S63 
T)r. Lhacii’s Arrangement of the Crustacea, ^c. 
Ad hoc genus pertinet Sqnilla pedata, forte etiam ventricosa? 
Mulleri. 
Gen. 16. Caprella. 
Pedum paria secundum, tertium et quartum baud appendiculata 
ad basin ; paribus tertio et quarto spuriis, globosis, subgelati- 
nosis. , , 4 . 
Ad hoc genus Astacus atomos Pennant, Squilla lohata Muller, et 
Cancer Phasma Montagu pertinent. 
Habitat in mari inter fucos, geometric^ movens. 
The specific characters may be taken from the number and 
situation of spines in the head and back, form of the second pair 
of feet, &c. The synonyms are at this time so confused that I 
cannot venture to describe or name those in my collection, amount- 
ing to four indigenous species, 
SUBDIVISIO 2. 
Corpus latum. Oculi in verticem siti. Antenna ^-articulata, supe- 
riores longiores, articulo basilari paulo majore, secundo tertioque 
aqualibus basilari paululum minoribus, ultimo minuto penultimo 
quadruplo minore ; inferiores articulo basilari superiorum breviores 
articulo ultimo minuto. Pedes compressi valide unguiculati ; pa- 
ria duo antica poUice instructa ; par anticum minimum ad capitis 
basin adnexum, carpo articulato, secundum majus manu intus den- 
tatd, tertium et quartum coriaceo-membranacea, cylindrica, don- 
gata, spuria. Anus productus, tubereulis obscuris parvis. 
Pursa {uterus externus) valvulis quatuor imbricata. 
Gen. 17 . Larunda, 
Cyamus, Latreille, Lamarck. 
Panope, Leach. 
3 B 
VOL. XI. 
Spec. 1. 
