FKOM THE INLAND SEA OF JAPAN. 439 



also be identical with. Tenceus curvirostris is, no doubt, erroneous. The carapace of 

 Ten. harhatus is rounded and devoid of a postrostral ridge; the anterior margin carries a 

 spine below the basal joint of the outer antennae, which does not occur in Ten. 

 curvirostris ; and in Fen. barhatus there is a faint ridge posterior to the hepatic spine, 

 no trace of which exists in Fen. curvirostris. 



The external maxillipeds of de Haan's species reach to the tip of the antennal scales 

 and the third legs are also imispinose. 



Pen. monoceros of de Haan=Pe«. ensis, de Haan, appears, on the contrary, most closely 

 related to Fen. curvirostris. The rostrum reaches, however, to the end of the antennal 

 scales, and from the hepatic spine a ridge goes backward to the posterior margin of the 

 carapace. The outer flagellum of the internal antennge is not longer than the eye- 

 peduncles. The third legs are also unispinose at base ; and the second somite of the 

 abdomen seems to be devoid of a rudimentary crest on the upper border. 



Fen. monoceros, Fabr., is also a different species {vide de Man, in Max Weber's 

 Zool. Ergebnisse, 1892, t. ii. p. 513, pi. 29. fig. 54). 



Geographical Distribtition. — Simoda (Stimpson): Yokohama (' Challenger'): Arafura 

 Sea {Spence Fate) : Kochi, Bays of Tokyo and Sagami (Ortmann) : Hakodate, Hokkaido ; 

 Aomori, Eikuoku ; Hizen, Nagasaki {Bathbun) : Pacific Coast of Japan from the Bay of 

 Awomori to Kagoshima {Kishinoui/e). 



Stomatopoda. 



CHLOBIDELLA, Miers *. 

 Chloridella affinis (Berthold). 



Squilla affinis, Berthold, ' Reptilien aus Neu-Grenada und Crustaceen aus China,' Gottingen, 1846, p. 26, 



tab. 3. figs. 1, 2; Bigelow, in Proc. U.S. Nat. Museum, xvii. 1894', p. 538 (ubi syuon.). 

 Chloridella affinis, Rathbun, in Proc. U.S. Nat. Museum, xxvi. 1902, p. 55. 



One specimen from the Inland Sea of Japan. 



In this specimen, which is 45 mm. long from the tip of the rostrum to the end of the 

 telson, the oblique corneal axis of the eyes is 3'2 mm. long, /. e. 0'07 of the length of 

 the body ; according to Bigelow it is comparatively a little shorter in adult individuals, 

 measuring here only 0*05 ot the length of the body. 



The antero-lateral spines of the carapace reach just beyond the suture between the 

 latter and the rostrum, whereas in adult specimens they are shorter than it. The median 

 carina of the carapace is bifurcated for ^ of its length. The rostrum carries on its 

 anterior half a feeble median ridge. The telson carries betw^een the marginal spines, on 

 each side of the middle line, one lateral, nine intermediate, and four sub median denticles. 

 The submedian spines of the telson are probably provided with movable tips, which in 

 that case should be a juvenile character. 



* This species and the following are provisionally placed in the genus Chloridella, Miers, but it appears to 

 me probable that it will prove necessary to create a new name for the genus including those species that were 

 referred by Bigelow to StjuiUa, J. C. Fabr. 



