A. E. Verrill on Ascidians from New England. 96 



portion of the body rises up and becomes prominent, subconi- 

 cal, rounded at the summit, and terminated bj two prominent, 

 nearly equal tubes, which are large at the base and taper rapidly 

 to the square apertures. The base is broadly expanded, with 

 a thin extended margin, and adheres very ('l<^sely. so tliar it is 

 often impossible to detach it without rupturing tho inU\uunic!it. 

 The ovaries are filled with bright red eggs and ciiiItvos. ncarlv 

 the color of blood. The surface is wrinkled and rt'ticnlated 

 nearly as in the adult, except that it is not so rough ; the margin 

 of the base is nearly smooth. 



The color is similar to that of the adult, though usually 

 lighter ; the wrinkles are generally 8. 



salmon-color and the raised interstices 

 dull reddish brown ; the upper part 

 between the tubes lighter, often sal- 

 mon-color ; the apertures bright red or 

 orange inside. 



- «..,,.. low an. 1 aaiicrcs 



the form of a whitish margin around the slightly raised central 

 part, which is oval or elliptical, and rounded above, in exjian- 

 sion, with the two small apertures on slightly raised tubes, one 

 a Httle larger than the other. In contraction the body is nearly 

 flat, the apertures sessile. In this state the integument is 

 smooth at and near the margin, and only slightly roughened or 

 indistinctly reticulated in the central parts. At a little earlier 

 stage of growth it is entirely smooth. 



The color is bright light red, deep pink-color, or blood-red, 

 the raised interstices, when apparent, are deeper red : a bnght 

 pink or red line usually connects the two apertures, which are 

 bright red ; the thin margin of the base is whitish or light 

 flesh-color, and transparent The ovaries are filled, as in the 

 older ones, with blood-red eggs and embryos. In 9 



this stage of growth it corresponds perfectly with ^^^^ 

 A. carnea Agassiz, as' figured by Binney, and ^f^^^ 

 probably with A. gutta Stimpson, though the ^JhM^ 

 latter may possibly be the similar young of some ^^^^^ 

 other species. 



ascidians, and Modiola modiolus, more common, but not abun- 

 dant,— Expeditions of 1863, '64, '68, '70 ; South Bay, Lubec, 10 

 to 15 fathoms, shelly, not rare,— Exp. 1868, '70 ; off East Quoddy 

 Light, young on smooth stones in 80 fathoms, abundant,— 

 Exp. 1868 ; Off Head Harbor, Campo Bello L, in 100 to 120 

 fathoms, shelly,— Exp. 1870 ; Grand Menan, 15 to 20 fathoms, 



