448 Mr. S. 0. Eidley 07i Frans-Jose^h-Land 



spines ; for the numbers of these are as often as not 12 in this 

 species, which is the maximum number assigned by Hincks 

 to M. lineata. 



Anarthropora monodon^ Smitt. 



Lepralia vionoclon, Busk, Quart. Journ. Micr. Sci. viii. p. 213, pi. xxix. 



figs. 3,4. 

 Anarthropora monodon, forma minuscida, Smitt, ffifv. Akad. Forh. 

 18U7, Bihang, pp. 7, 64, pi. xxiv. figs. 20-24. 



In one of the four colonies which occur in this collection 

 the cells are subrhomboidal, and have in some cases a small 

 pore on the raised area above as well as below the mouth. 

 The rhomboidal shape is not confined to the cells of this 

 colony. The connexion between the special pore of the 

 Porinida3 and the oral sinus of the Myriozoida^ is instructively 

 illustrated by examples of some of the younger cells, which 

 show the gap connecting the infraoral pore with the mouth 

 not yet closed, and, in fact, represent a Myriozoid stage of a 

 Porinid cell. 



The pores never become converted into avicularia as in 

 Smitt's " forma mojuscula.^^ 



Myriozoum suhgracile, Smitt, 



Myriozoum suhgracile, D'Orbigny F, Paleontologie Fran?aise, iii. p. 662 ; 

 Smitt, (Efv. Vet. Forli. 1867, Bihang, pp. 18, 119. 



It appears to me that the species described by Packard 

 (Canad. Nat. viii. p. 411) is rightly assigned to this species, 

 but that he does wrong in calling attention to the annulate 

 character of the branches as showing its identity with Mille^ 

 jpova truncata, Fabricius ; for this is too slight, in both the 

 present and all other specimens which I have examined, to 

 have been noticed by Fabricius, whose description seems to 

 me to refer to M, coarctatum of Sars. A portion of a colony 

 occm-s here, presenting the characters usually found in arctic 

 specimens ; the diameter of the branches is a trifle more 

 than 1 millim. 



Myriozoum crustaceum, Smitt. 



Myriozoum crustaceum, Smitt, CEfv. Vet. Akad. Forh. 1867, Bihang; 



pp. 18, 114, pi. XXV. figs. 88-91. 

 Leieschara Crustacea, id. ibid. 1878, p. 20. 



Four colonies, one of which has the central part stained 

 pink, the marginal parts remaining pale yellowish white. 

 Cancelli very large and evident in the lateral cells, where 

 they are much extended longitudinally and are larger than 

 those of Smitt's figs. 88, 89 ; scarcely developed in those of the 



