CKUSTACEA. 227 



CRYPTOCCELOMA, gen. nov. 



Carapace transverse, nearly flat above, with the anterolateral 

 margins much shorter than the postero-lateral, and forming with 

 the apparent frontal margin (as viewed from above) an unbroken 

 curve. Epistoma narrow-transverse. Palate or endostome with 

 the longitudinal ridges nearly obsolete. Orbits transverse, with the 

 margins subentire, not visible from above, but concealed beneath the 

 projecting anterior margin of the carapace (see Plate XXIII. fig. A). 

 Abdomen of female 7-jointed. The basal antennal joint reaches to 

 the sub frontal process, and partly occupies the inner orbital hiatus. 

 Outer maxillipcdes with the merus-joint quadrate. Chelipedes sub- 

 equal and of moderate size. Ambulatory legs compressed. 



63. Cryptocceloma fmibriatuin. (Plate XXIII. fig. A.) 



Pilumnus fimbriatus, M.-Edwards, Hist. Nat. Crust, i. p. 41(5 (1834) ? ; 

 Hasicell, Cat. Austr. Crust, p. 66, pi. i. fig. 4 (1882). 



The carapace is transverse, its upper surface nearly flat ; the antero- 

 lateral margins are much shorter than the postero-lateral, and armed 

 only with one or two inconspicuous granules or spinules ; the pos- 

 tero-lateral margins are nearly straight, and slightly convergent 

 posteriorly ; the upper surface is obscurely granulated toward the 

 lateral margins, and the cervical suture is faintly but distinctly 

 defined. The apparent frontal margin is thin, entire, and forms a 

 continuous and unbroken line with the antero-lateral margins, the 

 orbits being altogether inferior. The margin thus formed is bordered 

 with a thick fringe of very close-set cinereous hairs, beneath which 

 are much longer hairs of a yellowish hue ; the real front, however, 

 is narrow-transverse, nearly vertically deflexed, with its anterior 

 margin arcuated and having a small median notch. The eyes lie 

 closely within the transverse inferior orbits, whose margins are 

 nearly entire. The epistoma is narrow-transverse; very faint indi- 

 cations exist of longitudinal palatal ridges. All the segments of 

 the postabdomen (which is rather narrow in the female) are distinct ; 

 the first segment only reaches to the bases of the fifth ambulatory 

 legs. The anteunules are transverse ; the basal antennal joint just 

 attains to the subfrontal lobe, and partly occupies the inner orbital 

 hiatus. The ischium-joint of the rather broad outer maxillipedes is 

 but little longer than the merus-joint, which is nearly quadrate, but 

 shallow-excavate at its antero-internal angle at the place of articula- 

 tion with the next joint ; theexognath is narrow, straight, and just 

 reaches to the distal end of the merus. The chelipedes are subequal, 

 the merus trigonous and very short ; the carpus granulated above, 

 with a small tooth on its inner margin near the distal end, the outer 

 margin fringed with very long fulvous hairs ; similar hairs border 

 the upper surface of the palm and mobile finger ; the palm is granu- 

 lated externally, and somewhat compressed ; fingers rather obscurely 

 granulated on their inner margins and acute at the apices, with 



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