338 BULLETIN 82, UNITED STATES NATIONAL MUSEUM 



Actinometra robusta, Probably Thursday Island =pectinata (4). 



Port Curtis =solaris (1). 



Actinomelra strata, Port Molle =solaris (1). 



In the Challenger report on the stalked crinoids (1884) Carpenter mentioned this 

 species as Actinometra robusta, Actinometra Solaris, and Actinometra strata. Under 

 Actinometra Solaris he cited the keeled lower segments of the earlier pinnules and the 

 radial position of the mouth. Of Actinometra robusta he said that it and Heliometra 

 glacialis are almost the only living comatulids with arm bases anything like as massive 

 as those of the fossil species. Under Actinometra strata, which he said is common at 

 Cape York, he described an abnormal specimen, mentioned the looseness of the attach- 

 ment of the visceral mass and the tolerably equal and symmetrical arrangement of 

 the ambulacra] grooves on the disk, the plating of the disk and the visceral layer of 

 the peritoneum, the pigment, as determined by Moseley, and the parasitic isopod 

 (Anilocra) sometimes found in the anal tube. 



In 1885 Professor Bell recorded some additional specimens from Australia, and 

 in 1886 Dr. P. H. Carpenter discussed the cirri in relation to those of other comatulids. 



In the Challenger report on the comatulids (1888) Carpenter published a detailed 

 account of this species, repeating much of the information on its structure and anatomy 

 which he had previously given, but adding very little that is new. He included as 

 synonyms of Solaris the subsequently described imperialis, hamata, robusta, albonotata, 

 intermedia, and strota, the last a name which he had tentatively given to the Chal- 

 lenger specimens from Cape York and which had been published in his report upon 

 the stalked crinoids (1884) in connection with structural and anatomical notes, by Bell 

 (1884), and also by von Graff (1885), though never in association with a formal descrip- 

 tion. It had also been given by von Graff (1884) as strata, and is so printed once in 

 the present report. He gave a detailed description of the species, mentioned a speci- 

 men from Port Molle collected by the Alert in which the centrodorsal is reduced to a 

 pentagonal plate without cirri (see under Comatula cratera), and remarked that in the 

 type of imperialis the centrodorsal has lost all trace of cirri on one side. He transferred 

 the localities Bohol and the Moluccas given by von Graff to pectmata, together with 

 a number of those given by Bell; but he gave no references to von Graff's papers. 

 The only new locality he gave for Solaris was Billiton, from which island he had 

 examined some in the British Museum. Among the localities he gives "Indien (Mus. 

 Wien)," which evidently refers to the type specimen of imperialis. But this specimen 

 was without locality. The locality "Indien" was given by Miiller in mistake for 

 "Neuholland" in 1843 and refers to the Lamarckian types of Solaris in the Paris 

 Museum. 



In 1891 Hartlaub recorded a specimen in the Gottingen Museum from the China 

 Sea, and in 1898 Doderlein recorded this species from Thursday Island. 



In 1909 I mentioned a dry example from Australia in the Copenhagen Museum 

 which had been determined by Liitken as Antedon (Actinometra) robustum. 



In 1911 I published a detailed account of this species, including the synonymy 

 and all previous records, and listed additional specimens from Port Molle and Masthead 

 Island, and others without locality. In another paper I discussed its distribution in 

 detail. In a paper on the crinoids in the Paris Museum I noted having examined the 





