A survey of the possible shrimp-fishing areas in the Gulf of Maine was made by the Woods Hole Oceano-graphic Institution under the leadership of Johan Hjort. Using otter trawls of the sort used in the Norwegian shrimp fishery, at 20 stations, it was found that the faunal community just above mud bottom (in depths of 120-228 m.) consisted chiefly of 5 spp. (Sebastes marinas, Merluccius bilinearis, Urophycis tenuis, Hippoglossoides platessoides, Glyptocephalus cynoglossus) and the shrimp, Pandalus borealis. At one station crabs (Geryon) outnumbered shrimp. Odd examples of 19 spp. (Myxine glutinosa, Squalus acanthias, Raia senta, R. stabuliforis, R. scabrata, Clupea harengus, Artediellus uncinatus, Cyclopterus lumpus, Lumpenus lampetraeformis, Cryptacanthodes maculatus, Pollachius virens, Gadus callarias, Melanogrammus aeglefinis, Urophycis chuss, U. chesteri, Enchelyopus cimbrius, Brosme brosme, Macrourus bairdii, Lophius americanus) were also caught. The center of the shrimp population in summer lies in the deep bowl west of Jeffries Ledge, the abundance being correlated with the amt. of organic matter in the mud. Merluccius was also plentiful there, presumably in pursuit of shrimp. The stock of Merluccius was dominated by the yearling[long dash]an age group whose habitat in the Gulf of Maine was previously unknown. The other 4 abundant fish were chiefly 2 years old or more and were not restricted to any particular locality. Length-frequency studies of Sebastes (with previous information) show the average length to be 7.5 cm. for yearlings, and 18 cm. at the age of 2 years. Yearlings of Merluccius average about 17 cm. and the 2-year olds about 25 cm. The estimated combined weight of shrimp and fish in the bowl west of Jeffries Ledge at depths greater than 150 m. averaged 576 lbs. per 1.5 sea miles with an 82-foot trawl, or 55 lbs. per acre of bottom had the 6-inch stratum next the sea floor been included.