CIRRIPEDIA. 



The Cirripedia collected during the cruise of the 

 "Michael Sars" of 1910 to a large extent belong to the 

 pelagic forms: five species of Lepas and one of Concho- 

 derma. Deep-sea forms are represented in the collection 

 by four species: one of Poecllasma and three of Scal- 

 pellum. All the forms belong to species previously 

 described. 



The Atlantic species of Cirripedia are now generally 

 well known. The deep-sea investigations carried out by 

 the "Challenger", the "Travailleur", the "Talisman", the 

 "Albatross" etc., have greatly contributed to our knowledge 

 of this group and the distribution of the species, especially 

 as regards the North Atlantic. 



The following species were collected by the "Michael 

 Sars":- 



/. Lepas anaiifera Linne. 



Stat. 61. June 20, 1910. Lat. 37° 7' N., Long 38° 

 34' W. Surface. Numerous specimens, large and small, 

 attached to drifting wood. 



Near Stat. 74. July 3, 1910, near St. Johns. Four 

 specimens of different sizes. 



Observations. This species is common in the 

 Atlantic and in the Pacific as well. 



2. Lepas anserifera Linne. 



Near Stat. 67. June 27, 1910. Lat. 40° 17' N., 

 Long. 50° 39' W. Surface. One specimen, attached to 

 "Sargasso" weed at the surface. 



Stat. 69. June 29, 1910. Lat. 41° 39' N., Long. 

 51° 4' W. Surface. One small and two very small spe- 

 cimens, attached to a little black stick; a few specimens 

 attached to a floating piece of Fucus. 



Observations. A common species in the Atlantic, 

 the Pacific, the Indian Ocean etc. 



3. Lepas pectinata Spengler. 



Stat. 10. April 19-21, 1910. Lat. 45° 26' N., Long 

 9° 20' W. Surface. One specimen attached to a bird's 

 feather. 



Stat. 25. May 7, 1910. Lat. 35° 36' N., Long. 8° 

 25' W. Surface. Numerous small specimens, with L. 

 fascicularis. 



Stat. 31. May 10, 1910. Lat. 33° 47' N., Long. 

 8° 27' W. Surface. Small and very small specimens, on 

 a piece of cork. 



Stat. 69. June 23, 1910. Lat. 41° 39' N., Long. 

 51° 4' W. Surface, One very small specimen attached 

 to a floating piece of Fucus (with a few specimens of 

 L. anserifeia). 



Stat. 86. July 16, 1910. Lat. 47° 29' N, Long. 

 30° 20' W. Surface. Numerous specimens attached to a 

 piece of pumice. 



Stat. 91. July 22, 1910. Lat. 47° 32' N., Long. 

 16° 38' W. Surface. Quite a colony of specimens of 

 different sizes, in company .with L. fascicularis. 



Stat. 92. July 23, 1910. Lat. 48° 29' N., Long. 

 13° 55' W. Surface. A few very small specimens attached 

 to a ball formed by L. fasciculaiis. 



Observations. This species is common in the 

 Atlantic and in the Pacific, flourishing in warm seas 

 especially. 



4. Lepas HUH Leach. 



Stat. 56. June 11, 1910. Lat. 36° 53' N., Long. 

 29° 47' W. Surface. A group of small, most of them 

 very small, specimens attached to a turtle. A group of 

 specimens of Conchoderma virgatum, var. chelouophila, 

 was associated with those of L. HUH. 



Observations. A goose-barnacle common in the 

 Atlantic and also abundant in different regions of the 

 Pacific. 



5. Lepas fascicularis Ellis & Solander. 



Stat. 25. May 7, 1910. Lat. 35° 36' N., Long. 8° 

 25' W. Surface. Small specimens attached to different 

 objects: pieces of cork, of pumice, etc., associated with 

 small specimens of L. pectinata. 



Stat. 91. July 22, 1910. Lat. 47° 32' N., Long. 

 16° 38' W. Surface. Large fine specimens attached to 



