CRUSTACEA. 
13 
branchial regions, cylindrical and greatly elongated, with the apex thickened, femora with 
one spine at the end, tarsi entire at the apex. 
Hab. Eastern Seas. 
3. CHORINUS ACULEATUS, Edwards. 
Thorace quinque admodum longis spinis in mediana lined armato, et duabus ad utramque regionem 
branchialem. 
Hab. Maria Orientalia. 
Carapace armed with five very long spines on the median line, and with two on each 
branchial region. 
Chorinus aculeata, Milne-Edwards, Crust, vol. i. p. 316. 
Hab. Indian Seas. 
4. CHORINUS XERRUCOSIPES, Adams 8f White. Tab. II. Eig. 3. 
Thorace sex, acutis elevatis tnberculis, quinto permagno et conspicuo, parva spina ad basin utroque 
latere; duobus tubcrculis eminentibus et angularibus in utraque regione laterali, uno minore in medio 
alteroquc in parte inferiore atqne exteriore ; thoracis superlicie minutis, depressis, punctis et curvatis setis 
sparsim aggregatis obsita ; lateribus pone oculos qninquc rotundatis tuberculis. 
Fronte desinente in duabus, crassis, divergentibus spinis setis curvatis obsitis superiore canthorum parte 
tribus spinosis proeessibus armata; anteriore obtnso, sursum ct prorsum directo; medio reliquis minore, a 
posteriore profunda incisione separate, posteriore longo, deute in margine posteriore. 
Chelis lsevibus, longitudine thoracem fere exsequantibus ; secundo pari pedum longissimo ; pedibus tenu- 
ibus, cylindricis, tuberculis verrucosiformibus et setis crassis atque sparsis obsitis. 
Hab. Maria Orientalia. 
Carapace with six, sharp, elevated tubercles, the fifth being very large and conspicuous, 
with a small spine at each side at the base ; two prominent angular tubercles on each lateral 
region, with a smaller one between them, and another on the lower and outer part ; surface 
of carapace covered with minute, depressed dots, and scattered tufts of curved setae ; sides, 
behind the eyes, with five rounded tubercles. 
Front terminating in two stout diverging spines beset with curved setae ; upper part of 
orbit armed with three spiny processes, the anterior obtuse, directed upwards and forwards, 
the middle smaller than the others, and separated from the posterior by a deep incision, the 
posterior process long, with a tooth on the hind edge. 
Fore-legs smooth, nearly equal in length to the carapace ; the second pair of legs the 
longest ; legs thin, cylindrical, covered with wart-like tubercles, and coarse scattered setae. 
Hab. Eastern Seas. 
G. MITHRAX, Leach. 
1. MITHRAX DICHOTOMUS Latreille. 
Thorace granuloso, sine spinis in superficie superiore ; cornibus rostri admodum divergentibus paullo 
longioribus quam latioribus, desinentibus in duobus dentibus qui fere sequales sunt. 
Hab. Insulas Philippinas. 
E 
