(Inttii .]fitrliic I.ahornlin-if^ St. An'h-e}rs. 129 



Inistlcs of the tirst thorat-ic si'},MJU'nt. IK; wa.s Cully au arc 

 of its appruacli to the Serpnlids and Fiioffruna, yd tlu; 

 :il)s(MU'0 of ail operoulum siparatcn it from hotli, tliou^'li 

 tlifir can he no (jm-stion of it.s close aHinity witli Filixjniiia, 

 I lie more so as Salmacina reproduces by posterior l)uds. 

 lie tliouj^ht that Profn/n tfijsfcii, whieh De (-iual refafjes 

 united with Ftloijraua, should prohai)ly be embraced in his 

 srciius, thouj^h tiie eular;;emcnls at the tips of the branchial 

 li laments (h) not merit the name of opereula. lie mentions, 

 further, that it wouhl be as reasonal)Ie to include the eves 

 at the tips of the branehiie in liranchiouimu as opcrcidar as 

 Mich sweiliui^s in Protula ihjstvri. 



His first species was .S^. inrrnshnis*, which lie tliouj^ht niij;ht 

 he synonymous with Serpiila incrustatis (Linn.), Grube f, 

 and Scrjmia filniiraiKi of Sa(;chi %• I»j his specific characters, 

 however, no distinctive feature of moment is recognizable, 

 lor in leni^th (2 to 25 mm.), colour, the number of the 

 thoracic scjjments (8), the three kinds of doisal bristles, the 

 pectinate nncijii, the flexuous calcareous tube iucrustiu}^ 

 Zusteia and other marine or<:anisms, and the hermaphrodite 

 eondition, there is notliing diagnostic;. Thus Langerhans 

 subsequently showe<l that even the number of tlie thoracic 

 segments varied in this form from seven to nine. The 

 p'csence of eyes again cori'cspnnds with the condition in 

 iiloiirana inip/cxa and Sulmaciiia (/i/sferi, as also does the 

 structure of the first pair of thoracic bristles ; though the 

 bolder character of their serrations above the " knee" indi- 

 cates variation, it may be from environment, wiiilst the absence 

 of serrations in the tapering blade beyond the hiatus in 

 ('laj)aredc's desi-ription and figure is due to the artist, hir 

 they are |)resent in specimens from Naples, 'I'he description 

 and figures of tlie two i>thcr forms of bristles agree w ith the 

 conditions in Ftlu<jrana ; and the same may be said of the 

 abdominal bristles and the structure of the hooks. Claparede 

 found in one a double tip to the tail with two cirri, perhaps 

 ihc result of injury. 



lie re^'arded the anterior glands (nephridia) as the 

 secretory organs for the tul)cs. Further, he describes the 

 hermaphrodite animal as provided with orange ova in the 

 anterior region of tlie abdotucn, and zoosperms in the poste- 

 rior, even to the extremity, and the sperms had an elongated 

 head. Such an arrangeinent therefoii' differs from that 

 usually observed. 



• Op. n't. p. .\:w. 



t Krlifiiiod Ailin. u. Wiiriner, p. (\'2. 



\ ("atnl. CoDcli. r»'fi^. Nenpul. p. lU, l.S'JO (Jide Clapart'de). 



Ann. it Mu</. A. Hist. Ser. U. Vol, iii. '.» 



