138 
PROCEEDINGS OF THE ACADEMY OF 
factory, and although the synonyms of the two species are indiscriminately 
adduced, (thus, e. g ., Larus parasitica, Linn, and Catharacta parasitica , Briinn., 
with Stercorarius longicaudatus , Briss., &c.,) yet in his further description he 
says of it, “ 21 pollices longus.” The common Jager never attains to this 
dimension. * 
Latham commits the error of giving Stercorarius longicaudatus , Briss., as 
the male* and Stercorarius , Briss., (without a specific name,) as the 
female of his species ; whereas, these two citations really refer to the two 
distinct species. 
The specific name 11 longicaudata” of Brisson (1760) being untenable for 
obvious reasons, — u cepphus” of Briinnich (1764) being too indefinite to 
warrant its employment, — u parasitica ” of Briinnich (1764) being used for 
the common Jager, — the first definite distinctive name for the long-tailed 
species appears to be “ Bujfoni” of Boie, (1819.) This specific appellation 
we accordingly adopt. 
Note. — The present paper completes a series of brief reviews of the 
three most important of the four subfamilies of the Laridse, — viz.: the La- 
rinse, Sterninse and Lestridinse. In conducting an investigation into the 
characters and the bibliography of these groups, with special reference to 
North American forms, it has been thought expedient to issue in advance a 
brief prodromus, so to speak, of each subfamily as soon as its examination 
was completed. Combining the results arrived at in the investigation of each 
of these groups, and making whatever additions or modifications future re- 
search may dictate, the writer hopes before long to present a more complete 
and elaborate Monograph of the North American forms of the Laridae. It is 
contemplated to present the anatomical as well as the external characters, 
both of the higher groups and of the more marked species ; the changes of 
plumage, dependent upon either age, season, sex, or pure accident, which 
examination of very extensive series may show ; together with the biblio- 
graphy of each species, and a discussion of doubtful points of nomencla- 
ture and relationship. The Monograph will be illustrated by colored plates 
of the bills, wings, feet, &c. of most of the species, showing exactly wherein 
one differs from another ; and no pains will be spared to render it a complete 
exposition of the present state of our knowledge of this family of birds. 
Synopsis of the MARINE INVERTEBRATA collected by the late Arctic 
Expedition, under Dr. 1. 1. Hayes. 
BY WM. STIMPSON, M. D. 
The collections of,Dr. Hayes, as might be expected from the thorough searfch 
to which the Arctic regions have lately been subjected, and the characteristic 
paucity of forms existing there, embrace few novelties. They possess, however, 
great interest, from having been found in great part at localities much nearer 
the Pole than any previous expeditions have succeeded in reaching on the 
American side of the Arctic circle. They include some species hitherto 
found only on the European side. And, we may add, the number of species 
collected by Dr. Hayes is greater than that brought back by any single ex- 
pedition which has yet visited those seas, as far as can be judged by published 
accounts. 
Of the localities mentioned below, Port Foulke and Littleton I. are on the 
eastern or Greenland shore of Smith’s Straits, in lat. 78£°. Cape Faraday is on 
the west shore of the same Straits, in lat. 79° 45'. Godhavn is at the southern 
end of Disco Island, in lat. 69° nearly. 
[May, 
