228 



Southern Pines. Their larvse are known as " Sawyers." After 

 carefully examining great numbers of specimens in the spring, 

 Dr. Burnett had not found a single male, and all the females 

 were ready to deposit their eggs. There would seem, there- 

 fore, good reason to believe that the male dies in the autumn, 

 leaving the female to continue the species, like the female Hum- 

 ble Bee. 



Mr. Stimpson read a paper describing several new Asci- 

 dians from the coast of the United States. 



ASCIDIA. 



A. CALLOSA. Body depressed, usually oval or oblong, but vary- 

 ing in shape. Test, when free from the parasitic growth which 

 usually covers it, of a light sepia, or pale bluish color, translu- 

 cent, although thick and fleshy. Its thickness varies in different 

 parts of the body from the character of the surface, which is 

 very rugose, rising into irregular prominences and ridges. Aper- 

 tures dark purple or reddish, situated on prominent warts ; the 

 seven-rayed branchial, which is largest, being terminal, and the 

 six-rayed anal removed from it by a distance less than one half 

 the length of the body. The branchial tube within has seven 

 strong longitudinal ridges. Branchial sac finely reticulated. 

 The inner tunic, where it covers the abdomen, is marked with 

 crowded golden specks. Length often three inches ; breadth two 

 inches. This species is abundant in Passamaquoddy Bay, from 

 low-water mark to thirty feet. It is usually found adhering 

 broadly by the left side to the under surface of large stones. 



A. TENELLA. Body oblong, somewhat elongated, flaccid, ad- 

 hering by the base. Test or outer tunic soft, gelatinous, slightly 

 wrinkled, transparent, showing beneath the folds of the branchial 

 sac. Inner tunic pale yellowish. Orifices terminal, approxi- 

 mated, on short tubes, the branchial largest, with seven or eight 

 lobes and the same number of red ocelli. The anal has six 

 lobes and six red ocelli, which are much brighter colored than 

 those of the branchial orifice. Length about one inch, breadth 

 one third of an inch. 



This species was dredged at the depth of thirty-five fathoms 

 on a shelly bottom near Great Duck Island, Grand Manan. It 



