CRUSTACEA. 657 
Leptomera LAtTR. (Proto Leacu). Seven pairs of feet, arranged 
in a continuous series. Fifth pair of feet shorter, furnished with a 
small claw, slightly moveable. Three pairs of branchial vesicles at 
the bases of the second, third and fourth pairs of feet. Abdomen 
small, uniarticulate, with four appendages, elongate, biarticulate. 
Sp. Leptomera pedata, Gammarus pedatus ABILDGAARD, MUELLER Zool. 
danic. Tab. rot, figs. 1, 2, GUERIN Iconogr., Crust. Pl. 28, fig. 3. According 
to KroryrER Leptomera ventricosa DESMAREST, Squilla ventricosa MUELL. 
Zool. dan. is the female of this species. To it belongs also Phthisica 
marina SLABBER Natuurk. Verlust. Pl. xX. figs. 1, 2. 
The genus Proto of DESMAREST (Crust. p. 276) rests on imperfect observa- 
tions, and appears not to differ from Naupredia Latr. 
Section IT. Genuine Amphipoda. Head distinct from the first 
segment sustaining a pair of feet. Segments of trunk mostly fur- 
nished with a distinct lateral part (epimeron). Mandibles supplied 
with palp. ‘Tail made up of several segments, furnished with bifid 
feet. Body mostly compressed, arcuate. 
Comp. Minne Epwarps Ann. des Sc. nat. XX. 1830, pp. 353—399, and 
H. Kroryer Grenland’s Amfipoder. Kjébenhayn, 1838. 4to. (printed sepa- 
rately from vit. Th. der Kongel. Danske Videnskabernes Selskabs naturvid. 
og mathem. Afhandlinger, p. 229, &c.) 
Family XXII. Hyperina or Uroptera. Foot-jaws small, not 
covering the cibarious organs. Head large. Last abdominal feet 
at the apex of tail mostly resembling a flabelliform fin, foliaceous. 
Oxycephalus Epw. 
Pronoé GUERIN. 
Typhis Risso, Epw. 
Sp. Typhis ferus Epw. Ann. des Sc. nat. 1.1. Pl. 11, fig. 8, GuéRiIN Jconogr., 
Crust. Pl. 27, fig. 8; in the Atlantic near the Canary Islands. This genus 
and the preceding are remarkable for their long inferior antenne, which 
are bent at three acute angles. 
Phronima LATR. Antenne two short. Fifth pair of feet elon- 
gate, terminated by a hand broad, didactylous. Tail elongate, 
with five distinct segments, the sixth segment coalesced with fifth. 
= Sp. Phronima sedentaria Latr., Cancer sedentarius Forsk., HErBst Krabben 
und Krebse, 11. p. 136, Tab. 36, fig. 8, Later. Gener. Crust. et Ins. Tab. 11. 
figs. 2, 3; this animal is found in the Mediterranean, where it lives in a 
kind of gelatinous keg, open at both ends, probably from a dead Beroé. 
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