Q**»xs9 
- 
reaching nearly, or quite, to the extremity of the eyes. "These species make a 
well characterized group, which we name Pag"uristes. 
Another small group is singular in having a rostriform appendage to the 
ophthalmic joint; they are the **Pagures armés? of Edwards, including P. 
eniles and P. custos, the former the Cazceer Diogenes of Herbst. Besides this 
distinction, the fingers of the hands are acuminated, as in the Bernhardi, and have 
calcareous tips, although the species are not right-handed ; also, the 2d joint of the 
outer antennz is complete on the upper side, and there is no moveableappendage 
or acicle (a name we give to the so-called palpus, in allusion to its form). With 
these distinctions, the group is entitled to the rank of a genus, which may be 
named Diogenes. 
The remaining species of Paguri are similar, in having the fingers of the hands 
more or less spoon-shaped ;—with no rostriform appendage to the ophthalmic 
segment between the eyes;—the outer antenne bearing a moveable acicle ;.—the 
flagellum of the outer antennz naked ; the 2d joint of the base ofthe inner antenna 
not reaching to extremity of eyes ;—the feet of the 4th pair subcheliform with 
the scabrous area on the hand, lateral and broad. 
The great majority of these have the tips of all the fingers corneous. But a 
few have these tips in the larger hand calcareous, besides being peculiarly smooth 
and neat in the appearance of the limbs, and naked, or nearly so, with the shell 
more calcareous than usual. They have the left hand much the larger; yet 
unlike those species with corzeous tips to the fingers that are strongly left- 
handed, the front margin has a small salient point at middle. Of the species with 
calcareous tips to the fingers, I make the genus CaZcizws. "This genus includes | 
the old species P. tibzcen, Gaimardii, elegans, &c. 
"The remaining species, still the larger part of the whole family, constitute the 
genus Pagurus. The following is a synopsis of the subdivisions proposed. 
FAM.I. PAGURIDJE. | 
Antenne intern: mediocres, articulo primo brevissimo. —Maxillipedis palpus 
externi flagello multiarticulato instructus. Species aquaticz vel littorales. 
Subfam.I. PacumiNz.—Abdomen asymmetricum. 
I. Pedes 4ti subcheliformes. Abdomen ad basin duobus paribus appendicium 
infra non instructum. Antennarum externarum flagellum nudum vel 
nudiusculum. 
Qo0.6,L 1 Aunulum. ophthalmicum mon. rostriferum. Antenna interne aciculo mobili 
ee M.» instructa. 
— — — . . QGen.1. Bzgnwmanpus, D.—Pedes antici depressi ; digiti acuminati ; manus dextra 
major, apicibus digitorum calcarea. Macula scabra manus 4tzx 
submarginalis, linearis. 
Gen. 2. PaAcuRus, Fabr.—Manus anticze sive depressze sive compress&; digiti 
plus minusve instar cochlearis excavati, apicibus cornei; manus 
sinistra sepius major.  Macula scabra manus 4tz lateralis, lata. 
Frons medio sive truncatus sive acutus. 
Gen. 2. Carnciwvs, D.—Manus compresse, sinistra major, apicibus digitorum 
calcarea et instar cochlearis optime excavata. Frons medio acutus. 
Pedes lzves, nudi vel nudiusculi. 
