THE GORGONIANS OF THE BRAZILIAN COAST. *77 



In 200 fathoms, off Bahia, the Hassler Expedition dredged a red and yellow 

 variegated species of Evacis, a plated genus that includes E. solitaria (Poiirt .). 



Moricea humilis (Edw.) Verrill. 



Gorgonia citrina Lamk., Hist., vol. II, p. 317; ed. 2, p. 494 {non Esper). 

 Eunicea citrina Val., Comptes-rendus, XLI, p. 12, 1855. 



Eunicea humilis M.- 1 dw., Corall., vol. I, p. 149, pi. B2, fig. 1, 1857. Verrill, Trans. Conn Acad 

 vol. I, p. 360, pi. IV, figs. 4-4b, 1868. Hartt, Geology of Brazil, pp. 62, 179, 210, 18701 ' 



Plate XXIX, figures 1, la (branchlet and spicules of No. 1515b, in natural 

 colors). Plate XXXII, figures 4, 5 (branchlets of the same). Plate XXXV, 

 figure 2 (calicles of the same). Text cut, No. 1 (spicules). 



Variety humilis. 



The best grown and probably the most normal specimens have the crowded 

 branches more or less clavate, and mostly 4 to 6 mm. in diameter distally, more 

 slender at the base. The branches that are crowded and less exposed are smaller 

 The calicles are a little prominent and nariform. The color is lemon-yellow to 

 sulphur-yellow, often with a tinge of purple, due to some small purple spicules 



at the surface. 



It forms close clumps, from 100 to 130 mm. high and about as broad. The 

 larger spicules are clear sulphur-yellow and diversified in form. Part are stout, 

 regular, acute, evenly warted spindles; some are more slender; many, especially 

 those near the surface, have large, conical spinules on the outer side or near one 

 end; others are warted clubs with the larger end spinose with sharp spinules; 

 many are irregular spinose spicules. The superficial purple spicules are slender, 

 strongly warted spindles. 



The larger regularly warted spindles measure 0.69 X 0.18; 0.58 X 0.13; 

 0.51 X 0.18; 0.49 X 0.14; 0.44 X 0.15; slender spindles, 0.46 X 0.09; club- 

 spindles, 0.40 X 0.17; one-sided spinose spindles, 0.67 X 0.18; 0.M X 0.12; 

 spinose clubs, 0.31 X 0.16; 0.18 X 0.14; ellipsoids, 0.26 X 0.18; small purple 

 spindles, 0.22 X 0.07; 0.21 X 0.08 mm. 



Abrolhos Reefs, abundant, coll. C. F. Hartt, 1867. Nos. 151 5a, b. Common 

 at Bahia and at Port Seguro in shallow water; sometimes in tide-pools. Para- 

 hyba do Norte, R. Rathbun, 1876. No. 4564. Extends southward to Guara- 

 pary. (Hartt.) 



Variety mutans, nov. 



This variety agrees with the normal form in color and mode of branching 

 The branches are rather more slender, mostly 3 to 4 mm. in diameter. The 

 calicles change their form or character in different parts. 



Near the bases of the larger branches they are a little prominent, conical or 

 verruciform, with a small round terminal orifice. On some of the less exposed 

 branches they are scarcely raised above the general surface. Distally, on the 

 more exposed branchlets, they partly become low verruciform with the aperture 

 looking upward; partly slightly nariform, while some remain as mere pores. 



