66 Memoirs of the Indian Museum. : [ Vor. TV; 
24. Squilla oratoria, de Haan. 
Plate V, figs. 54-56. 
1844 ?! Squilla oratoria, De Haan, in Siebold’s Fauna Japonica, Crust., atlas, pl. li, fig. 2. 
1845. Squilla affinis, Berthold, Abhandl. Gess. Wiss. Gottingen, III, p. 26, pl. iti, figs. r—2. 
1849. Squilla oratoria, De Haan, in Siebold’s Fauna Japonica, Crust., p. 223. 
1880. Squilla nepa, Miers, Ann. Mag. Nat. Hist. (5), V, p, 25 (partim). 
1886. Squilla nepa, Brooks, Voy. H.MS. ‘ Challenger,’ XVI, Stomatop., p. 25. 
1893. Squilla affinis, Pocock, Ann. Mag. Nat. Hist. (6), XI, p. 444 (parlim). 
1893. Squilla affints, Bigelow, John Hopkins Univ. Cric., No. 106, p. ro2. 
1894. Squilla affinis, Bigelow, Proc. U. S. Nat. Mus., XVII, p. 538, fig. 22. 
1907. Chloridella affinis, de Man, Trans. Linn. Soc. Zool. (2), IX, p. 439. 
1908. Squilla oratoria, Stebbing, Ann. S. African Mus., VI, pp. 44, 45. 
Squilla mauritiana, Wood-Mason, MS. 
1908. Sguilla ovatoria, Ioyd, Rec. Ind. Mus , II, p. 33. 
The identity of the specimens recorded in the following papers is uncertain ; some 
very probably belong to one or other of the new forms described below :— 
1865. Squilla oratoria, Heller, Reise ‘ Novara’ Exped., Crust., p. 124. 
1898. Sguilla affinis, de Man, Zool. Jahrb., Syst. X, p. 693. 
1899. Squilla affinis, Nobili, Ann. Mus. Civ Genova, (2), XX, p. 275. 
1900. Squilla affinis, Nobili, Ann. Mus. Civ. Genova, (2), XX, p. 519. 
1g0r. Squilla affints, Nobili, Boll. Mus. Torino, XVI, No. 397, p. 14. 
1902. Squilla affinis, de Man, Abhandl. Senck. Ges. Frankfurt, XXV, p. 911. 
1903. Chloridella affinis, Rathbun, Proc. U. S. Nat. Mus., XXVI, p. 55. 
1903. Squilla affints, Nobili, Boll. Mus. Torino, XVIII, No. 455, p. 38. 
Squilla oratoria along with its variety perpensa and the allied species interrupta, 
wood-masont, stridulans and massavensis form a very compact group ; all may be sepa- 
rated at a glance from S. foveolata, nepa and holoschista by the large eyes, the cornea of 
which is set very obliquely on the stalk. 
The special characters by which S. oratoria is distinguished from the other closely 
allied forms are :— 
1. The dorsal surface of the carapace and abdomen is strongly punctate and 
never presents a polished appearance. 
2. The median carina of the carapace is sharp and distinct throughout its course 
and is bifurcated in front for only about one quarter its length anterior to 
the cervical groove (fig. 54). 
3. The breadth of the carapace measured behind the antero-lateral angles is less 
than half its length, including the rostrum. 
4. The rostrum is subquadrate and its lateral margins, which are not infrequently 
upturned, are slightly convergent anteriorly. 
' T arm not certain of the exact date when the atlas to the Fauna Japonica was published (in the 
copy consulted the plales are bound up with the text and are undated), but I have accepted Stebhing’s 
statement (1908) that, as De Haan himself contended in 1849, it antedates Berthold’s paper. 
