14l* y\. A.-E. Malaril un the [ujiucnce of Lijhi on 



anal tergite scarcely covering the valves, which have their 

 borders prominent and deeply compressed ; stemite larg3 and 

 angnlar. 



Le(js \ox\^ and slender. 



Number of segments 5o. 



Lcngtii about 70 millim., width 5"5. 



Loc. Ki Dulau (Ki Islands). 



This species, of which a single female s|>ecimen was 

 obtained, in colouring resembles Sp. samjuineus of C Koch 

 (Die Myriop. i. p. IG, fig. lo). It, however, at least differs 

 in its long legs and antennje and prominent anal valves. 



EXPLANATION OF PLATE L\. 

 Fty. \. Stronyylosovia Gervoisii {hucas). Dorsal view, X 1.^. In this 



tigure the anterior anprles of the keels are too squared and the 



le<r3 are wrongly placed and wrong in number. 

 Fiff. 1 a. Ditto. Left copulatory foot from below. 

 I'if/. '2. ^Stromjylosoina Guerinii, Gerv. Left copulatory foot fr(jni 



below. 

 Fi(/. 3. Stenoniu tuherom, sp. n. Keel of the twelfth segment from 



above. 

 Fiff. 3 a. Ditto. Anal segment from above. 

 Fit/. 3 b. Ditto. Copulatory foot from below. 

 Fiff. 4. lulii^solitarius, sp. n. Anal segment from the side. 

 Fiff. o. lii/us trit>fa>ti, sp. n. Anal segment from the side. 

 Fiff. 5 a. Ditto. Part of segment to show po.-ition of pore. 

 Fif/. 6. Spiro^trcptus Mospleyi, sp. n. Lateral view of head and colium, X . 

 Fiij. (i a. Ditto. Lateral view of anal si'gment. 

 Fiy. 7. Acanthiithis Murrayi, sp. n. Lateral view of anterior end of 



body, X. 

 Fiy. 7 (t. Ditto. Lateral view of two of the middle segments. 

 Fiy. 7 b. Ditto. Latei-al view of posterior end of body. 

 Fiy. 8. Spirobolui (hrsalis (Le Guillou). Lateral view of head, X. 

 Fiy. t). Spirobolus diyraininus, sp. n. Lateral view of head and colium, X . 

 Fiy. 9 a. Ditto. Lateral view of anal segment, X. 

 Fig. 9 b. Ditto. Anterior view of copulatory feet. 



Fig. 10. Spirobolus challenyeri, sp. n. J>ateral view of head and colium, X . 

 Fiy. 10 a. Ditto. I.Ateral view of antd .<omite, X. 

 Fiy.Mih. Ditto. Third leg of male. 

 Fiy. 10 c. Ditto. Anterior view of copulatory feet. 



Fiy. 11. Spirobolusjiait)-(o/laris,s^. n. Lateral view of anal segment, X . 

 /'///. 11 rt. Ditto. Anterior view of copulatory feet. 

 Fiy. 12. Spirobolus hamorrhantus, sp. n. Iviteral view of head and 



colium, X . 

 Fiy. 12 rt. Ditto. Lateral view of anal segment, X . 



X\ IT. — lite Injluence of Li(jht on the Coloration of 

 Crustaceans. By A.-E. Malard*. 



M. Martin has yecently drawn the attention of our Society 

 to a peculiar case bf albinisin which he liad studied in a lobster 



* Translated from ihe ' Hullitin de la Society Philomathique de Paris,' 

 Sieme .s^ipie, t. i\. no. 1 (Pari.-, iKiJ), pp. 24-30. 



