PILUMNIDAE. 51 
In the two larger specimens, the outer angle of the basal antennal joint 
falls short considerably of the end of the inner suborbital tooth, while in 
the two smaller specimens that angle reaches the end of the tooth. 
Cyclodius ornatus Dana. 
Rid: Bios 55 Pl 7, Big.s 
Cyclodius ornatus Dana, Proc. Acad. Nat. Sci. Phil., 1852, 80; Crust. U. S. Expl. 
Exped., 1852, 1, 223; atlas, 1855, pl. 12, figs. 11 a-g. 
Chlorodopsis (Cyclodius) ornata Alcock, 1898, 67, 171. 
Fakarava Id., Paumotus; outer reef; Oct. 12,1899; 1 ¢ immature. 
Papeete ; shore; Nov. 9, 1899; 1 ¢ juv. 
Tari-Tari Id.; shore, reef; Jan. 6, 1900; 1° immature, | $ juv. 
The largest specimens measure as follows : — 
@, Tari-Tari, length 6.7 mm., width 8.8 mm., proportion 13k 
@, Fakarava, length 6 mm., width 7.7 mm., proportion 1: 1.28. 
Lateral teeth N, T, and S are long, slender, and alike ; tooth E is similar, 
but smaller in three specimens; in the young ¢ from Tari-Tari(4 mm. wide) 
tooth E is not spiniform. Subdivisions of gastric region well marked, except 
in the last-mentioned specimen. Each middle lobe of the front has 8 or 
10 denticles, each lateral lobe 3 or 4. 
Fig. 11 f of Dana represents the abdomen of a. 
Cyclodius gracilis Dana. 
Pl. 1, Fig 20; Pl. 7, Fig. 7. 
Cyclodius gracilis Dana, Proc. Acad. Nat. Sei. Phil., 1852, 80; Crust. U.S. Expl. Exped., 
1852, 1, 224; atlas, 1855, pl. 13, figs. 12 @ and 0. 
Funafuti; reef; Dec. 24, 1899; 2 ¢, 1 2, all young. 
The largest specimen, the °, measures 3.8 x 5.5 mm., or a proportion 
of 1:1.44. This isa greater width than that given by Dana in the text, 
but corresponds to his figure. While strongly resembling C. ornatus, it is 
less deeply areolated (specimens of nearly equal size compared), the front 
as a whole is less prominent, its margin more finely denticulated, its outer 
lobules are smaller. 
