1852.] 7 
scabri-rugato et breviter hirsuto, tarso curvato, canaliculato. Hab. Valparaiso? 
Lon OO". De 
BERNHARDUS #@QUIMANUS.—Carapax sparsim pilosus, regione antica non ob- 
longa, fronte ad medium angulato, vix rostrato. Oculi cylindrici, aciculum an- 
tennalem longitudine zaquantes, squama basali apice producta et 3—4-denticulata. 
Antennarum externarum flageilum infra elongaté ciliatum. Pedes superficie 
granulati partim sparsim hirsuti, marginibus hirti; antici equi, mediocres, manu 
breviter elliptica, parce latiore et longiore quam carpus, non costata, marginibus 
subspinulosis, carpo supra subspinuloso et hirto. Pedum 4 sequentium tarsi 
bene canaliculati, infra ciliati. Had. Valparaiso. Long. 1%”. 
BERNHARDUS CRINITICORNIS.—Frons medio parce angulatus. Regio carapacis 
antica non transversa. Oculi mediocres, aciculo antennali paulo longiores, 
squama basali apicem rotundata. Flagellum antennarum externarum infra crini- 
tum non ciliatum. Pedes antici valde inzqui, nudiusculi, manu majore oblonga, 
paulo longiore et latiore quam carpus, scabricula, spinulis subtilissimis 4—5-se- 
riatis, margine inferiore fere recto, carpo minute spinuloso. Pedes 2di 38tii laxé 
pubescentes, non spinulosi, tarso non canaliculato. Had. portu ‘“ Rio Janeiro.’? 
Long. 9—10/”. 
Pacurus Evopsis.—P. punctulato affinis. Oculi fronte carapacis valde longi- 
ores, crassiusculi. Flagellum antennarum externarum nudum, articulis versus 
antenneze extremitatem latere interno gibbosis; aciculum parvulum. Pedes antici 
sat inequi, manu majore carpoque oblongis, extus spinulosis et hirsutis. Pedes 
2di 3tii marginibus multo hirsuti, articulo 5to spinulis supra paulo armati, tarsis 
totis subteretibus, undique divaricaté hirsutis. Had. ad insulam “Upolu”? et in 
freto ** Balabac.”?? Long. 24/’. 
CLIBANARIUS STRIOLATUS.—Regio carapacis antica fere quadrata. Oculi 
graciles, margine carapacis antico vix breviores, squama basali angusta, acu- 
minata, bidentata. Pedes antici subaqui, manubus brevibus carpisque supra 
spini-tuberculatis et pilosis, manu sinistra maris paulo majore. Pedes 2di 3tii 
supra infraque paulo hirsuti, multis lineis brunneis longitudinalibus ornati, tarso 
subterete, non breviore quam articulus penultimus, sinistro 3tii paris articulo 
5to extus parce convexo, acie rectangulata superne instructo. Had. insula 
‘‘ Tongatabu,”’ et archipelago “ Viti.”” Long. 2”. Paguro lineato, Edw. pro- 
pinquus. 
CLIBANARIUS BRASILIENSIS.—Regio carapacis antica paulo oblonga. Rostrum 
bene triangulatum. Oculi gracillimi, margine carapacis antico non breviores, 
squama basali valde truncata et brevissima, pilis longis, margine apicali transverso 
instructa. Pedes antici equi, manu dextra parce majore. Pedes 2di 3tiique 
persparsim hirsuti, subnudi, tarso perbrevi, articulo Sto paris 3tii extus sub- 
complanato, parce convexo, supra subcarinato. Pedes colore pauci-lineati. 
Hab. portu “ Rio Janeiro.”?. Long. 14”. 
Clibanarius globosi-manus (Pag. globosi-manus, D.) P. corallino, Edw. adhuc 
partim descriptoan differt? In specimine globosi-mani non attrita, pedes 
2di 3tii marginibus hirsuti non nudiusculi. Clibanariis aliis totis nobis lectis 
differt, supeficie externa articuli 5ti sinistri paris 3tii omnino hirsuta. 
II. MecatopipEa. 
The question of the maturity or immaturity of the Megalope and that of their 
true place in the natural system, still remain in doubt. Without touching on 
these points, at this time, 1 propose to describe some new genera and species 
pertaining to the group. 
The species, however diverse, agree in the structure of the abdomen and its 
caudal appendages; in the position of the four antennze between the eyes; in the 
articulations of the outer antenne; in the inner antenne folded longitudinally or 
obliquely either side of the beak; in the general form of the outer maxillipeds; 
in the large size and lateral position of the eyes without orbits; in the general 
structure of the legs; and in their habits. The beak is either horizontal or 
