CLASS I. CRUSTACEA. 
97 
Genus 31. PROCESSA. Leac-h. Nika . Risso. 
■Anterior pair of legs, with one side didactyle, the other armed with a 
simple claw : second pair unequal, didactyle, slender ; one very long, 
"nth the wrists and tore arm m any-jointed ; the other shorter, with 
the wrists many-jointed ; other legs terminated by simple claws. 
*P- 1. Pro. canalicvlata. Base of the rostrum with one tooth ; inter- 
tnediate lamella of the tail longitudinally canaliculated. 
tocessa canaliculata. Leach, Mai, Podoph. Brit. lab. 41. 
The thighs of the third and fourth pairs of legs are spinulose be- 
fleath; at the base of the rostrum there is an elevation dividing it 
from the thorax. 
The above species, which forms the type of the genus, was dis- 
covered at Torcross, on the southern coast of Devon, by Montagu. 
^ r tRPs 3. — External antenna inserted below the internal ones; interior 
ones with two setre, one placed above the other. ( External lamella 
°f the tail composed but of one part.) 
a ' internal antenna: with the superior seta excavated below. Claws 
spinulose. 
^ Genus 32. PANDALUS. Leach. 
nte riorpair of legs adactyle ; second pair didactyle, unequal. External 
double palpi with the last joint of the internal footstalk longer than 
g the preceding joint. 
■ P' !• Pan. annulicomis. Rostrum ascending, many-toothed, apex 
totched; inferior antennas annulated with red, and internally spinu- 
P ° Se - 
a ndalus annulicomis. Leach, Malac. Podoph. Brit. tab. 40. — Trans, 
linn. Soc. xi. 346. — Suppl. to Enc.ycl. Brit. i. 421. 
Genus 33. IIIPPOLYTE. Leach. 
0, ‘ > ' anterior legs didactyle : external double palpi with the last joint of 
o tle internal footstalk shorter than the preceding joint. 
' T Hip. Durians. Rostrum straight, with two teeth above and below; 
lli> a ^ ove tmd beneath die eyes with one spine. 
PPolyte varians. Leach, Trans. Linn. Soc. xi. 347. — Supp. to Encycl. 
‘d- i- 421. — Mai. Podoph. Bril. tab. 38 .fig. 6 — 16. 
* m Wts the rocky shores of the south of Devon. It varies much in 
j 0 ° Ur > being often found red, green, and blueish green. 
Internal antennw with the. superior seta not excavated. Claws simple. 
Si ^ enus 34. PENfEUS. Fabr., Lair., Bose, Leach. 
- anterior legs didactyle : external double palpi, widi five exserted joint?, 
Sp is obtuse. 
: Pen. trisulcatus. Thorax trisuicated behind ; rostrum descend- 
multidentate above. 
