WEST COAST HYDEOIDS 79 



PLUMULARID.E 



Few species of this family have been reported except from 

 tropical and sub-tropical regions. Though the family is rich in 

 genera and species, representatives of only five genera, Aglao- 

 phenia, Antenella, Diplocheilus, Xiiditheca and Plumidaria, 

 have been found off the Pacific Coast of North America, and 

 three of these are represented hy a single species. In the new 

 material examined, I have found only two of these, Aglaophenia 

 and Pliimularia. The limitations of these genera have been so 

 generally agreed upon, that it is not necessary to discuss them. 

 The genus Antenella AUman, of which Dr. Torrey reports a spe- 

 cies from Catalina Island, Cal.,^^ has also been generally accept- 

 ed. The genus Xuditheca has been used by Prof. Nutting^^ to 

 include a species collected off the Unalaska Coast by Dall, and 

 named by Clark, *'° Macrorhynchia dalli. Macrorhyncliia was 

 used by Kirchenpauer*'^ as a name for one of the four sub-genera 

 into which he divided the genus Aglaophenia, but he did not use 

 it as a generic name. This sub-genus has not been generally rec- 

 ognized, and at any rate the species collected by Dall does not 

 answer the description for the sub-genus. Prof. Nutting evi- 

 dently considered the differences great enough to be of generic 

 value and they are certainly quite marked. The genus Diplo- 

 cheilus Allman has received general acceptance, though Bale does 

 not find it suitable. In the first instance he used the generic 

 name AzygopJon for a species of the same genus,^- but later he 

 placed Allman 's species, Diplocheilus mirahilis with his own 

 Azygoplon productum, in the genus Kirchenpaueria Jickeli.®^ 

 Judging from Jickeli's figures*'* one must agree with Torrey^^ 

 and Stechow,'^'' that such arrangement is not justified. Though 



5S Hydroida of the Pacific Coast. 1902, p. 74. 



59 American Hydroids. Part I, 1900, p. 128. 



60 Alaskan Hydroids, 1876. p. 230. 



61 Ueber die Hydroiden Familie Plumularidae, Part I, Aglaophenia, 1872, 

 p. 25. 



62 Proc. Linn. Soc, X. S. W., 1888, p. 773. 



63 Proc. Linn. Soc, Victoria, 1893, p. 107. 



64Der Bau der Hydroidpolypen, II, 1883, PI. 28, fig. 27. 



65 Hydroids of San Diego, 1904, p. 35. 



66 Hydroidpolpyen der Japanischen Ostkiiste, I Teil, 1909, p. 88. 



