CLASS I. CRUSTACEA. 
109 
et Insect, i. 65. Sphferoma serrata. Leach, Edin. Encycl. vii. 405. 
Trans. Linn. &c.xi. 303. — Sapp, to Encycl. Brit. i. 427. 
** Superior antenna with a very large peduncle. Claws simple. 
j. Genus 25. iF.GA. Leach. 
y es ^ ar ge, granulated, oblong, oblique, marginal : tail with its ap- 
Pondages foliaceous. 
'P- h JEga emarginata. Tail with the last joint acuminate; the inte- 
rior lamella internally obliquely truncated, externally emarginated. 
S a emarginata. Leach, Trans. Linn. Soc. xi. 370.- 
Lr 'u. i. 
427. pi. 21. 
-Supp. to Encycl. 
*** Superior antenna with a moderate peduncle. 
Genus 2G. EURYDTCE. Leach. 
- v l es distinct, simple, lateral : head as broad as the first segment of the 
body. 
p ' Eu. pulchra. Tail with the last joint semioval: body cinereous, 
Var 'egated with black. 
IJe P enus 27. LTMNORIA. Tjcach. 
g '' ar as broad as the first segment of the body: eyes granulated. 
jJ 'G Eim. terebrans. Body cinereous : eyes pitchy black. 
noria terebrans. Lcacli, Edin. Encycl. vii. 433 — Trans. Linn. Soc. xi. 
I n j — Supp. to Encycl. Bril. i. 428. 
a "tts the British ocean, perforating buildings of wood, piles, &c. It 
is 
s bire. It generally produces seven young ones. 
jj Genus 23. CYMOTIIOA. Fabr., Dald., Leach. 
ea(t narrow and small: eyes obsolete: body with the first segment 
g botched to receive the head, 
(■ G Cym. (Eslrum. 
^othoaCEstrum. 
ponimon at the Bell-roc k, and on the coasts of Suffolk and York- 
Fabr. Leach, Supp. to Encycl. Brit. i. 4-28. 
C. Tail furnished with two seta. 
Earn. VII. Apseudiadje. 
•& 07 ,. GenUs . 29 - APSEUDES. Leach. 
a Pex' X ^ 0 ' 11 * e< ^ : s ' x se g rncn ts ; the last largest, armed at the 
a Pl>endices : feet fourteen; the anterior pair with afinger 
Jb the second pair compressed and dentated; the third and 
s>c) t f/ 1 allkc ail( l simple ; the JiJlh with a double nail ; the sixth and se- 
ar * , s P ur i° us : the superior antenna with a biarticulated peduncle 
§p 1 CCl att b e apex with a jointed seta; the inferior antenna bifurcate. 
g r0 0 ^ r ^ ai l )a > nostrum acute, with three excavated longitudinal 
es. 
