ALCIPPE LAMPAS.

Fig. 16, Pupa of male Alcippe lampas, viewed laterally; _a_,

antennæ, _c′_, eyes attached to the apodemes; above these

the single eye of the mature male may be distinguished.

17, Abdomen of the same; _p_, posterior end of thorax; _q_,

abdomen; _r_, caudal appendages.

18, Male of Alcippe lampas immediately after the metamorphosis,

the ventral surface being uppermost, but the specimen has

been in some way distorted, as the lobe (_i_) ought to

project on the opposite side; _a_, antennæ of the pupa;

_g_, _h_, lateral lobes; internal organs not yet formed;

orifice at upper end (_i_) not visible; scale same as for

the pupa, fig. 16.

19, Male of Alcippe lampas, when fully mature; scale same as in

last figure (18) and as in fig. 16.

_a_, antennæ of pupa.

_b_, vesicula seminalis.

_c_, _eye_, (seen in fig. 16 above the eyes of the pupa,

_c′_.)

_d_, testis.

_e_, lower transverse muscle.

_f_, upper transverse muscle.

_g_, _h_, lateral lobes of the external covering, answering

to the sides of the peduncle of the female.

_i_, terminal lobe on the ventral side of the orifice,

probably corresponding with _a_ in fig. 1, Pl. 22.

_k_, orifice of the tubular sack.

_l_, oblique muscles on the ventral side of the sack.

_m_, probosciformed penis, shown exserted; _m′_ portion

within the tubular sack.

A Monograph on the Sub-class Cirripedia (Volume 2 of 2) The Balanidæ, (or Sessile Cirripedes); the Verrucidæ, etc., etc. · 第 363 / 417 题