CRUSTACEA. 
3 
wards, slightly grooved above, and deeply channelled below ; claws dilated, much curved, 
grooved above, fringed on each side with long, stout hairs, curved and sharp at the ends. 
Fourth and fifth pairs of legs nearly three times as long as the carapace, much smaller 
and more slender than the second and third pairs ; third and fourth joints about equal in 
length : fifth joint short, broad, flattened, incurved ; claws dilated, sharp and stouter than 
the claws of the other feet. 
Hab. Sea of Mindoro ; fifteen fathoms. 
This species comes very near the Oncinopus aranea of De Haan, Faun. Japon. (tab. xxix. 
f. 2), but its carapace is much smaller in comparison with the length and slenderness of the 
legs.' The fore-legs are much slenderer and of greater length ; the fourth and fifth pairs of 
legs are nearly three times as long as the carapace ; whereas in 0. aranea they are only twice 
the length of the carapace ; the second and third pairs of legs are nearly three and a half times 
longer than the carapace, the front is more deeply incised, and the lobes are very angular. 
The Oncinopi, like the Inachi, live in rather deep water, more particularly in coral 
bottoms, and where Keratophytes and other zoophytic forms abound. Among the branches 
of these, like aquatic spiders in their webs, these apathetic crustaceans entangle their elongated 
limbs ; they are, like the Pholci among Arachnidans, very inert and feeble, and excessively 
slow and languid in their movements. 
2, ONCINOPUS ARANEA, Be Haan. 
Pedibus quartis et quiutis anterioribus brevioribus, tarsis curvatis ; thoracis lateribus integris. 
Hab. Maria Orientalia (M. Mindorum) ; Adams. 
Fourth and fifth pairs of legs shorter than the anterior pairs, tarsi curved, sides of the 
thorax entire. 
Hab. Eastern Seas (Sea of Mindoro). 
2. INACHUS, Fabricius. 
1. INACHUS LORINA, Adams Sf White. Tab. II. f. 2. 
Regionibus ventricularibus et cardiacis convexis, bitubercularibus ; oculorum pedunculis uni-spinosis. 
Thorace trigono, supra convexo, regionibus lateralibus paullo latioribus intermedia regione ; thorace ad 
latera post oculos attenuato : spina tubereulari paullo promincntc ad antclateralem thoracis partem ; cluobus 
validis rnagnis tuberculis in linea intermedia in superiore thoracis superficie, quse tubereulis minutis granu- 
laribus et setis longis, tenuibus, sparsisque distinguitur. 
Fronte vix ad finem brachii antennarum exteriorum pertinente, profunde sulcato inter canthos in linea 
secunda, et valido jugo longitudinali in utroque latere ; apice truncato, horizontali, in medio paululum 
emargiuato, duobus terminahbus grandiuscidis lobis adornatis compluribus, rectis et crassis setis. Canthis 
integris ad partem superiorem arcuatis et paululum protendentibus ; oculorum pedunculis lateraliter directis 
extra canthos spina longiore et prseacuta in parte anteriore posita ; antennis exterioribus thorace fere dimidio 
brevioribus. 
Chelis thorace dunidio longioribus, marginibus exteriore et iuteriore fimbriatis ; longis, validis, curvatis 
