320 THE FAUNA OF THE EXE ESTUARY. 



at Exmouth in clean line sand, generally in the same kind of soil 

 ns PhyUodoce teres (stations 5, 8, and 10). I also found it at Teignmouth 

 under similar circumstances. The specimens agree with Oersted's 

 original description {Ann. Dan. Consper., 1843, p. 30), " papillis 

 caudalibus subglobosis," and not with Malmgren's figure and de- 

 scription (Nord. Hafs. Ann., 1865, p. 102 and Tab. XV. Fig. 37), "cirri 

 anales lineare-fusiformes elongati." The head also resembles Oersted's 

 figure rather than that figured by Malmgren. 



EULALIA VIRIDIS, MilUrv. Two specimens, from Orcombe Eocks, at 

 the mouth of the estuary. 



AUDOUINIA TENTACULATA, Montcigu. One specimen only, from Orcombe 

 Eocks. The entire absence of this species from the estuary itself is 

 noteworthy. 



Heteuomastus filifor]\iis, Ckqvcredc. A few specimens of this 

 species were taken in the sand west of Salthouse Lake (sta. 10). 



Pygospio seticornis (Oersted) and Pygospio elegans, Cla2Ktrkle, 

 ( Vide Mesnil, " Etudes de Morphologic externe chez les Annelides," Bull. 

 Sci. France et Beige, xxx., 1897, p. 85.) 



The distinction between these two species depends almost entirely 

 upon the presence or absence of a pair of branchiae on the second 

 setigerous segment, these branchire being present in P. setieornis and 

 absent in P. elegans. As, however, these branchiie seem often to 

 be lost in preserved specimens, the distinction between the two species 

 cannot be satisfactorily made with such material. Unfortunately 

 I was unacquainted with Mesnil's paper on the subject at the time 

 when the specimens were obtained, and as in the preserved collections 

 specimens from the same locality sometimes showed and sometimes 

 did not show the branchiae in question, I have in the lists included 

 all under the name P. setieornis, though I have some reason to think 

 that both species are represented in the estuary. 



The tubes of Pygosino were abundant in the clean hard sand of 

 the estuary (stations 5, 8, 9, 10, and 13), but were not seen in the 

 hard sand at Polesands, where the conditions are marine. 



Nerine CONIOCEPHAla, Johnston. This species is closely allied to, if 

 not identical with, N. foliosa, Aud. et Edw. The Exmouth specimens 

 agree with Johnston's description in having the front of the head bluntly 

 conical and pointed, not rounded as described by Cunningham and 

 Eamage {Trans. Roy. Soc. Edinh., 1888) for N. eoniocejjluda, and by de St.- 

 Joseph and Mesnil for N. foliosa. The anus is not surrounded by cirri. 



Several specimens were obtained in the sand west of Salthouse Lake 

 (sta. 10) and in the liard clayey mud to the north of it (sta. 11). 



