198 CARNEGIE INSTITUTION OF WASHINGTON. 



southern shore; the coral reefs of the harbor, so far as these could be reached 

 from a boat; and in the mud about the mangrove patches of the Bogue 

 Islands, so far as these were practicable. In most cases the margin of the 

 mangrove extends into water too deep for collecting, the best exception 

 being the mud flat outside the outermost Bogue, which is, however, rather 

 poor in annelids. 



Leodice fucata, the "Atlantic palolo," occurs in Montego Bslv, and I was 

 especially anxious to secure data concerning its swarming. It will be remem- 

 bered that in the Dry Tortugas this swarms within three daj^s of the last quarter 

 of the June-Julj'- moon, this date occurring this year on June 28. My first 

 collecting was done on June 29, and in the coral incrusting the beach rock 

 directly in front of the residence of Mr. Henry Doubledaj'^ I found both sexes 

 of L. fucata apparently read}' for swarming, as the bodies were much distended 

 with sex products. I visited this locality early on the mornings of June 30 

 and July 1, but saw no swarming. This negative evidence is of little impor- 

 tance, as the area under observation was extremely small and the few annelids 

 in it might have swarmed and been carried away by currents before daylight. 

 Specimens collected at this time had lost their posterior ends and one indi- 

 vidual collected at Unity Hall on July 14 had regenerated a posterior end 

 about an inch long. On July 6 Mr. Edward Wallace, who has been employed 

 as a collector for several scientific expeditions to Montego Bay, stated that 

 he had seen worms swimming at the surface, but that it occurs very rarely; 

 he had not seen it this year, but others had told him that it came "last week;" 

 that it is seen along the shore (indicating the locality above mentioned where 

 I had collected the palolo) ; that the worms swim very early in the morning, 

 and that as "the sun gets hot they all fade away." This seemed to me evi- 

 dence sufficient to justify the assumption that probably the palolo swiarmed in 

 Montego Bay some time in the week ending July 2. 



Leodice fucata, L. caribcea, L. mutilata, and Nicidion kmhergii are common 

 in the incrusting coral lying on the hard beach rock along the shore. Leodice 

 culehra and Lysidice sulcata occur in the same localities, but are rarer. Leodice 

 unifrons was very widely distributed, living in tubes on the bottoms of stones 

 or in sandy mud in all parts of the bay. Drilonereis attenuata occurs rarely 

 and a few specimens of Lumhrinereis cingulata were found. The only other 

 lumbrinereid was Arabella setosa, collected at Reading Landing. Marphysa 

 regalis was found near White House, and M. nohilis was collected in the mud 

 near the outer Bogue. It is evidently rare, as three days digging failed to 

 bring up more than the one incomplete individual found on the first day. 

 In sponges near Sandy Point I collected a new species of Leodice, to be de- 

 scribed under the name of L. spongicola. It is evidently allied to L. denti- 

 culata Webster ( = Eunice conglomerans Ehlers), but is much smaller and of an 

 entirely different color. 



Report of the Cerion-Br ceding Experiments, by Paul Bartsch. 



The reported loss of the Tortugas colonies of the Bahama cerions, which 

 were said to have been wiped out b}^ the hurricane, made it necessary to re- 

 visit the Bahamas to secure additional breeding material for our heredity 

 experiments. The desired adolescent specimens of Cerion viaregis were 

 obtained along King's Road, Bastian Point, South Bight, Andros, with con- 

 siderable difficult}^, because the local population has shifted its agricultural 

 efforts to the ground occupied by the Cerion colonies in our 1912 visit. The 

 colony of Cerion viaregis, in its native habitat, is therefore less flourishing 

 to-day than it was nine years ago. 



