542. Mr. L. A. Borradaile on the 
usually without mastigobranchs, no pleurobranchs; the 
gills trichobrauch or with filaments broadened in various 
degrees; the pleura of the abdominal segments almost 
wanting; the third to fifth abdominal limbs with or without 
appendix interna, their branches broad, and the last pair of 
limbs without suture on endopodite or exopodite.” 
Subfamilies : Upogebiine, Callianassine. 
Subfamily Uroersrwz, n. 
Definition: “ Callianasside with the rostrum of a good 
size; the legs of the first pair chelate, subchelate, or simple, 
but equal and not with a very broad wrist and palm, those 
of the second pair equal, simple (except in Bigea), those 
of the third pair with the propodite of normal width; no 
mastigobranchs (except sometimes vestiges on the maxillipeds 
of the first two pairs); and the second pair of abdominal 
limbs with broad branches like the third to fifth, which have 
no appendix interna.” 
Genera: Upogebia, Gebicula, Bigea. 
Genus Upocersia, Leach, 1814. 
[ = Gebia, Leach, 1815,=Gebios, Risso, 1826, ? = Calliadne, Strahl, 1862. | 
Definition: “ Upogebiinz with the legs of the first pair 
chelate or subchelate, those of the second pair simple, those 
of the fifth pair usually not chelate, and the two branches 
of the last limb broad and stout and not longer than the 
telson.” 
Subgenera: Gebiopsis, Upogebia. 
Subgenus Gesiorsis, A. M.-Edw., 1868. 
Definition: “Species of Upogebia in which the ‘ thumb” 
is almost or quite as long as the movable finger, and there is 
no small tooth on the fore edge of the carapace over the 
antenna.” 
Species : 
Type. U. nitida (A. M.-Edw.), 1868. Nouv. Arch. Mus. iy. C. 
U. deltawra (Leach), 1815. Tr. Linn. Soc. xi. A. 
U. Darwini (Miers), 1884. ‘Alert’ Report. [=U. ttermedia (de 
Man), 1887.] I. 
U. Bowerbanki (Miers), 1884. ‘ Alert’ Report. F. 
U. isodactyla (Ortm.), 1891. Zool. Jahrb. vi. Syst.i. I. 
U. hexacerus (Ortm.), 1894. Jena Denkschr. viii. y. I. 
? U. Savignyi (Strah }),1862. Mon.-Ber. Ak. Berlin, 1861. _B. 
Subgenus UpogEsiA, Leach, 1814. 
Definition : “Species of Upogebia in which the ‘thumb? 
