20S Mr. N. Colgan — Contributions towards a 



published report of its proceedings, the Latin binomial Loman- 

 otus genei, a strict compliance with nomenclature rules will 

 not permit of that name dating from 1845. It was not until 

 1846 that he definitely named the species L. genei. 



184-5. — Joshua Alder and Albany Hancock, in ignorance 

 of the existence of Verany's genus Lomanotus, found their 

 genus Eumenis on a single specimen of a nudibranch \ inch 

 long dredged in deep water near Berry Head, Torbay. The 

 generic characters of Eumenis, as first published in the Ann. 

 & Mag. Nat. Hist, for November 1845 (vol. xvi. p. 311), are 

 substantially the same as those of Verany's Lomanotus. This 

 was acknowledged by Alder and Hancock in the section of 

 their famous ' Monograph of the British Nudibranchiate 

 Mollusca' which appeared in 1854, where they concede 

 precedence to Ve'rany's name for the new genus. A full 

 specific description of the Berry Head nudibranch was 

 published along with the generic characters of Eumenis, the 

 species being named E. marmorata. This was not only the 

 first species of the genus detected in the British Isles, but 

 was also the first anywhere named, described, and published 

 in strict conformity with nomenclature rules. The Mono- 

 graph gives coloured plates of E. marmorata in which the 

 rhinophore-sheaths are shown with entire margins, while the 

 pleuropodium is represented as disconnected from the sheaths 

 and passing round their bases to the front of the animal. 

 The prevailing colour of the body is shown as brown marbled 

 with white. The following passage in the Monograph may 

 be taken as disclaiming perfect accuracy for either the 

 description or the figure of the animal : — " It was a little 

 injured and lived only a short time after being brought on 

 shore, so that we had no opportunity of observing its habits, 

 and the drawing and description are consequently not so 

 perfect as we could have wished." 



1846. — Verany, in a Guide to Genoa, published in that 

 city, gives a Catalogue of the Marine Invertebrates of the 

 Gulf of Genoa and Nice (' Catalogo degli Animali invertebrati 

 marini del Golfo di Genova e Nizza'). In this Catalogue 

 (pp. 24-25) appears for the first time a full description of the 

 species he had previously (at the Milan Congress) dedicated 

 to Prof. Gene. At the head of the description the animal is 

 named in Italian Lomanoto di Gene, but the omission to 

 supply in the text a valid Latin binomial is made good in 

 figure 6 of plate ii. at the end of the Catalogue, where the 

 name Lomanotus genei appears beneath a tolerably good out- 



