REPORT ON THE AMPHIPODA. 589 



Gen. 4. Tavria, Dana, 1852, has one species, Taiiria macrocephala, Dana. 



Gen. 5. Hyperiella, n. g., in tlius defined : — 



" Body smooth. Head large, deeper than long, flattened anteriorly, antennae as in I[yperia, 

 Pereional segments even. Two first pairs of pereiopoda subcheliform, carpal processes as 

 in Hyperia. Carpi of third and fourth pairs not dilated. Fifth pair longer than the 

 following, with elongated metacarpus. Two last pairs with short metacarpi. E|:>imerals 

 distinct. Uropoda elongated. Telson mediocre." This genus has three species, " 1. H. 

 antarciica, n. sp.," with a definition; "2. H. fusca, Dana, 1852;" ".3. ? H. pupa, A. 

 Costa, 1853." 



Gen. 6. Parathemisto, A. Boeck, 1870, receives six species, " 1. P. ab>jssorum, A. Boeck, 

 1870;" "2. P. oblivia, Kroeyer, 18-38;" "3. P. compressa, A. Goes, 18G5;" "4. P. 

 loiujipes, n. Type. Hyperia oblivia, Spencb Bate (nee Kroeyer), 1862;" "5. P. trifjona, 

 Dana, 1852;" "6. P. japonica, n. sp,," of which a definition is given. 



Gen. 7. Euthemisto, altered from Themisto, Guorin, 1828, which is preoccupied, receives the 

 following six species, "1. E. Gaudichaudi, Guerin, 1828;" "2. E. libellula, Mandt, 

 1822;" "3. E. antarcHca, Dana, 1852;" "4. E. Ghierini, Spence Bate, I860;" "5. E. 

 hispinosa, A. Boeck, 1870;" "6. E. Nordenskioldi. n. sp.," which is defined. 



Gen. 8. ThemideUa, n. g., is thus defined : — 



" Body smooth. Head mediocre, deeper than long. First three joints of flagellum of first pair 

 of antenna; provided with olfactory processes. The second pair like that in Hyperia. 

 First two jjairs of pereiopoda subcheliform, with narrow, gauge-shaped carpal processes. 

 Carpi of third and fourth pairs not dilated. Fifth pair are the longest, the following 

 decreasing in length. ]\Ietacarpi of last three pairs somewhat elongated. Epimerals not 

 distinct. Uropoda long and narrow. Telson mediocre." This genus receives the single 

 species, " Th. Steenstrupi, n. sp." 



Gen. 9. Phronimopsis, Claus, 1879, receives two species, "1. Ph. spinifer, Claus, 1879;" "2. 

 Ph. Sarsi, n. sp.," the new species being as usual defined. 



Fam. 9. Pheonimid^, Dana, 1852, is divided into two subfamilies. 



" Subfamily 1. Dairellinte. Diagn. Head almost round. All the pereiopoda are simple, 

 walking legs. Epimerals marked but not articulated." 



" Gen. 1. Dalrella, n. g.," is thus defined : — 



" First and second pairs of pereiopoda simple, with straight, short dactyli. Carpi of all the 

 pereiopoda elongated. Peduncles of uropoda very broad, with distant rami. Telson very 

 short and broad." It receives two species, " 1. D. caUfornica, C. Bovaltius, 1885," the 

 reference being to Bovallius' Parap)hronima caUfornica; "2. D. latitgima, n. sp." 



" Subfamily 2. Phronimince. Diagn. Head conical. Fifth pair of pereiopoda are transformed 

 into a strong prehensile organ. Epimerals coalesced with the pereional segments." 



" Gen. 2. Phronima, Latreille, 1802," receives five species, " 1. Ph. s&icrdaria, Forskal, 1775 ; " 

 "2. Ph. atlantiiM, Guerin-Meneville, 1836;" "3. Pli. Novx Zealandix, Powell, 1877;" 

 "4. Pli. spinosa, n. sp.;" "5. Ph. Colletti, n. sp." 



"Gen. 3. PhronimeUa, Claus, 1872?" has the species "1. Ph. ekmgata, Claus, 1863;" "2. 

 Ph. filiformis, n. sp." 



Family 10. ANCHYLOMEEiD.ffii. 



Gen. 1. Anchijlomera, M.-Edw., 1830, with six species. "Gen. 2. Phmsina, Ri.sso, 1826," 

 receives the species "1. Ph. semimdata [semilunata], Risso, 1822;" "2. Ph. N/cefnms, 

 H. Milne-Edwards, 1830;" "3. Ph. longibpina, Spence Bate, 1862." Gen. 3. Primno, 

 Guerin-Meneville, 1836, has the one species " P. maeropa, Gudrin-Meneville, 1836." 



Fam. 11. "PnoECiD^, Spence Bate, 1860 [1862]." 



Gen. 1. Phorcus, M.-Edw, 1830, receives the species, "1. Ph. Reynaiuli, H. IMilne-Edwards, 

 1830;" "2. Ph. hrjaloeephalus, Dana, 1852;" "3. Ph. Loveni, n. ap." Gen. 2. Lycaiopsis, 



