TI1K CIRRIPKIHA 





males with hermaphrodites. Thus, Scalpellum vulgare is 

 hermaphrodite, possessing well-developed male and female 

 organs. Nevertheless, on the inner side of the occludent 

 margin of its scutum there is a fold, over which and imbed- 

 ded in the spinose chitinous border of the scutum, a minute, 

 oval, sac-like creature is commonly found, firmly attached by 



FIG. 69. 1. Alcippe lampas ; female.. 2. The same in sectional view: 17. Horny 

 disk of attachment ; in 1, the males are visible as dark pperks on either side of 

 the upper part ot the sac ; c, ovary; h. first pair of cirri ; k. /, n. thn 

 ments of the thorax without cirri : the other three segments, benrfnj; the throe 

 pairs of terminal cirri, are very short. 8. Mate Alcippe: a, antennary jipp-nil- 

 aes ; 6, vesicula seminalis ; 0, eye ; d. testis ; *, orifice of the sac : m. pe- 

 nis. 4. Burrow of AJ&ppe In a portion of a Fuwi shell. 5. Crt/i>to}>hl'Uu# 

 minutus (female) with the outer Internment removed: e. labrum : /. pnlpi : q, 

 outer maxillae; h. rudimentary maxillipede: c, wall of *ac continued 

 Into the rim of the aperture a. b; I, m, abdominal cirri : k. appendage* of un- 

 known nature. 6. Male Cryptophialus. 7. Proteolepcu bivincta : m. mouth ; g, h, 

 peduncle and antenna; i, k, vesicula seminalis and penis. (After Darwin.) 



cement which covers the characteristic antennules of a fir- 

 ripede. Within the sac is a thorax, with four pairs of rudi- 

 mentary appendages terminated by a short abdomen. There 

 is neither mouth, alimentary canal, nor gnathites, the cavity 

 of the body being principally occupied by a great seminal 



