BllACHYURA. 
183 
Eriphiid^. 
Pilumnus Jloridanus, lacteus^ agassizi, nudifronSf and granulimanus, spp. nn., 
id. 1. c. pp. 141-143, Straits of Florida. 
Melybia, g. n. Allied to Melia ; antero-lateral margin 3-toothed ; basal 
joint of outer antennae firmly soldered ; feet spiniilose. M. thalamitaj sp. n., 
Florida Straits, 16-37 fathoms : id. 1. c. pp. 144 & 146. 
PoRTUNIDiE. 
Liocarcinus^ g. n., proposed for Portunus marmoreus (Leach) on account of 
the aberrant form of its maxillipeds and its naked carapace, which almost 
entirely conceals the first abdominal joint : id. 1. c. pp. 146 & 146, foot- 
note. 
BatJiynectes, g. n. Antero-lateral teeth spiniform, separated by consider- 
able intervals ; no frontal median tooth ; hiatus of orbit widely open ; meros 
joint of outer maxillipeds not projecting anteriorly. B. longispina & hrevi- 
spina j spp. nn.. Straits of Florida, 100-120 fathoms : id. 1. c. pp. 146 & 147. 
Achelous spinicarpus and tumidtdus, spp. nn., id. 1. c. pp. 148 & 149, Florida 
reefs. 
Poy'tunus puher (L.) proved to be a dangerous enemy to oyster-beds by La- 
font & Fischer, Act. Soc. L. Lord, xxvii. p. 77. 
Catometopa. 
CaRCINOPLACIDtE. 
Two new subfamilies, Euryplacince and Eucratopsin(Js , are 
proposed by Stimpson (1. c. p. 152), in both of which the vergal 
canals are closed, though in the first the anterior corners of the 
posterior segment of the sternum is exposed, instead of being 
covered by the abdomen, and the first joint of the abdomen is 
narrow and very little developed. In the latter, this joint is well 
developed, and much broader than the second, which is much 
narrower than the third. To it belong Eucratopsis (Smith) = 
Eucrate (Dana), and Panoplax, g. n., resembling Pmiopeus, with 
deflexed front, broad and depressed carapace, elongated hands, 
&c., containing a sp. n., P. depressa. East and Middle Keys, 
Tor tu gas, Florida. 
PlNNOTERID.®. 
Pinnoteres ascidiicola, on Ascidia canina, and P. pectnncud, in the shell of 
Pectunculusx Hesse, Ann. Sci. Nat. (6) xv. p. 30-38, spp. nn., Northern 
France. 
OXYSTOMA. 
CALAPPIDiE. 
Acanthocarpusj g. n. Carapace without lateral expansion ; fronto-orbital 
region very broad, occupying more than half the width of the carapace ; a 
strong tooth about the middle of the postero-lateral margin ; chelipeds with 
