546 
Gen. 2. Spnaroxotus. Brandt. 
2d, 3d, 4th, and Sth joint of antenna short, 
roundish, equal; the 2d rather longer than 
the rest, the 5th and 6th nearly equal. 
Gen. 3. Sperostrertus. Brandt. 
Lower lip with a semilunar pit in the middle 
and without any tubercles. Eyes many, in 
lunate tubercles. 
Gen. 4. Sperora@vs. Brandt. 
Lower lip with two transverse oblong tubercles 
separated by a transverse groove. 
Gen. 5. Sprrocycuistus. Brandt. 
Lower lip flat, with tubercles placed in an im- 
pression in the centre of its : 
Fam. 2. CraspEpOSOMADZ. 
Body cylindrical (striated), consisting of many 
joints, each formed by a single piece, an- 
tenne slender. Legs 48 pairs or more. 
Eyes many, in a linear series or triangular 
patch. 
Gen, 1. Craspeposoma. Leach. 
Body elongate, depressed. Rings with a com- 
pees lateral edge. Eyes in a triangular 
teh. . 
ee Gen. 2. Cytinprosoma. Gray. 
Body elongate, quite cylindrical, with very in- 
distinct longitudinal strie. Eyes in a small 
oblong, kidney-shaped patch. 
Gen. 3. Reasta. Gray. 
Body subcylindrical, striated longitudinally. 
Eyes in a nearly linear patch. 
Gen. 4. Campata. Gray. Platyulus, 
Gervaise. 
Body rather depressed. Eyes in a double line 
on each side of the back of the head. 
Fam. 3. PotypEsMIp2. 
Legs 31 pairs. Eyes none or only single tu- 
bercles, situated just on the outer side of the 
tentacles. 
Gen. 1. Potypesmus. Latr: 
Body elongate, depressed : rings slightly edged 
at the sides, forming an interrupted margin. 
Antenne with rather long joints. 
Gen. 2. Fonraria. Gray. 
Like Polydesmus, but the margin of the body 
is rude, and forms a continuous edge. 
Gen. 3. Srenonra. Gray: 
The body slender, the rings subquadrate, with 
toothed extended lateral edges. 
Gen. 4. Srosarea. Gray. 
Body slender, subcylindrical ; the lateral mar- 
gin forming a very slight ridge. 
Fig. 305. 
Fam. 4. GLomerip2. 
Body depressed; rings 11; semi- 4 
lunar. Eyes 8, placed in an 
arched line on each side of 
the head. Antennz inserted 
on the upper front part of the 
head. , 
Gen. 1. Gromeris. Latr. 
The first dorsal ring striated in 
the middle of the side. (Fig. 
305.) ar 
MYRIAPODA. 
Gen. 2. Lamisca. Gray. G 
Brandt. 
Fam. 5. ZepHRONIADA. a 
Body depressed ; rings 12; semilunar. 1 
many in a circular group. Antenne on 
side of the head. ( Fig. 306, abcd.) 
Fig. 306. . 
Se . 
e@ f eS RB 
ED 
Gen. 1. ZepHronia. Gray. 
Brandt. ‘ ' 
Antenne 6-jointed, penultimate joints : 
last largest, oblong, rounded at he 
( Fig. 306.) ie 
Gen. 2. Spuozrotuerra. Brandt. Seph 
part. is. iwi 
Antenna 7-jointed, 6th joint nearly « 
last joint smallest, truncate at the tip. — 
Fam. 6. Potyxenipz. 
Body depressed; rings 6; soft, s 
with a tuft of scales on each side; feet 
Eyes many in a group. ie 
Gen. 1. Potyxenus. Latr. ( Fig. é 
Fig. 307. 
Polyxenus lagurus, 
Order II. CHILOPODA. L. 
Antenne of 14 joints or more. §& 
the body flattened, each bearing 
pair of feet. + 
Fam. 1. Scuricermpz. “ 
Antenne filiform, very long. eg V 
Eyes reticulate. +" 
. Gen. 1. eee I k 
eet 15 pairs or more. - 308, OX 
livida C 7 
