602 CRUSTACEA. 



geri, 6 antici didactyli, manubus parvulis, 4 postici filiformes, ciliati, non annu- 

 lati. Branchiae foliosae. Abdomen dorso uni-spinosum. An hujus sedis est? 



FAM. III. ETJCOPID^l. 



G. EUCOPIA, Dana. Carapax non rostratus, fronte integro. Pedes thoracic! 

 elongato-palpigeri, palpis natatoriis. Maxillipedes 2di 3tii et pedes Imi mono- 

 dactyli et subprehensiles. 



SlCYONIA CARINATA, Edwards. 



Plate 40, fig. 1, animal, natural size. 







Harbour of Rio Janeiro ; common. 



Length, three to four inches. Colour, olive-green clouded with 

 white; sides of abdominal segments with elevated parts whitish ; outer 

 caudal lamellae having a large bright smalt-blue spot ; thoracic legs, 

 flesh-red ; second antennae, with alternate bands of yellow or flesh-red 

 and dark brown, about ten oblong bands in all. Shell nearly calca- 

 reous. Beak very short and reflexed, bifid at tip, and having two 

 teeth a short distance from the apex ; also, on carina, two teeth near 

 middle of back, and one on posterior third. Thoracic legs quite 

 slender. 



EDWARDS, Ann. des Sci. Nat., xix. 344, pi. 9, f. 44 ; Crust., ii. 410. 



CARINATUS. 



P. setifero affinis. Rostrum squamd antennali parce longius, paulo 

 simu)8V/)n, extremitate styliforme, parce recurvatum, apice vix altius 

 qttam dorsum, supra 7S-dentatum, infra 3-dentatum. Flagella an- 

 tennarum internarum articulis duobus precedentibus non longiora. 

 Pedes 5ti tis non graciliores. 



Near P. setiferus. Beak slightly longer than the basal scale of outer 

 antennae, somewhat sinuous, styliform at extremity, apex hardly 



