A. E. Verrill— Marine Fauna of New England Coast. 371 



taceus, in various stages, from very young ones up to those 

 having tbe adult char) sloped. Of these Mr. 



Emerton made an excellent series of drawings. The adults of 

 ating species were dug from the sand just below low- 

 water mark, at Naushon I.,* by our party. The largest of 

 these had U-shaped tubes, 28 to 31 inches in length and over 

 an inch in diameter in the middle. In each tube there was 

 usually a crab (Pinnixa ckcelopterana St.), associated with the 

 worm. These tubes show, very beautifully, the way in which 

 their size is continually increased by the occupant, which is 

 ineapable of emerging from it. The worm makes longer or 

 shorter slits in the parehinent-like tube, wherever it is to be 

 sing for this purpose the sharp, stiff, lance- 

 ts), and after spreading the tube, 

 from within, to the desired extent, it closes up the opening 

 by means of a fusiform patch (like a "gore" or "gusset"), of 

 the same material as the original tube, but differing slightly in 

 ■color or luster, so that when the tube is cut open these neat 

 patches show very distinctly on its inner surface. 



From the sands of Naushon, at Hadley Harbor, our party 

 also procured several living examples of an European shell, 

 Tdlimya (or Moniacuta) ferruginosa, not before found on our 

 ■coast. It was associated, at low-water mark, with living speci- 

 mens of M. bidentata and another species of the family Kelliadse, 

 (hrbula conlracta, etc. Drawings were made of the animals of 

 all these by Mr. Emerton. 



Of Gastropod veligers, about twenty species were taken in 

 the surface nets. Some of these occurred in vast numbers, but 

 I have not yet been able to identify more than half of the species. 

 Among those recognized are Anachis avara, Axtyris lunula, Tri- 

 J"i'is nigrocincta, etc. One of the largest and most interesting 

 was that of a Natica. This had the velum divided into four 

 long, narrow lobes, beautifully marked with brown at the tips. 

 Many of these were kept till they lost the velum and developed 

 the characterstic foot of Natica. The species is uncertain. 



In a region that has been so thoroughly dredged in past years 

 as Vineyard Sound, it was not to be expected that many new 

 forms would be found, unless among the more minute species, 

 or in those groups not hitherto studied on our coast. Yet one 

 new Planariamf of large size and with conspicuous colors, was 

 taken, as well as various undescribed Ehabdoccela and Annelida. 



nil" .\lYl 



