78 BIOLOGICAL, SURVEY OF 



LITERATUEE 



CusHMAN, J. A. 1908 Foraminifera of the Woods Hole region. Proc. Boston 

 Soe. Nat. Hist., vol. 34, pp. 21-34, 1 pi. 



1918-1931 The Foraminifera of the Atlantic Ocean. United 



States Nat. Mus. Bull. 104, no. 1, pp. i-vii, 1-111, 39 pi., part 2, 

 pp. i-vii, 1-111, 18 pi., 3 fig., part 3, pp. i-viii, 1-149, 26 pi., part 4, 

 pp. i-x, 1-228, 42 pi., part 5, pp. i-v, 1-55, 8 pi., part 6, pp. i-viii, 

 1-129, 22 pi., part 7, pp. i-vi, 1-79, 18 pi., part 8, pp. i-ix, 1-179, 

 26 pi. 



CuSHMAN, J. A., AND OzAWA, YosHiAKi 1930 A monograph of the foramini- 

 feral family Polymorphinidae recent and fossil. Proc. United States 

 Nat. Mus., vol. 77, no. 6, pp. 1-185, 40 pi., 2 fig. 



Flint, J. M. 1899 Recent foraminifera. A descriptive catalogue of specimens 

 dredged by the U. S. Fish Commission steamer Albatross. Rept. 

 United States Nat. Mus., 1897, vol. 1, pp. 249-349, 80 pi. 



PORIFERA 



Order MONAXONIDA 



The sponges of the Order Monaxonida included in this work 

 were taken in the Mt. Desert region during the summers 1926 

 to 1931, inclusive, and represent, in all probability, a complete 

 sample of the monaxonid sponge fauna of the shallow water 

 of this region. Most of the species were dredged many 

 times and, in some cases, in considerable abundance without 

 any new forms being found. A comparison with the lists of 

 sponges which have been found in adjacent regions also con- 

 firms this conclusion. 



With one possible exception, no new species of sponges 

 were discovered. However, the geographic distribution of 

 several species was extended southward from Greenland and 

 Iceland to the shore of continental North America. It is also 

 shown that the sponge fauna of this region has much greater 

 affinities with the more northern or Arctic fauna than it does 

 with that farther south. Only two of the species — Microciona 

 prolifera and Cliona celata — are found as far south as Beau- 

 fort, N. C. Seven (possibly 9) — Halichondria panicea, Cha- 

 lina oculata, Mycale ovulum, Homoeodictya palmata, Tedania 

 suctoria, Suherites compacta {=concinnus), Polymastia ro- 

 busta, Myxilla sp. ?, and Reniera sp. 1 — are found as far south 



