152 A Summer Afternoon by the Sea. 



riors of the lateral extremity of its body/ decided that it could 

 not be a mollusk. 



" Menke (Zeitsch. fur Malac. 1844, 21) proposes to remove 

 the genus to the Annelides; more recent authors have con- 

 sidered it as a Crustacean. 



il Mr. Gosse at first sight thought it might be a Brachiopod 

 crustacean, but thinks it has more affinity to the Annelides 

 (p. 348), and refers it to that class in the Systematic Index. 



" According to Eschscholtz, and Quoy and Gaimard, the 

 South Sea specimens are very much smaller than those found in 

 the Mediterranean ; thus, Tomopteris onisciformis and T. Scolo- 

 pendra are most probably distinct species. Mr. Gosse's John- 

 stonella Catharina is, no doubt, a synonym of the latter, since 

 Mr. R. Ball records that Bryarea scolopendra has been taken 

 in Dublin Bay by Dr. Corrigan." (Proc. Brit . Assoc. 1849, 

 p. 72.)" 



In addition I should state that Dr. Adolph Edouard Grube, 

 in his excellent work Die Familien der Anneliden (Berlin, 

 1851), has included the genus, without question, among the 

 Annelida ; constituting a family and an order of it alone, which, 

 with the curious caterpillar-like Bervpatus, of the West Indies, 

 of which he makes another order, he intercalates between the 

 Terebellacea, and the Liimbricina. Dr. Grube includes but one 

 species in the genus, quoting Quoy and Gaimard's Briareus 

 scolopendra as a synonym of Eschscholtz's T. onisciformis. 



The following is Grube's account of the family, with its 

 technical characters : — * 



" ANNELIDA. 



" Oed. Gymnocopa. Eam. Tomopteridea. 



" Body lengthened or worm-shaped, slender, with broad 

 floats, often small or not well developed towards the hinder 

 end. Segments not very numerous, not separated by bounding- 

 furrows. 



' e Head-lappets united behind with the mouth-segment ; the 

 former with short antennas, the latter (hinder) with very long 

 tentacular cirri, in which, as in the antennae, a bristle-like part 

 is set. Two eyes. 



" Mouth directed downwards, unarmed, proboscis not ob- 

 served. 



" Lateral processes of the segments formmg considerable 

 floats, two-lapped, without bristles or needles. 



" We know as yet but one genus, Tomojpteris, with a single 

 species, of which the external and internal structure has been 

 thoroughly investigated by Busch. The body is amazingly 



* Op. cit. p. 95. 



