EXPEDITION TO POINT BAllliOW, ALASKA. 



145 



25. STEGOCEPHALUS AMPULLA (Fhippu) Goes. 



(Nee auct. 8. inflatus Kr.) 



Tear. 



1774 

 1840 

 18(1.1 



I'""" 

 1862 



Name. 



Cancer ampulla, I'hipps 



'M < .') nm ft" i .'</, M ilnc-Ed wards .. 



''<' tint's 



Stegoetphftiut amjntlta t t'> Utcck 



',<</'<, v it,i, t 'lf.tt t Miers 



n. 8., Stuxberg 



Citations. 



A Voyage, &c., App., p. 191,pl. xii, fijr. 3. 



Hifltoirc N:iliiH'lle- (ic.-* CriiNtan'r ;, iii p. 22. 



Oofv.afK. Vrlensk.-AU.ul. l-'ili h.ui.tl., \\ii. j. :,J1, i,|. xxxviii, flir. 9. 



(Part.) Forhamll. Vi-1- ,^k. SeUk., p. i .!np.) 



Ann. und 51 a^. N'al. Ilihi., ser. 4, xix, p. 134. 



Vega-Exp. Veteusk. lakt., p. 7i:i. 



Iii the synonymy above given I have only quoted such descriptions as can be undoubtedly 

 referred to this species by good figures or otherwise, as two species have been confused under this 

 name. Phipps first obtained it in the neighborhood of Spitzbergen and gave an excellent figure 

 and description. 



This form does not appear to have been observed again till the Rev. E. A. Eaton brought it 

 from Spitzbergen, in the summer of 1873, except by Goes, who collected both species at Spitz- 

 bergen, but considered the difference as perhaps sexual. 



In 1842 and 1841 Kroyer (Nat. Tids., 1 E., iv, p. 150, and 2 E., i, p. 522, pi. 7, fig. 3) established 

 the genus titcgocephaluts for an amphipod brought from Greenland, which he called 8. inflatus. Most 

 subsequent writers have considered this a synonym of Cancer ampulla Phipps, and Bell (in 

 Belcher's " Last of the Arctic Voyages," ii, p. 406), tinder the name of 8. ampulla, gives an excel- 

 lent figure of 8. inflatus, criticising Phipps's really very accurate figure as a bad one. 



Miers (loc. cit.), having obtained the two species from Mr. Eaton, was the first to recognize the 

 difference and to point out the fact that Kroyer's species was distinct from the one described by 

 Phipps. Stcgocephalus ampulla was obtained at many places on the Arctic shore of Siberia by the 

 Vega Expedition, and Stuxberg, overlooking Miers's paper, considered it a new species which he 

 proposed to call 8. kessleri though he gave no description but only an excellent figure. 



It is quite unlikely that the difference is a sexual one, as suggested by Goes (loc. cit.), because 

 Phipps figures both male and female of 8. ampulla, and there are besides well marked differences 

 in color between the two species. Moreover, S. ampulla has never been obtained in Greenland, or 

 on the eastern coast of North America, where 8. inflatus is of comparatively frequent occurrence. 



26. EUSIRUS CUSPIDATUS Kr. 



A single specimen was picked up on the beach near the station, September 12, 1882. 

 It has been observed in Greenland, Spitzbergen, Fin mark, and Franz Josef Land. 



27. RHACHOTROPIS ACULE ATA (Lepech.) Smith. 



Tear. 



1778 

 1824 



1846 



1852 

 1802 



1885 

 1 K70 

 1874 

 1*7.1 

 1877 



1881 

 1882 

 1883 



Name. 



"Ciilcatiis, Lepechin .............. 



Talitrus Etlwi-dsii, Sabino ............. ... 



,inlni:, dwi'ii .............. 



iyer ............ 



............ . ., .. , . .. 



Amphif,' ii, Adams ............ , In Snthc-i land's ' Journal of a Yu .p. ccvi. 



; '\ Sp. Bate, ....... : Cat. Aniph. Crust., p. 151. pi. xxviii. liir. 5. 



'kruii.iiisii'-iili-nii:.- (lut-s ........... Oi-iv. afK.Vetensk.-Akad.ForbanuI.xxii, p. 520. 







l^ilchliol/ 



'fft, Liitkt 11 











Tritrupi*; ([!/[ nln, Miri'S- 



ZVitropi* oaiclrtrta. SIH\IMTI: 



uculcatu, Smith 



Cmst. Ainph., p. 78. 

 'Jir Dnitsclii 1 N'onlpohn-r, ii. p. :UO, pi. iv. 

 (Xnminal liftt.) Arcti-' Manual, p. l'>4. 

 Ann. and Ma;:. Nat. Hist., scr. 4, xix, ]>. 1,'!7. 

 Donkschr. d. K. Akad. d. AViss. xxxv, p. :i'J. 

 Ann. and M:i^. Nat. Ilisi., scr. f>, vii, }>. -1^. 



; . V..t,onsk. Iftkt., pp. 704. 713, 770. 

 I '100. U. 5. Kut. Mus., vi. pp. L>22, 229. 



H. Ex. 44- 



-19 



