A MONOGRAPH OF THE EXISTING CRINOIDS 321 



cone of Comatula mediterranea (=Antedon. mediterranca) said that "since that time, 

 having had an opportunity of examining C. carinata, Lamarck, or a very closely allied 

 species, I find nearly the same structure, but that the tubular proboscis is bent down 

 toward the center as if by a suture, so that the openings are very close together, and 

 the muscular ridges are stronger both on the abdominal integument and on the fingers; 

 and it appears to be this part which forms the fringe of them." 



In 1830 a preparation of a specimen of Alecto carinata was listed as being in the 

 Museum of the Royal College of Surgeons of London. This may have been the speci- 

 men mentioned by Gray. 



Edward Griffith in 1834 published two colored figures of a species identified as 

 Comatula carinata. One of these is a ventral view of the animal with the arms ex- 

 tended. It lacks detail and is not identifiable. The other represents the proximal 

 portion of an animal as far as about the twentieth brachial, and is an excellent likeness 

 of'Amphimetra tessellata discoidea (see Part 4a, p. 376). It is a copy of a figure origi- 

 nally published by Guexin-Meneville in his " Iconographie du regne animal" (1828- 

 1837), though no hint of this is given. 



Prof. Johannes Muller, in April 1840, noted that there are 2-5 brachials between 

 the syzygial pairs in Comatula carinata. In 1841 he gave a list of the six ten-armed 

 comatulids described up to that time that he considered as valid species. The first 

 of these was Alecto carinata, under which he included as a synonym the Comatula 

 carinata of Lamarck, and to which he referred the figures given by Griffith on plate 8. 



In 1843 Muller published, under the name Alecto carinata, a redescription of 

 Lamarck's types of Comatula carinata which was drawn up from notes made for him 

 at the Paris Museum by Franz Hermann Troschel. He gave the characters as follows: 

 10 arms. About 35 cirri on the centrodorsal, composed of 24 segments without dorsal 

 processes. The brachials are short, broader on the distal than on the proximal end, 

 and therefore imbricating. The dorsal side of the brachials is carinate, and there is 

 a tubercle on the distal border on the dorsal side. Two to 5 brachials between the 

 syzygial pan's. The 8-9 lowest pinnules on each side are somewhat the larger; they 

 gradually increase from the first to the eighth or ninth, then decrease again. The 

 segments of the pinnules, especially on the thicker part of the arm, are short, broader 

 than long, laterally flattened, and provided along the whole length of the outer side 

 with a sharp edge. The skin of the disk is naked. About 8 inches (200 mm.) in di- 

 ameter. 



In his memoir on the structure of Pentacrinus caput-Medusae (=Cenocrinus 

 asteria) published in 1843 Muller said that the pinnules of Alecto carinata are flat, and 

 especially the lower ones are strongly broadened. 



In 1845 Hardouin Michelin published, under the direction of Fe"lix Edouard 

 Gue'rin-Me'neville, a list of the zoophytes, echinoderms, and starfishes that had been 

 collected at Mauritius by Julien Desjardins, including with these others from the 

 collection of Colonel Mathieu, and from the collection of the Paris Museum. Among 

 the species recorded from M. Desjardin's collection was Comatula carinata Lamarck. 



In 1849 Muller, under the heading Comatula (Alecto) carinata, repeated the revised 

 description he had published in 1843. He gave lie de France as the habitat of the 

 species and listed the Berlin and Paris Museums as repositories of specimens. He 



