334: RECORDS OP THE AUSTRALIAN MUSEUM. 



Zewa varians, Miers. 



Pseudomicippe 1 varians, Miers, Ann. Mag. Nat. Hist., (5), iv., 

 1879, p. 12, pi. iv., tig. 8, also Zool. "Alert," 1884, p. 197, 

 and "Challenger" Rent., Zool., xvii., 1886, p. 68. Id., Ort- 

 mann, Zool. Forsch. Austr., v., 1894, p. 40. Id., Caiman, 

 Trans. Linn. Soc, (2), viii., 1900, p. 39, pi. ii., figs. 25-26. 



Both Miers aud Caiman have expressed doubts as to this 

 species being correctly referred to Pseudomicippe, though their 

 opinion was not shared by Ortmann. I consider that it belongs 

 to the same genus as my Zewa banjieldi, differing from Pseu- 

 domicippe in the general form of the anterior portion of Ihe 

 carapace and particularly in the structure of the orbits. 



I have examined two specimens, the first a female with a 

 carapace, including the rostral horns, 18 mm. long, from Thurs- 

 day Island ; the second is a small male, 10 mm. long, collected 

 at Dunk Island by Mr. E. J. Banfield. The species is also 

 recorded from Port Denison, Queensland ; Torres Strait ; and 

 Shark Bay, Western Australia. Miss Rathbun has kindly re- 

 examined the Port Jackson specimen received from this Museum 

 as P. varians, x 4 and informs me that it is really Micippoides 

 longimanus, Haswell, so that Z. varians is probably contined to 

 the tropics. 



Tumulosternum, yen. nov. 

 (Fig. 45). 



Carapace triangular, with tubercles and short tubercular spines; 

 the regions fairly well delimited. Rostrum formed of two short 

 broad spines, which are a little oblique in the male, and more so 

 in the female. Eyestalks short, each retractile against a stout, 

 angular post-ocular spine, which is somewhat excavated to receive 

 it; no preocular spine, hinder angle of supraocular eave pro- 

 duced outwards. Basal antenna] joint broad, bilobed anteriorly 

 and deeply grooved on the lower surface. External inaxillipeds 

 deeply sculptured, the merus as wide as the ischium, with a broad 

 external lobe ; palp articulated at antero-internal angle. Ptery- 

 gostomian and hepatic regions with large upstanding Hat-topped 

 tnbercules, of which the two largest are on the side of the 

 hepatic regions, and are visible from above. 



J * Rathbun— Proc. U.S. Nat. Mus., xvi., 1693, pp. t)7 ai d 92. 



