Some Littoral Mites of Millport. 133 
palps (Fig. 2, PLP.) were not brought into use. The female continued to walk 
about carrying the male beneath. The mandibles (Fig. 2, Mps., in retraction) 
of the male were seen inserted deeply into the genital opening of the female, 
and between them was clasped a “spermatic capsule” (spermatophore), as 
described by Michael. The epigynium of the female (Fig. 4, Epa.) was 
raised during this process, and the mandibles of the male were inserted so 
fat that the spermatophore was almost out of sight and completely within 
the endogynium or “vagina” (cf. Winkler, 1888, fig. 22). When the 
mandibles were withdrawn the capsule, now shrivelled and almost empty, 
remained attached to them. It was removed and examined, and was 
found to contain a few “spermatocysts” exactly similar to those figured 
by Michael in the case of Lelaps vacua (1892, pl. 33, fig. 28). 
The males in captivity died a few days after coition. The females 
survived for several weeks. There is no evidence at present as to whether 
under natural conditions this union would terminate the existence of the 
Fre. 5. Outlines of egg of HL. immanis. 
(a) entire ; (b) shell atter hatching. 
individual of either sex. Both were subjected to the same conditions as 
regards moisture and food. 
Number oF Eaes Lain. 
A mated female, isolated on 4th September (1911), had laid- two eges by 
oth September. Two females placed together on 2nd September had, between 
them, produced four eggs by 4th September, and no more by 5th September. 
On this date a male was placed with them, and by 6th September eight more 
eggs had been laid. Apparently two eggs were deposited, in succession, at 
each laying. The eggs required a considerable amount of moisture, otherwise 
they soon shrivelled. It was found convenient to supply this moisture by 
enclosing with the mites a piece of dark coloured rotting wood damped with 
sea-water. Upon this material most of the eggs were laid, and against its 
surface they were easily seen. 
HATCHING. 
This took place mainly at night, or when the vessel containing the eggs, 
a corked glass tube, was kept in the dark. The egg-shell was split longi- 
tudinally at the emergence (Fig. 5,6). The newly-emerged larve displayed 
