REPORT ON THE AMPHIPODA. 223 



Fahr. Ent. Sijst. ii. 516. Lufr. Hist. Nat. Cmst. vi. 316. Mont. Linn. Tram. ix. t. 4./. 2. 

 Desm. Cow. 267, /. 45,/. 8. Cancer p., Linn. Syst. Nat. Geoff. Ins. Par. ii. 667. a-c. 

 Ireland. Presented by J. Thompson, Esq.;" 8. G. Sahinii, Leach; 9 " Gammarus Boreus, 

 Sabine, App. to Parry's Fird Voy. 229. Boi^m's Second Voy. Suppl. 88. Gammarus arcticus. 

 Leach, MSS. a. h. Adult. Baffin's Bay. c-e. Young. Baffin's Bay. f-y. Spitzbergeu. 

 Presented by the Admiralty," a species which Boeck unites with Gatniitarux locuda. 

 10. "Gammarus ornatus, Edwards, Ann. Sc. Nat. xx. 372, t. 10,/. 9-10. Crust, iii. 47. 

 Gamm Eedmanni, Leach, MSS. a-c. North America. From the collection of Lieut. 

 Redman;" 11. "Gammarus glacialis. Leach, MSS. a,b. Spitzbergen ;" 12. "Gammarus 

 acanthonotus, Zeac/i, 3ISS. a — ;" 13. " Gammarus Zete, n. s. a,h- — ;" 14. G.nmcronatus, 

 Say, presented by Say, for which see Note on Say, 1818 ; 15. " Gammarus glaber, Spinota, 

 MSS. a, h. Mediterranean. Presented by M. Spinola," a species identified by Sp. Bate 

 with Lysianassa cosfx, Edw.; 16. G. grossimanus, Mont, and 17. G. longiinanus. For the 

 last two, " Mssra grossim., Leach," and "Maera, longi., Leach, MSS.," which White gives as 

 synonyms, are now preferred as the established names, but each with the termination -maims 

 rather than -inana. B}^ Spence Bate Gammarus Boreiis, Sabine, is accepted as a distinct 

 species, with G. glacialis, Leach, and G. Arcticus, Leach, as synonyms, the remark being 

 made that " this species closely resembles Gammarus ornatus, from whicli it appears to differ 

 only in some minute details of the gnathopoda." The Brit. JMus. Catalogue likewise gives 

 as a distinct species, " Gammarus Redmanni, Leucli, MS. B.M.," with the synonym 

 " Gammarus ornatus, Wliite, Cat. Crust. B.M. 1847 (not Edwards)," and the remark, "This 

 species resembles Gammarus ornatus, but microscopic examination of the gnathopoda 

 exhibits a distinction." 



" After the Gammari the list gives " Vertumnus, Leach. Yertumnus Cranchii, Leach, 3ISS. 

 a-d. Falmouth. From the collection of Dr. Leach," since identified by Boeck with 

 Epimeria cornigera, Fabricius, 1779. After Leucothoe articulosa, Montagu's Devonshire 

 species, "Leucothoe — a, h. Mediterranean (Genoa)," is given. Then come Cerapus pelagicn.-', 

 Edw., identified with Jassa pel.. Leach ; and Gerapus falcatus, as a name for "Cancer (Gam- 

 marus) falcatus, Mont.," and "Cerapus pelagicus p., Edw. Crust, iii. 61. (not Jassa pel.. Leach)." 

 These are followed by Podocerus variegatus. Leach, and Podocerus 'pulcheUus ( = Jassa 

 pulcheUa, Leach), all the last four in White's list being now recognised as forms of a single 

 species. Corophinm longicorne, Latr., is given with various authorities, and the synonyms 

 " Gammarus long., i^a?/f. it7?if. /§//.•-■/. ii. 516. Rocnier. Gen. Ins. t. 23. f. 6. Astacus linearis. 

 Pennant, Brit. Zool. iv. 17, /. 16,/! 31. Oniscus volutator, Pallas, Spie. Zool. ix. 59 t. 4, 

 / 9." Next is " Nemertes, Leocli. Nemertes nesieoides. Leach, a-d. Britain. From the 

 collection of Dr. Leach," identified by W. Thomson, 1847, with Chelura terebrans, Vh.i]i\^ii\, 

 1839. Atylus carinatus, Fabr., and Unciola, irrorata. Say, presented by Say, conclude the 

 Gammaridse. 



The Hyperiadse are represented by " Hyperia Latreillii," Edw., with " Hiella Orhignii, Strauss," 

 for a synonym ; hj Hyperia galba, with the synonyms "Cancer ((iammarus) galba, Mont.," 

 and " Callianira, g. Leach, m. n.; " by Metoecus cyanex, Edw., with the synonyms " Talitru.s 

 Cy., Sabine" and "Hyperia Cy. Edw.," the whole of which group is united into a single 

 species by Boeck as Hyperia Medusurum, 0. F. ISIiiller, 1776. Before Metoecus cyanea; 

 the list gives Metoecus medasarum, Ivr0yer, with the synonym Oniscus Med. 0. Fabr., 

 for which see Note on Krayer, 1838. The next species is thus entered, "Primno, Guerin. 

 Primno Guerinii. a. Atlantic Ocean (S. Lat. 8' E. Long. 46°). Congo Expedition." No 

 notice is taken of this species in the Brit. Mus. Catalogue, where Guerin's tyi^e-specic^, 

 Primno niacropa, is figured and described. The list next gives Phronima sedentaria, Forsk., 

 ■M\A Plironima atlantira, Guerin; concluding the Hyperiadoe with "Typhis monoculoides. 

 Cancer (Gammarus) mon., Montagu, Linn. Trans, ii. [xi.] /. 2. /. 3. a. South coast of Devon. 



