INSECTS. APTERA 120. Monoculus. 
769 
In fea Water. Mull, Entom. n, 5. tab. 2. Jig, 18, 19. 
Swims on it’s back. Shell with a convex fulvous back. 
Shell ovate pellucid and cmarginate behind : laft joint of 
the antennas fubulate. 
Mull, Entomoji.f. 46. n, 6, tab. z. Jig. 5 — 8. 
Found in ditches among duck-weed. 
§hell gibbous : antennae bent back. 
'us. 
Shell ovate, emarginate behind, and ending in 2 briftles. 
Inhabits Rivers. Mull. Entomoft. p. 46, tab. Z.fig, 9 — 11. 
Antennte iirctehed forwards .• legs 4. 
o'«r. 
^’’“Heatus, 
Shell dilated linear : antennx incumbent. 
Mitll. E.ntomajl, p. 47. n. 8. tab, t. Jig, 16—17. 
In llinking fea-water. Fore-legs branched. 
Shell globular unarmed ; legs 6. 
In frefh water. Mull. Entom. tab, l,fig. i, 2. 
Antennae obtufe : Jhell very pellucid. 
Shell oval-oblong and briftly behind. 
Baker Micro/, tab. 12./^. 2fj. Mull. Ent. t, t,f, 3—7. 
pellucid and terminated by briftles. 
F. Shell univalve ; eyes placed beneath 
Shell pellucid : legs 4. 
In Ditches. Musi. Entomojl. tab. to. Jig. I, 2, 
Eyes fphrcrical remote deep black, with 4 capillary circles round 
them. ’ 
* K 
‘^PbitsHs Shell gibbous : legs 8. 
In Rivers. Baker Micro/c. p. 76. tab. 37, 
’^'ger. With 6 legs. ' 
Slabb. hiicro/c. tab. (s.Jig, I* 
G. Shell bivalve : eyes 2, placed on the back. 
Shell orbicular, the future lunate and toothed behind : tail 
(■ubiilatc and very long. 
Seha Mtif. 3. tab, ty.Jig. Knorr, Delia tab. F. i. 
Kaunpb. Japan, tab. 13./^’. 8. Sch/eff. Mon. 176. tab. 7. 
Inhabits India, and is the largeft known infeift, growing fome- 
tiiTies to 4 feet long. 
VOL. III.— 5 Ji Csdops, 
