632 RET. T. R. E. STEBBING ON CRUSTACEANS (TMay 22, 



White's Petalocerus being a synonym of Phylloliihodes. To these 

 Bouvier in 1896 adds Paralithodes Brandt, and NeoUtJiodes M.- 

 Edwards and Bouvier, as constituting together the other division 

 of the Lithodinea, Brandt's Ostracogastrica. De Haan's Lithodes 

 histriv, referred by Ortniann to Paredomis, is by Bouvier, in agree- 

 ment with Stimpson, made the type of Acantholithus. The Lepto- 

 lithodes and Pristopus of Benedict, 1894, are regarded as synonyms 

 of White's Paralomis, to which eight species are assigned — aculeata 

 and formosa of Henderson, lonr/ipes and aspera of Faxon, multi- 

 spina and p)apillata from Benedict's Leptolifhodes, verrilli from his 

 Pnstojytis, and Dana's verrucosa, of which Jacquinot's granidosa is 

 accepted as a synonym. 



As characters common to all the Ostracogastrica, Bouvier gives 

 " Lateral pieces of the pleon absolutely entire. Acicle spinulose 

 or spin ose, rarely laminar, simple, sometimes rudimentarv." l*ar(t- 

 lomis he describes as agreeing with AcantholitJms and PhinoHfJiodes 

 in having "The habitus of Lithodes. — Carapace longitudinally oval, 

 cordiform or triangular, very rarely a little broader than long, and 

 not extending roof-like over base of walking-legs. Antepenul- 

 timate joint of first feet is very rarely provided with a salient 

 internal crest, has no respiratory channel, and does not serve 

 specially to protect the oral appendages. Median pieces of the 

 pleon separated by a row of nodules more or less coalesced." 



Paralomis, in common Mith Phinoliihodes, has the "acicle rather 

 triangular, and ornamented with some spines, especially on its 

 outer margin." From liJdnoUthodes and AcaniJioIitJius, it is distin- 

 guished by the following characters : — " The marginal pieces of the 

 third pleon- segment are fused with the corresponding lateral piece. 

 Rostrum devoid of dorsal projection, but sometimes furnished 

 below with a spinule or a tubercle." 



Paralomis granulosa (Jacquinot). 



1843-1847^. Lithodes cp'anvlosa, Jacquinot, Voy. an Pole Sud, 

 Atlas, Crustaces, pi. 8. figs. 15-21. 



1852. Lithodes verrucosa, Dana, U.S. Expl. Exp. vol. xiii., Crust, 

 pt. i. p. 428, pi. 26. fig. 16. 



1853. Lithodes grayndata, Lucas, Voy. an Pole Sud, Zoologie, 

 vol. iii. Crustaces, p. 94. 



1856. Paralomis granidosa, White, Pr. Zool. Soc. Lond. vol. xxiv. 

 p. 134. 



1858. Paralomis gramdosus, Stimpson, Pr. Ac. Philad. p. 231 

 (Prodromus, p. 69). 



1858. Paralomis verrucosus, Stimpson, loc. cit. 



1871. Lithodes verrucosa C^ L. granulosa), Cunningham, Tr. Linn. 

 Soc. Lond. vol. xxvii. p. 494. 



1881. Paralomis verrucosus, Miers, Pr. Zool. Soc. Lond. p. 71. 



1881. Paralomis gramdostts, Miers, loc. cit. p. 72. 



^ See footnote on Peltarion, p. 519. 

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