590 A. E. VerriU — Timicata and Molluscoidea of the Bermudas. 



Color of adult, reddish brown to pale red ; the borders of the 

 apertures bright red or rose-red, sometimes lined with a paler tint. 



Greatest diameter, 35 to 50«'"; breadtli, 20 to 25"""; height, 25"^™; 

 length of oral tube, 10 to 13"^"; diameter at end, 5 to 6'"™. 



Common in shallow water, adliering to stones, dead shells, etc, 



Halocynthia Riiseana (Traust.). Gen. Cynthia Savigny, 1816. non Fabr., 1808. 



Cynthia Riiseana Traiisteclt, Vestindiske Ascidi* siinplices, Videusk. Meddel. 

 naturh. Foren. Kjobenhavn, 1882, p. 43, pi. v, fig. 13, pi. vi, fig. 19 (gill). 



This species is allied to the last, but the tunic is flask-shaped and 

 has longer and more divergent siphons, not so far apart, the anal one 

 being dorsal and divaricate. The gill has 6 pairs of strong folds and 

 6-8 stigmata to a mesh instead of 4 or 5 ; tentacles 12, pinnate ; 

 anus bordered with longer papillae ; intestinal bend not so broad. 

 Test in formalin is yellowish white ; tunic pink. 



One specimen, 1898. St. Thomas, W. I. (Traust.). 



Microcosmus miniatus, sp. nov. Fig. 8. 



Test orange-red, or bright red, rather thick and tough, leather}'', 

 ovate, somewhat flattened, attached obliquely by the base and one 

 side, surface in the adults rudely wrinkled, often smoothish in the 



young; apertures far apart, on low ver- 

 ruca?, which, in the adult, are covered with 

 rude folds and irregular nodules, as con- 

 tracted. 



Tunic red, rather muscular, the muscle- 

 bands slender and forming a distinct net- 

 work. Siphons not very long, divergent. 

 Tentacles large and strongly pinnate ; 



Figure 8.— Microcosmus min- about eight to ten larger ones alternate 

 iatus, left side, partly dia- . , , , 



gramatic; b, braucliial si- With Others about one-half as large; the 

 phon ; c, atrial siphon ; e, larger ones are bipinnate, the pinnse being 

 oesopbagns ; s, stomach ; (' ^ , i i i ■, ^ 



intestine; I, liver; g, gonads; lai'ge and branched; there are also others 

 cl, duct ; X, anus, a, Oral of still smaller size. Ciliated organ (fig. 

 aperture, d, Dorsal tuber- „ ,x , , , i i . ,' • , 



cle and aperture of ciliated 8; d) has the two lobes Strongly spiral 

 organ, g, Group of gonads and incurved. 



rom rig sue. Branchial sac has 9 plications on each 



side, that next the endostyle being smaller than the rest. The dorsal 

 lamina is a simple and plain band. Intestine forms a rather narrow 

 bend, the two portions nearly or quite in contact for some distance. 

 Liver large and bilobed. 



