OCR Text |
Show 524 BEV. T. R. R. STEBBING Ofr CRUSTACEANS [May 22, superior margin, and receives the eyes and the antenna? without intermediate division in front of the epistome, although that is present. This (Halicarcinus ovatus, see p. 173) belongs in our opinion to the genus Halicarcinus." The emphasis which Tozzetti lays ou the presence of the epistome is in criticism of Milne-Edwards, who had distinguished Hymenosoma aud Halicarcinus, with the epistome less prominent, from Elamena and Trigonoplax, with the epistome more prominent. After prolonged attention to Tozzetti's discussion, I cannot help feeling that he has made out but a feeble case for the generic distinction of his second and third forms, nor can I feel quite certain that his Halicarcinus ovatus is the same as that which I suppose to be Stimpson's. On this and many other points of Australian carcinology, precise and detailed investigations are needed. HALICARCINUS PLANATUS (Fabricius). (Plate XXXVI B.) 1775. Cancer planatus, Fabricius, Syst. Ent. p. 403, 18. 1781. Cancer planatus, Fabricius, Spec. Ins. vol. i. p. 499 19 1783. Cancer planatus, Herbst, Krabben undKrebse, Heft. 2^5 p. 142. ' 1793. Cancer planatus, Fabricius, Ent. Syst. vol. ii. p. 446 1/98. Leucosia planata, Fabricius, Suppl'. Ent. Syst. p. 350. 1846. Halicarcinus planatus, White, Ann. Mas Nat Hist ser. 1, vol. xviii. p. 178, pi. 2. fig. 1. B ' 1852. Halicarcinus planatus, Dana, U.S. Expl. Exn vol xiii Crust, p. 385, pi. 24. figs. 7 a b. F P' ' 1853. Halicarcinus planatus, Milne-Edwards, Ann. Sci Nat ser. 6, vol. xx. p. 222. 1868. Halicarcinus planatus, Heller, Eeise der Novara, Crust. 1871. Halicarcinus planatus, Cunningham, Tr. Linn. Soc. Lond vol. xxvii. p. 492. 1876. Halicarcinus planatus, Miers, Catal. N e w Zealand Crust. TT 1?7J Halicarcinus planatus, S. I. Smith, Bull. U.S Mus Nat Hist, llerguelen, p. 57. ' '' 1877 Halicarcinus planatus, Targioni-Tozzetti, Crost della V%8a*S-7 ?6' .pl 10' figS' 4 ** PL 1 L ' %8' 2> 2 a [?1 18,9. Halicarcinus planatus, Miers, Phil. Trans, vol. 168. p. J/Vl. stracafp. ^mosomaPlanatum^ HaBwell, Catal. Australian Malaco- At p. 173 under Halicarcinus ovatus we read " Tmr v XXc K „ J m Fig 3, fa »; on p. 178, under Halicarcinus plZatu^ **££* *»• x,. p. 255 the explanation of Tav. x. assigns H vlanatn* tn «„ i SA *r '* °u fig. 5 ; but Tav. xi. has " Fig 1 la fa'' fclrHnf? \ 4' ^ d H' 0Vatus to of the preceding plate, - J g 1, 2 *S?M^&£?5£* Yeference Y> % * the preceding plate, and » Fig. 3, 3« 3ft 3*3 J C e * r*[erenc* to %• * ©f 6 r 6 ' °a>O0>°c,6d,de for Hymenosoma lave. |