spindles are much shorter, with 

 a narrow median space and blunt ends, the warts forming a single 

 wreath on each side of the middle and a rounded cluster at each end. 

 The longer sjiicula are •120'""' by •048'"'", -120 by -042, -108 by -048 ; 

 the stouter ones '084 by -048, -078 by -048, -072 by -042, -084 by -042. 



Callao, Peru,— F. H. Bradley. 



I have thought it necessary to give a new name to this species for 

 several reasons : 



1st. It is not the Gorgonia reticulata Ellis. 

 2d. It may not be the Plexaura reticulata Ehr. 



* Dr. Kolliker has sent the spicula prepared from the original specimen of Plexaura 

 fucosa Val. It proves to be very different from the present species, and belongs to 

 Psammogorgia, (see p. 414). — Reprint. 



