134 



BULLETIN OF THE BUREAU OF FISHERIES. 



in the colder region of the Sound. Both of these are predominantly northern species, 

 as will be seen by reference to the table on page 135, giving the ranges of some of the local 

 amphipods. It must be added, however, that the first species is taken throughout the 

 year in the surface tow at Woods Hole and has been collected along shore at various local 

 points even in midsummer. In the case of two other species, Byblis serrata and Haus- 

 torius arenarius, there appears to be likewise to some extent a preference for the western 

 extremity of Vineyard Sound. Neither of these, so far as known, are predominantly 

 northern species, and it is likely that the character of the bottom is the determining 

 factor in their distribution, particularly since Haustorius is known to be abundant on 

 sand flats near shore. Its preference for the western portions of the Sound is thus com- 

 parable with that of the lady crab, Ovalipes ocellatus. A few species, on the other hand, 

 appear from our rather meager records to occur predominantly in the warmer waters 

 of the region. Such are Lysianopsis alba, Batea secunda, and Autonoe smithi. All of 

 these have been recorded only for the immediate neighborhood of Woods Hole, and 

 their general distribution is unknown. Little stress is to be laid upon any of these 

 cases, however, especially since a number of other species which here reach their north- 

 ern or their southern limit are distributed locally without any apparent reference to 

 temperature. 



Amphithoe rubricata alone, among those species whose distributions have been 

 plotted with any degree of completeness, seems to be restricted to the littoral and 

 adlittoral zones. It is recorded chiefly from the inshore stations dredged by the Pha- 

 larope and Blue Wing, and the comparatively few Fish Hawk stations at which it was 

 taken are all in the neighborhood of land. 



The following amphipods were recorded during the Survey dredging, those taken 

 at 10 or more stations being designated as usual by an asterisk: 



PTalorchestia megalophthalma (perhaps not from 

 bottom). 



Anonyx nobilis (generic name questionable). 

 *Lysianopsis alba (chart 85). 

 *Haustorius arenarius (chart 86). 



Phoxocephalus holbolli. 



Paraphoxus spinosus. 

 *Ampelisca macrocephala (chart 87). 

 *Ampelisca spinipes (chart 88). 

 *Byblis serrata (chart 89). 



Stenothoe minuta. 



Sympleustes latipes. 

 *Calliopius lasviusculus (chart 90). 

 *Pontogenia inermis (chart 91). 



Dexamine thea. 

 *Batea secunda (chart 92). 



Gammarus locusta. 

 *Gammarus annulatus (chart 93). 



*Elasmopus lsevis (chart 94). 

 Gammarellus angulosus. 

 Microdeutopus danmoniensis. 



* Autonoe smithi (chart 95). 

 *Ptilocheirus pinguis (chart 96). 



Podoceropsis nitida. 



* Amphithoe rubricata (chart 97). 

 Amphithoe longimana. 

 Sunamphithoe" pelagica. 

 Ischyrocerus anguipes. 



*Jassa marmorata (chart 98). 



Grubia compta. 



Ericthonius rubricornis. 



*Ericthonius minax (chart 99). 



*Corophium cylindricum (chart 100). 



*Unicola irrorata (chart 101). 



*iEginella longicomis] , , , „., .... ,,. 



„ 8 .. 6 . . Kchartioa, Caprelhdaesp. ")• 



*Caprella geometrica] 



