40 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.53. 



hooks, by means of which the animal fastens itself. I know this spe- 

 cies only through Baster, who observed that this animal bore consid- 

 erable resemblance to that figured by Gissler. (Acta Holmiae, 1751, 

 p. 90; pi. G, figs. 1-5.)" 



This is the only description ever given, and while it shows that the 

 creature can not belong to the genus Lernaea^ it does not tell us where 

 it can be placed. 



LERNAEA GADUS-MINUTUS Hesse, 1891, p. 191. 



In the text Hesse spoke of this "Lernee du Gade petit" as though 

 it were a new species, but in the explanation of the plate (pi. 7, figs. 

 1-9) he distinctly called it the larva of "Lernaea branchialis du 

 Gade petit," which seems to be what it really was. 



LERNAEA LOTAE Hermann. 1783. 



Oken in ISIG separated the genus Schisturus, in which the body 

 was soft, from the genus Lernaea, in which it was covered with a 

 horny skin. He placed the species lotae in this new genus and gave 

 for it the following descri^Dtion : "Vier ungleiche Eierschniire, am 

 Mund zwei Hiikschen." 



This was probably some genus that possessed paired posterior 

 processes, since none of the copepod parasites have four egg strings. 

 At all events it was not a Lernaean. 



LERNAEA MULTICORNIS Cnvier. 1830, p. 256. 



" II y en a une a cornes petites, inegales et tres nombreuses {L. mul- 

 ticornls, Cuv.) sur les ouies d'un serran des Indes." This has never 

 been seen or mentioned by any other author, and its attachment to 

 the eye renders it highly improbable that it belongs to the genus 

 Lernaea. 



Genus LEPTOTRACHELUS Brian. 



Silvcstria Brian, Atti del Soc. Ligustica di Scienze, vol. 13, 1903, 6 pp. 

 1 text fig. 



Lcptotnichclus Brian, Zool. Anz., vol. 26, 1903, p. 547. 

 External generic characters of female. — Cephalothorax with two 

 or three soft, cushionlike protuberances or burns, varying in size 

 and shape; head considerably swollen; neck long, straight, and 

 slender, or sometimes bent into a U-shape, covered anteriorly with a 

 cutaneous sheath, monilliform posteriorly ; trunk abruptly enlarged, 

 subcylindrical, thickest anteriorly, tapering posteriorly, with nu- 

 merous transverse wrinkles but without a pregenital prominence, 

 straight or slightly curved; no abdomen; egg strings, antennae, 

 mouth parts, and swimming legs unknown; male also unknown. 



