614 



BULLETIN OF THE BUREAU OF FISHERIES. 



Tkyone scabra Verrill. 

 Clark, 1904, p. 568; 1905, p. 10. 

 Rare; 5 specimens dredged by the Fish Hawk in 



Vineyard Sound in 1901; others taken by Prof. 



Bumpus in Narragansett Bay. Clark. 



Tkyone unisemita (Stimpson). 



Verrill and Smith, 1873, p. 715, 503 (Stereoderma 

 unisemita); Clark, 1904, p. 569; 1905, p. 10. 



Verrill records the taking of one specimen by 

 Packard, off Marthas Vineyard in 21 fathoms, 

 on bottom of clear sand. A half dozen col- 

 lected by Clark at Crab Ledge, in August, 

 1902, on sandy and gravelly bottom; also 

 reported by this writer from Nantucket Shoals, 

 off Gay Head, and in Narragansett Bay. 

 Three specimens dredged by the Fish Hawk 

 at Crab Ledge, 'July 23, 1907 (station 7838*); 

 two others dredged in August, 1907, near sta- 

 tion 7692*, at entrance of Vineyard Sound. 

 (These specimens, according to Dr. Clark, 

 "are remarkable for their elongated, slender 

 form; stiff body wall; and comparatively few 

 large pedicels.") A large individual, dredged 

 August 15, 1908, at the western end of Vine- 

 yard Sound, near Fish Hawk station 7719; 

 several others on August 25, 1908, near Phala- 

 rope station 33. 



Family MOLPADUD/E. 



Caudina arenata (Gould). 



Verrill and Smith, 1873, p. 715, 362, etc.; 

 Clark, 1904, p. 569; 1905, p. 12. 



Woods Hole Harbor. H. E. Webster, cited by 

 Verrill. Clark notes the existence of a speci- 

 men in the United States National Museum, 

 'labelled "off Cuttyhunk, i8> fathoms." 

 Lower half of Buzzards Bay : 8 records ; dredged 

 in 6 to 13 fathoms, on muddy bottom; i record 

 at mouth of Vineyard Sound, in 17^ fathoms, 

 sand. Survey. 



Fish Hawk stations: 7647 (i)*, 7658 (2)*, 7661 

 (4)*, 7669*; 7686 (i fragment, identified by 

 J.H.Gerould). Supplementary stations (1907): 

 7647 (i)*, 7661 (i fragment)*, 7665 (4)*; (1909): 

 Phalarope 165 (i small). 



tMolpadia oolitica (Pourtales). 



Verrill and Smith, 1873, pp. 715, 510; Clark, 

 1904, p. 570 (Trochostoma ooliticum); 1905, 

 p. 12 (Trochostoma ooliticum). 

 One doubtful specimen recorded, taken by 

 Packard 15 miles east of No Mans Land (?) in 

 29 fathoms, sandy mud. 



Family SYNAPTID^. 



Leptosynapta inhaerens (Miiller). 



Verrill and Smith, 1873, p. 716, 361, etc. 

 (Leptosynapta girardii); Mead, 1898, p. 704 

 (Leptosynapta girardii); Bumpus, 1898 c; 

 Clark, 1899, p. 21-33 (Synapta infuzrens); 1904, 

 p. 571 (Synapta inharens); 1905, p. 13 (Synapta 

 inhere its). 



Vineyard Sound, Naushon Island, etc.; burrows 

 deeply in the sand or gravel, near low-water 

 mark. Verrill. Woods Hole Harbor, near 

 entrance of the Eel Pond; abundant along 

 shores of Buzzards Bay, about Naushon, 

 Uncatena, and Nonamesset; less common on 

 the sound side; occupying clean sand or soft 

 mud, near, or at times above, low-water 

 mark. Clark. Vineyard Haven, near bridge; 

 Tarpaulin Cove; head of Katama Bay, on 

 western side. R. C. Osburn. 



Eggs and sperms nearly ripe, April 24, 1898. 

 Mead. Probably breed during June and 

 July. Bumpus. "Both species of Synapta 

 breed during the spring and early summer. 

 The sexual glands are well developed by the 

 last of April, and individuals with ripe ova 

 may be found well into August. About the 

 last of June or early July seems to be the height 

 of the breeding season." Clark. 



Leptosynapta roseola Verrill. 



Verrill and Smith, 1873, p. 716, 362; Mead, 

 1898, p. 704; Clark, 1899, p. 21-31 (Synapta 

 roseola); 1904, p. 571 (Synapta roseola); 1905, 

 p. 13 (Synapta roseola). 



Naushon Island. Verrill. Buzzards Bay, in 

 the neighborhood of Woods Hole. Clark. 

 According to Verrill the occurrence and 

 habits are similar to those of L. inh&rens. 

 Clark, however, notes characteristic differ- 

 ences of habitat, stating that L. roseola "occurs 

 on rocky or gravelly shores under stones or 

 among the pebbles, and never in pure sand or 

 mud. " He adds that he has never found this 

 species in the Woods Hole region "except 

 where there was sufficient iron present in the 

 soil to give it a decidedly rusty color." 



For breeding season see remarks under preceding 

 species. 



Perhaps not distinct from the European T.fusus Clark. 



