In his Die Mediterranen in Wales (1935) Eickstedt coined the term "Atlantid" to denote a phenotype common in the British Isles. According to Bertil Lundman, it is synonymous with Joseph Deniker's earlier postulated "North-Occidental" or "North-Western" race, and also Czekanowski's "Northern-Western" subracial taxonomy. In the 1940s Lundman adopted the term "North-Atlantid" to cover these earlier terminologies, and further popularised it in his The Races and Peoples of Europe (1977).
Physical Appearance 
The Atlantid or North-Atlantid, as described by Eickstedt and Lundman, is recognised as having a pigmentation between the Nordic and Atlanto-Mediterranid stock of the Mediterranean. While the pigmentation of the eyes is light, the hair in contrast is dark brown. In morphology however the Atlantid is considered to be indistinguishable from the Nordic or Atlanto-Mediterranid (dolichocephalic, leptoprosopic and leptorrhine). The Atlantid is essentially a "Nordic-Mediterranean" blend, a term appearing in the literature of Earnest Hooton, but can differ in its exact gradient of pigmentation. Although usually recognised as intermediate between Nordic and Mediterranean, Deniker discussed what he saw occasionally as stronger Nordic or Mediterranean gradients.
Geography and Origin 
Lundman notes that the North-Atlantid is mainly distributed across Britain, but also in some other North Sea coastal areas. As a group, this phenotype is particularly associated with Ireland. Indeed, it is sometimes referred to as the, 'Irish Type'. Within Ireland, it is strongest in the south eastern counties, particularly near the coast. There are other areas of Ireland where this phenotype is well represented too, such as Counties Mayo, Donegal and Kerry. Again, this type will be most numerous in coastal areas of those counties.
There are two theories on the origin of the Atlantid phenotype, according to Lundman's theory the North-Atlantid came about through only a partial northern depigmentation:
"...To be sure the North-Atlantid race is a native race, but more southerly accentuated and more pigmented. This is a result of a less cold, but damper climate and contact with the more pigmented European races."
Other anthropologists however have proposed that the North-Atlantid is result of Nordics mating with Mediterraneans.
- Race and Racism: An Introduction (see also) by Carolyn Fluehr-Lobban, Pages 127-133, Publication Date: December 8, 2005, ISBN 0759107955
- The Races of Europe by Carleton S. Coon
- Lundman, 1943, p. 134; 1977, p. 33.
- Eickstedt, 1935; Lundman, 1946, p. 17.
- Lundman, 1977, p. 33.
- Deniker, 1900, p. 328; 343.
- Joseph Deniker, The Races of Man, W. Scott, 1913 (reprint).
- Bertil Lundman, Jordens Människoraser och Folkstammar, Kärntryck, Åstorp, 1943.
- Bertil Lundman, Nutidens Människoraser, Uppsala, 1946.
- Bertil Lundman, The races and peoples of Europe, IAAEE, 1977.