Lucerndria convolvulus. 



59 



accident mentioned at the beginning of these remarks. Fig. 2. a 

 shows the animal in the shell, one of the lower-side valves 

 being removed. The colour of the shell inside is blue, like 

 that of the muscle ; and the hollow, marked c, shows the part 

 where the brown fluid was found. 



Should these observations (unscientific as they assuredly 

 are) be not altogether useless, they may answer, in part, the 

 concluding desire of your former correspondent on the genus 

 Zepas (V. 342.). Mr. Blagden is about to preserve a portion 

 of the barnacles, in spirits, to present to some public institution. 



Stanley Green, Poole, Feb. 10. 1834. 



Art. VII. Illustrations in British Zoology. By George John- 

 ston, M.D V Fellow of the Royal College of Surgeons of Edin- 

 burgh. 



27. Lucerna n ria convo'lvulus. {fig. 3.) 



Lucernaria conv61vulus. «, The natural size, side view ; 6, a view of the oral disk expanded, 

 natural size ; c, a few of the filaments in the stomach, magnified. 



This species resembles the L. auricula, which we have 

 figured in this Magazine, V. 44.; but besides some minute 

 differences in their external anatomy, which satisfactorily dis- 

 tinguish them, there are some discriminative peculiarities in 

 their habits. Lucernaria auricula swims with ease, and is not 

 greatly disinclined to the exercise ; it expands the tentacula, 

 and inflects them within the cup of its disk with a rapid con 



