354 Proceedings of the Royal Physical Society. 



esculentus, among others. Some of these urchins I put into a 

 bottle containing strong methylated spirit; after washing 

 them in this spirit, an examination of the residue revealed a 

 considerable number of specimens of this rare Copepod, and 

 of little else. 



Genus (93) Modiolicola, Aurivilius, 1883. 



232. Modiolicola insignis, Aurivilius. 



1883. Modiolicola insignis, Aur., Akad. Afhandl. Stockbolm (1883), 

 pp. 10 and 39, taf. 2, figs. 1-10; taf. 4, 

 figs. 13-16. 



1893. ,, ,, T. Scott, Eleventh F. B. Kept., pt. iii. 



p. 207, pi. iv. figs. 13-24. 



Hal. — Frequent in the shells of living " Horse Mussels," 

 Mytihis modiolus. The species was obtained in most of the 

 large mussels examined. 



Genus (94) Herrmannella, Canu, 1891. 



233. Herrmannella rostrata, Canu. 



1891. Herrmannella rostrata, Canu, Bull. Sci. France et Belgique, 



t. xxiii. p. 480. 



1892. ,, ,, idem, Les Copep. du Boulonnais, 



p. 236, pi. xxiv. figs. 1-13. 



1892. Lichomolgus agilis, T. and A. Scott, Ann. and Mag. Nat. 



Hist. (6), vol. X. p. 201, pi. XV. figs. 1-14. 



Hab. — Frequent in the shells of living Cockles, Cardium 

 edule, found in the cockle-beds at Cramond. 



234. Herrmannella maxima (I. C. Thompson). 



1893. Lichomolgus maximus, I. C. T., Trans. L — pool Biol. Soc, 



vol. vii. p. 34, pi. XXXV. 



Hab. — Frequent in the shells of the Clam, Pecten oper- 

 cularis, dredged on the clam -beds to the east of Inchkeith, 

 but this Copepod was first observed by I. C. Thompson in 

 the shell of living Pecten maximics, hence its name. This is 

 not a true Lichomolgus, and as it agrees very closely with 

 Herrmannella, I place it meanwhile under that genus. 



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