602 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.47. 



ScMsturus. — This name was applied by Rudolphi 'm 1809 to a genus 

 of worms, and by Oken in 1815 to a single species of the genus Cla- 

 vella. In this latter use it becomes a synonym. 



Entomoda. — Applied by Lamarck in 1818 to the genus Lernaeopoda; 

 but as the type or first species named by Lamarck under his new 

 genus was E. cornuta, which belongs to the genus Chondracanthus , 

 established in 1811, it is evident that the name can not be used for 

 a Lernaeopod. 



Anchorella. — Proposed by Cuvier in 1830 for a single Lernaean 

 which he wished to estabhsh as a new genus, and afterwards applied 

 by other authors to the entire genus Clavella, excluding the latter 

 name. But the name Clavella had been published by Oken in 1815 

 and hence Anchorella is either a distinct genus or becomes a syno- 

 nym (see p. 667). 



Lernaeomyzon. — Proposed by Blainville in 1822 for this same genus 

 Clavella, but the latter had seven years' precedence. 



Hessia. — In 1870 Edouard van Beneden published a paper ^ en- 

 titled " Developpement des genres Anchorella, Lernaeopoda, BracJiiella, 

 et Hessia." 



No description of this last-mentioned genus is given, nor any 

 figures except of the eggs and one larval stage. Beneden says of 

 it that it approaches on the one side Anchorella, which it resembles 

 in aU the phenomena of development, while on the other hand it is 

 hke certain of the Chondracanthidae in its external appearance; that 

 it is a very common parasite along the coast of Brittany in the giU 

 cavity of Tngla lineata. It may be the same species that Richiardi 

 afterwards designated as Anchorella carusi. But he also has given 

 us no description or figures; hence both designations become mere 

 names until something further is known about them. 



Cestopoda. — Kurz in his admirable paper on the Lernaeopodidae 

 (1877) described and figured a new genus and species which he des- 

 ignated as Cestopoda amplectens. But 14 years before Hesse had 

 described a new genus and species which he called Naohranchia cygni- 

 formis. The two genera are identical, although the species are dis- 

 tinct, and hence Kurz's name must become a synonym of that given 

 by Hesse.2 



Stylophorus. — In 1878 Hesse pubhshed the description and figures 

 of another new genus and species which he called Stylophorus hippo- 

 cephalus. But on examination this proves to be the same genus that 

 Kr0yer had designated as Charopinus in 1863. Hence Hesse's name 

 must become a synonym of Kr0yer's. 



Thynnicola. — Micuhcich in 1904 described what he thought to be 

 a new genus and species under the name Thynnicola ziegleri, but which 



•Bull. Acad. Roy. Belgique, ser. 2, vol. 29, p. 223. 

 sAnnales des Sciences Naturelles, ser, 4, vol. 20, p. 101, pi. 1. 



