470 ACTINOMETRA. 



13. var. (?) lineata. 



1S79. Antedon sp. Rathbun, Trans. Conn. Acad., 5, p. 157. 



1880. Actinometra lineata P. H. Carpenter, Journ. Linn. Soc. London (Zool), 15, p. 213, pi. 12, 



fig. 27a, b. 1 

 1882. " " P. H. Carpenter, Proc. Zool. Soc. London, p. 747. 



1888. " " P. H. Carpenter, Chall. Rep., 26, p. 327-328, pi. 5, fig. 2; pi. 60, 



fig. 3. 



Nach Carpenter Chall. Rep., 26, p. 328, sammelte der "Blake" von dieser 

 Art resp. Varietat, deren Hauptverbreitungsgebiet die brasilianische Kiiste 

 (Bahia 8 Exemplare 7-20 Faden, "Challenger") zu sein scheint, Material bei Bar- 

 bados Station 285, 13-40 Faden; and possibly Station 155, off Montserrat, 88 

 Faden. Wie viel Exemplare des "Blake" er vorfand, sagt Carpenter nicht, und 

 kein mit der Etiquette "lineata" versehenes Stuck kam in meine Hande; auch 

 hatte kein von Barbados stammendes Exemplar etwa als lineata gedeutet wer- 

 den konnen. Anders dagegen liegt es mit dem nach Carpenter "possibly" von 

 Montserrat, 88 Faden, stammenden Material. Ich zweifle nicht, dass sich diese 

 Fundortsangabe auf das von mir Tafel 17, Figur 14 abgebildete Exemplar mit 

 Palmarserien bezieht. Carpenter ist, wie ich aus dem Wort "possibly" schliesse, 

 offenbar im Zweifel gewesen, ob er dasselbe zu discoidea oder zu lineata stellen 

 sollte, legte es aber mit der Etiquette "Montserrat, 88 Faden" zum Material der 

 ersteren (vergl. discoidea, p. 463 2 ). Dieser Zweifel Carpenters zeigt am besten, 

 dass die Trennung der zwei Arten discoidea und lineata auf schwachen Fiissen 

 stand. Vergleicht man die nachstehend citirte Beschreibung Carpenters 3 von 



1 Copieen dieser Figuren finden sich im Chall. Rep., 26, pi. 5, fig. 1c und 2e. 



2 Dass dieses Tafel 17, Figur 14 abgebildete Exemplar mit Palmarserien schliesslich nicht mchr von 

 Carpenter fur lineata gehalten wurde, gcht mit Sicherheit daraus hervor, dass er bei den "Remarks" 

 zu lineata sagt "Neither of the Caribbean individuals that 1 have seen, has any palmar series." 



3 Carpenters Beschreibung von Act. lineata lautet: 



"Centrodorsal discoidal, bearing twenty to thirty marginal cirri. These have eleven to seventeen joints, 

 usually not more than fourteen, several of which are longer than wide, the later joints overlapping dorsally. 



The first radials are usually concealed, together with more or less of the second, which may or may not 

 be united laterally. Three distichals, the axillary with a syzygy, and sometimes two palmars, the axillary 

 with a syzygy. The perisome between the rays is occasionally plated as far as the distichal axillary. 



Eighteen to thirty-four arms, the lower joints triangular and overlapping, but little wider than long; the 

 middle-joints more quadrate, and the later ones elongated. 



A syzygy in the second biachial, and the next between the ninth and twelfth; others at intervals'of one to 

 five, usually three or four joints. 



The distichal pinnule reaches nearly 15mm. long; with a large terminal comb. The next pinnule is but 

 little smaller; but the size decreases considerably after the pinnule on the second brachial, till the third or 

 fourth on the same side. The following pinnules increase slowly in length, becoming very long and slender 

 in the terminal third of the arm. The first five or six brachial pinnules are sometimes webbed by perisome 

 for about one-third of their length and have a small comb, which docs not usually extend further, though it 

 may occur as far out as the eighteenth brachial. The basal joint of the lower pinnules are sometimes slightly 

 carinate. 



Mouth: variable in position; a few of the hinder arms may be non-tentakuliferous. 



Disk: naked or bearing a few scattered grains. 



Color in spirit: reddish or yellowish brown, with a dark purple medio-dorsal line. — Disk 15mm.; 

 spread 16cm. 



Locality: Bahia, 7-20 fathoms, eight specimens. 



Other localities: Coast of Brazil; also the "Blake," 1878-79, Station 2S5, off Barbados; 13-10 fathoms; 

 and possibly Station 155, off Montserrat, 88 fathoms. 



