BIHANG TILL K. SV. VET.-AKAD. HANDL. BAND 11, N:o 16. 31 
3. Th. crusculum, SPEncE Bare, 1860. 
Catalogue of the specimens of Amphipodous Crustacea in the collect. of 
the British Museum, p. 333, pl. 53, fig. 2 and 3. 
Ela 
4. Th. antipodes, SPEncE Bare, 1860. 
rep: vd: Pl OJ, ME 
Hab: -Antaretie: Sea, Lat. 58" :S, Long 172” W. 
3. Th. ingequipes, DAna, 1852. 
United States Exploring Expedition. Crustacea. Vol. 2, p. 993, p. 68, 
He. 5. 
Hab. Philippine Islands. 
6. Th. elegans, n. sp. 
Diagn. Pereional segments raised, forming rolls. First 
joint of second pair of antenn& shorter than second. Carpus 
of first pair of pereiopoda with five equal sharp prominences 
along the hinder margin. Femur of seventh pair shorter than 
the following joints. Peduncle of first pair of pereiopoda as 
long as rami. Telson broad, rounded behind, longer than last 
pair of uropoda. 
Hab. Atlantic. 
Gen. 3. THAMNEUS, n. g. 
Oo 
Diagn. Head small depressed. Body broad depressed. 
First two pair of pereiopoda similar to those in Thamyris. 
Femora of fifth and sixth pair small. Seventh pair perfectly 
developed with claw-formed dactylus. ”Telson distinctly arti- 
culating with last ural segment. 
1. Th. rostratus, n. sp. 
Diagn. Lower anterior pair of head produced into a 
broad flat rostrum, longer in the male than in the female. 
Subterminal pair of flagellum of first pair of antenn&e three- 
jointed. Lower margin of carpi of first two pairs of pereio- 
poda finely serrated, hinder margin provided with three strong 
prominences in first pair, and four in second. Sixth pair a little 
