CBWTACEA. 257 



■without locality, and being also of very small size, I was uncer- 

 tain whether to regard them as belonging at all to this genus, and 

 if so, whether they might not represent an immature condition of 

 one of the known species. This, I am inclined to think, cannot be 

 possible, since there are one or two Matuto in the collection no 

 larger than M. inermis, in which nevertheless the lateral spines are 

 distinctly developed and the carapace of the normal width. In 

 the obsolescence of the lateral spines M. im rmis resembles the genus 

 I'niptosoma ; but in the form of the chelipedes and of the dactyli of 

 the swimming-legs and in the mouth-organs it is altogether a Matuta. 



113. Calappa hepatica (Linn.). 



An adult male was obtained near Clairmont on a coral-reef 

 (No. 151). 



Specimens are in the British-Museum collection from the following 

 Australian localities : — Trinity Day, N.E. Australia (J. Macgillivray, 

 H.M.S. 'Rattlesnake'), also from Bramble Key and West Hill (J. 

 B. Jakes). Hess records it from Sydney. 



I have already * referred to the extended geographical range of 

 this common species, which is more generally known by Fabricius's 

 designation C. tuberculata. 



*&- 



114. Dorippe dorsipes. 



Cancer dorsipes. Linn. Mus. Lud. Ulrica;, p. 452 (1764); Syst. Nat. 

 ed. xii. p. 10-53 ( 1706), not of Rumpliius, Fahriciu ■. or Herbst. 



Cancer frascone, Herbst, Naturg. Krabben etc. i. p. 102, pi. xi. fig. 70 

 (1790). 



? Cancer quadridens, Fabrieius, Ent. Syst. ii. p. 404 (1793). 



Dorippe quadridens, Fabr. Ent. Syst. Svppl. p. 301 ( 1798) ; De Haan, 

 Faun. Japon., Crust, p. 121, pi. xxxi. fig. 3 (1841) ; White, List 

 Cr. Frit. Mus. p. 54 (1-47) ; Stimpson, Fr. Ac. Nat. Sci. Phil. 

 p. 103 (1858). 



Dorippe atropos and D. nodulosa, Lamarck, Syst. Anim. sans Vert. 

 v. p. 245 (1818). 



Dorippe quadridentatn, M.-Ediv. Hist, Nat. Crust, ii. p. 157 (T- 

 MilgendorfjMonatsh, AJtad. Wissensch. Berlin, p. 812 (1878); Has- 

 ted, Cat. Austr. Crust, p. 137 (1882). 



To this species are referred a male from Port Molle, 14 fms. (Xo. 

 93); another from Port Denison, 4 fms. : a female from Flinders, 

 Clairmont, X.E. Australia, 11 fms. : and a small male in ven im- 

 perfect condition from Thursday Island, 4—6 fms. (Xo. 130), in 

 which the carapace is narrower than usual. All of the above from the 

 first collection. In the second collection, three small specimens from 

 the Arafura Sea, 32-36 fms. (Xo. 160), probably belong here. 

 Another very small example from Friday Island, 10 fms. (Xo. 153), 

 which has the carapace glabrous, but tuberculated nearly as in D. 

 dorsipes, I cannot assign with certainty to any species. 



* Phil. Trans, clxviii. p. 491 (1879). 



