48 BULLETIN 82, UNITED STATES NATIONAL MUSEUM. 



The chief paper of the year was Carpenter's account of the comatulids of the 

 Mergvii Arcliipehigo, hnsed upon a collection made by Mr. John Anderson. In this 

 paper the following comatulids are noticed: 



AtiUdon eUgans ZygomHra comata. 



Anledon andersoni, ep. nov Pontiometra andersoni. 



Antedon milberti Amphimelra milberti. 



Anledon spicata Stephanometra spicata. 



Antedon conjungens Lamprometra protectus. 



Aetinomelra notata, sp. nov Comalella stclligera. 



The difficulties attending the use of the various specific groups instituted by 

 Carpenter were first brought to notice by this article, for he referred Actinometra 

 notata to the " Paucicirra group" in which lie described it as a new species near 

 Act. paucicirra; it really belongs in the " Stelligera group," and had Carpenter 

 placed it here lie would have seen at once that it is the same as the Actinometra 

 stelligera described at great length in the Challenger report. It is in this paper that 

 Carpenter gives to the Series I of Antedon the name of " Elegans group; " at first he 

 had considered the single species represented in the collection as new, and when he 

 sent some myzostomes wliich he found upon it to Professor von Graff he gave him 

 the name of Antedon comata for it. Later he decided that it was the same as the 

 AustraUan species described by Boll, and suppressed the name. It has been recently 

 shown, liowever, that his first decision was correct. 



Aside from some papers of purely local interest, the chief contribution in 1890 

 was the prehminary ])a])cr by Dr. Clemens Ilartlaub describmg a large number of 

 new forms from the Indian Ocean. The complete work on the littoral comatuhd 

 fauna of the "Indian Archipelago" appeared in 1891; it is exhaustive in its treat- 

 ment, and, besides most excellent descriptions (accompanied by figures) of all the 

 new species, includes rcdcscrijitions of many imperfectly known forms, taken from 

 the tj'pes. During the preparation of this work Hartlaub was in constant com- 

 munication with Dr. P. H. Carpenter, to whom he referred several of the more 

 difficult problems; it thus comes to have an additional authoritativeness, as it 

 embodies to a certain extent conclusions reached by Carpenter from a study of 

 material upon wliich he never publislied. Hartlaub identified many of Liitken's 

 nomina nuda, placing them correctly in the synonymy. 



The species considered by Hartlaub are: 



Antedon bcngalensis, sp. nov Eeterometra bengaknsis. 



Antedon martensi, sp. nov Himcrometra martensi. 



Antedon kraepelini, sp. nov Eimerometra robuslipinna. 



Antedon brocHi, sp. nov Amphimetra variipinna. 



Anledon affinu. sp. nov Eeterometra affinis. 



Antedon ncmatodon, sp. nov Amphimetra nematodon. 



Anledon ludovici \Craspcdometra amboinx. 



[ Craspedomelra arulicirra. 



Anltdon crassipinna, sp. nov Eimerometra robiistipi'^na. 



Antedon clarx, sp. nov Petasometra clarir. 



Anledon bella, sp. nov Caiometra bella. 



Antedon bella, var. brunnea, var. nov Cenometra brunnea. 



Anledon klunzingcri, sp. nov Lamprometra palmala. 



