REPORT ON THE TUNICATA. 309 



(C), arruiiged with regularity as follows : — A, C, B, C, A. 

 KupfFer and Traustedt describe their specimens as having 

 twelve large and twelve small tentacles placed alternately. 



The dorsal lamina in the Manx specimens is usually a 

 plain membrane ; the free edge may be irregular, but it is not 

 actually toothed. The dorsal tubercle is very variable. It 

 is usually cordate in outline, and has the aperture placed 

 laterally, or even posteriorly. In one specimen, one of the 

 horns was observed to give off a short curved branch directed 

 inwards (see PL VI, fig. 6). 



Eugyra glutinanSf Moller. 



Cynthia glutiyians, Moller, Index Moll.. Gronlmid, p. 21. 



Molgula tubulosa, Forbes, Brit. Moll., v. i, p. 36. 



Molgula arenosa, Aid. and Han , Ann. and Mag. N. H. 1863, 



p. 160. 

 Eugyra arenosa, Hancock, Ann and Mag. N. H , 1870, p. 367 

 Eugyra glutinans, Traustedt, Vid. Medd. f. d. Naturh. For. 



Kjobnh., 1880, p. 428. 



This widely diffused species is fairly abundant off the 

 Halfway Rock, between Port Erin and the Calf of Man, and 

 also off Spanish Head, Isle of Man, at depths of ten to 

 twenty fathoms. The specimens vary considerably in size, 

 although most of them are small (1 cm. in diameter). They 

 are covered by a light yellowish sandy investment, containing 

 many fragments of shells. The largest specimen was 2 cm. 

 in greatest length. 



This species has been fully described by Kupffer * and 

 by Traustedt. f It has been found on the coast of Denmark, 

 Norway, Holland, France, the Faroes, Greenland, Siberia, 

 and at various localities on the English coast. It has not 

 been previously recorded from the Isle of Man. 



* Jahresbericht. 

 t Oversigt over de fra Danniark, etc., AscidiiB Simplices, loc. cit. 



