Pit foo M Wee, 
2 eS 2 
‘ : f : a | ile 
tang 
Ret - ; 
ie 
ete 
ite 2. 
Sone 
Airy fed “2 
“i i oe 
eae ial 
fg: y; i 3. 
BAN A, 
fy ae 
ge { 5. 
2. 
it 6. 
i 6a. 
, ce 
8. 
; a 
10. 
10a. 
- Foot of same. : | 
~Acroperus leucocephalus.. 
_Post-abdomen. 
Alona quadrangularis, 
Female. A?., antennale; Lb., labrum; Ma., mandible; Pp. -a., | post 
abdomen; An.,anus; F. c., musculus flexor caudalis; HE. @; us- 
culus extensor caudalis; A. g., anal gland; n. aie nutritive 
globule in embryo; t., tail of embryo; sae BI III, IV, V, Bek 
pairs of feet of embryo; mx., maxilla of embryo; at? +, antenne 
of embryo; at?., antennules of embryo; H., heart; sh. g., shel 
gland; ov., ovary; Md. m., muscle of mandible; At?, m., muscle 
of antenna; H., eye; Sce. g., supra-cesophageal ganglion; He f, 
pigment fleck. 
Brain, eye and pigment fleck of § same. 
Pleuroxus procurvus. | 
Female. 
~ 
Alonella excisa. 
Female. ‘ 
Shell of same. 
Antenna of same. . 
Alonopsis latissima. Female. . 
s latissima var. media. Female. ‘ 
Camptocercus macrurus. a 
Lower angle of shell of same. 
