336 ABSTRACTS OF PAPERS. [VOL. II. 



in specimens taken from one school of fish. In one hundred 

 specimens of the winter flounder (Pseudopleuronectes ameri- 

 canns], whose eyes are on the right side, all had the left nerves 

 dorsal. In seventeen specimens of the summer flounder 

 (ParalicJithys dentatus), whose eyes are on the left side, all had 

 the right nerves dorsal. In one hundred specimens of the 

 stellate flounder (PlatiditJiys stcllatus} all had the left nerves 

 dorsal, notwithstanding the fact that fifty of these fish had their 

 eyes on the right side and fifty on the left. Although each 

 species of symmetrical teleosts examined showed about equal 

 numbers of the two possible types of optic nerve crossing, 

 the flounders showed only one type for each species. 



VII. A NEW TYPE OF BUDDING IN ANNELIDS. 



H. P. JOHNSON. 



Two gigantic undescribed species of Pacific coast Syllidac 

 produce reproductive zooids by collateral budding from a defi- 

 nite proliferating region near the posterior extremity. 



The single specimen of the larger species (Trypanosyllis 

 ingens, sp. nov.) at my command was too poorly preserved for 

 thorough study, but what I have learned about its budding 

 agrees essentially with the fuller knowledge acquired from the 

 other species. The buds numbered about thirty, all turgid 

 with nearly ripe ova. No very young buds were detected, as 

 in the succeeding species. 



Of the other species (Trypanosyllis gemmipara, sp. nov.) I 

 have several specimens, but only one with buds. They develop 

 from a proliferating region twenty somites anterior to the 

 pygidium. The advanced buds are broadly elliptical, and much 

 flattened dorso-ventrally. Each is attached at its head-end by 

 a short pedicle. The somites number 20-28, with parapodia 

 which are miniatures of those of the parent. The prostomium 

 has large eyes, a pair of antennae, and brain. There are a pair 

 of ventral nerve cords, a muscular system, septa, and large 

 paired masses of sperm cells in every coelomic chamber from 



