UEPORT ON THE AMPHIPODA. .593 



Bovallius from Hyperia; " Euthemisto Gaudichaudi, Guerin, 1828," with tiie synonjin 

 " Euthemisto [Themisto] Gaudicliaudii, Gu6rin;" "Euthemisto lihellula, Mandt, 1822. 

 PL 46, fig. 90-96;" "Euthemisto hispinosa., A. Boeck, 1870. PI. 46, fig. 97-103;" 

 "Euthemisto antarctica, Dana, 1852;" "Euthemisto Jfm-denskiolJi, C. Bovallius," 1887, 

 with the synonym " Eutlicmisto NordeiisldiildU, C. Bovallius," 1887, the observation being 

 made that " possibly the Hyperia Cyanex Spence Bate (not Sabine) is identical with this 

 species;" " Anclu/lomera ahhreviata, Gui^rin-M^neville, 1836;" " Anchylomera antipodes, 

 Spence Bate, 1862 ;" " Tryphama Malmi, A. Boeck, 1870," with the synonyms " Tryphana 

 Malmii, A. Boeck," and " Lycssa Malmii, G. 0. Sars ; " " Trypihxna Nordenskiijldi, C. 

 Bovallius, 1887 ; " " Thamyvis antipodes, Spence Bate, 1862," 



As far as Bovallius has himself observed, the Arctic and Antarctic Hyperids do not include 

 species of the Paraphronimida3, Phronimidse, Phorcidae, Uxycephalidae, Pronoidce, Scelidse, 

 or TyphidiB. From his whole review he draws the conclusions, that : — 



" 1 :o) the genus Euthemisto (and possibly also Hyperia) is common to both the arctic and the 

 antarctic regions ; as it has only few representatives in the Northern and Southern temperate 

 regions and none in the tropical, its centra of development are most likely to be searched 

 for in both the frigid zones ; 



" 2:o) the genus Lanceola is a true arctic form with only a few emigrants in the Northern 

 temperate region ; 



" 3:o) the genera Hyperia and Parathemisto are cosmopolites, probably to be found in all the 

 seas ; 



"4:o) the genus Cylloptts is a true antarctic form with its centre in the American Antarctic 

 Ocean ; 



"5:o) the genus Hyperiella is a connecting link between Hyperia and Euf}(e7nisto, with same 

 centre as Cyllopus ; 



" 6:o) the genus Hyperoche is an arctic form with its centre in the European Arctic Ocean; 



"7:o) the genera Vibilia, Thaiimatops, Mimanecies and Trypluena are occasional immigrants 

 into the arctic region from the tropical and temperate regions, probably to be found 

 occasionally also in the antarctic region (except Mimonectes) ; 



"8:o) the genera Anchylomera and 7'hamyris arc occasional immigrants into the antarctic 

 region, not likely to be found in the arctic realm." 



The Challenger collection, I may observe, shows the genus Lanceola to have an immensely wider 

 range than that given above. One specimen was obtained, along with a specimen of 

 Phronima, in lat. 50° 1' S.; another specimen was taken in lat. 8° 37' S. Bovallius himself 

 records Lanceola curticeps from Cape Verde Islands and Lanceola felina from Tristan da 

 Cunha. The genus Hyperoche is represented at the Cape of Good Hope. 



For Hyperia medusarum, 0. F. Midler, the following synonymy is given : — Pulex cancriformis 

 antennis brevissimis, H. Strom, 1762; Cancer medusarum, O. F. Miilier, 1770; Gamrnarus 

 medusarum [O. F. Miilier], J. C. Fabricius, 1779; Phronima, Latreille, 1818; Talitrus 

 cyanex, Sabine, 1824; "Hyperia Lesneniii, Latreille," in Desmarest, 1825, and in Milne- 

 Edwards, 1840 ; Hyperia sprinipes, A. Boeck, 1861 [1860] and 1872 ; Hyperia exulans, var., 

 A. Goes, 1866 [1865]. 



To Hyperia Latreillei, M.-Edw., 1830, the synonyms assigned are Lestrigoniis exulans, Kiiayer. 

 1838; Hyperia Latreillei, M.-Edw., 1840; "Hyperia galha [Montagu] Spence Bate," 

 1862 ; " Lestrigonus Kinahani. Spence Bate," 1862 ; Hyperia exulans, Kroeyer (e. p.). 

 Goes," 1805; "Lestrigonus Kinahani. Spence Bate," in Bate and Westwood, 1868; 

 "Hyperia iiudusarum [0. F. Miilier.] A. Boeck," 1872. 



To Hyperia galha, Montagu, 1813, the synonyms given are "Hyperia galba, Montagu," 1813, 

 (which should rather be Cancer Gammaru-t galha); "Lestrigonus exulans. [Krooyer]. Spence 

 Bate," 1862; "Hyperia medvrsarum [0. Fabricius] Spence Bate," 1862; "Lestrigonus 



(ZOOL. CHALL. EXP. — PAKT LXVII. — 1887.) Xxx 75 



