556 GEOFFREY SMITH. 
excretory organ is a maxillary gland. The spermatozoa 
are filiform, and are transferred to the female in horn-shaped 
spermatophores. There is no concentration of ganglia in the 
thoracic or abdominal region. 
The eggs are deposited immediately after fertilisation by 
the female and hidden singly under stones, ete. 
There is no complicated metamorphosis, the young hatch- 
ing out with the essential structure of the adult. 
Order Anaspidacea (Calman 9). 
Diagnosis of the single Order is the same as that of the 
Division. 
Family I. Anaspididz (Thomson 7). 
The thorax is composed of eight distinct somites. The 
eyes are pedunculated. First antenne of male without 
sensory modification. There is a well-developed antennal 
scale. The mandible has a cutting blade, a setose lobe and 
a molar expansion. ‘The palp of the first maxilla is a non- 
setose papilla. 'lhe first thoracic limb has gnathobasic lobes, 
a slender lamellar exopodite, and two branchiz attached to 
the coxopodite. The anterior thoracic limbs are clearly com- 
posed of eight segments. The last thoracic limb is uniramous. 
The pleopods are all biramous with a small flabellate endopo- 
dite, except the fifth pair, which are without the endopodite. 
Genus 1. Anaspides (Thomson 7). 
The thoracic segments are all nearly equal in length; 
the abdominal segments are slightly longer. ‘The body is 
carried straight without any dorsal flexure. The antennal 
scale is shorter than the first two joints of the endopodite. 
The mandibular palp is without an exopoditic lobe. 
The first thoracic limb has two gnathobasic lobes on the 
coxopodite. ‘The sixth abdominal segment and the telson are 
as long as the two preceding segments. The telson is shorter 
than the uropods. 
