2 l6 



of external maxillipeds forming together a continuous arcuate line. 

 First abdominal appendages of adult cf projecting a long way 

 beyond terminal segment of abdomen X. dolichophalhis n. sp. 



I. Xenophthalmodes dolichophalliis n. sp. PI. 14, Fig. i. 



Stat. 4. Djangkar, east coast of Java. Depth 9 m. 5 rf (i juv.), i 9 juv. 



Stat. 51. Madura Bay, west coast of Flores. Depth 54 — 90 m. i (ƒ. 



Stat. 205. Lohio Bay, Buton Strait, south of Celebes. Depth 22 mm. i cf juv. 



I am not quite certain about the validity of my species, for Richters' and de Man's 



descriptions of X. moehii disagree in some points, but fortunately I could examine the specimen 



of the latter author in the Leiden Museum. Both the species are very much alike : the greatest 



breadth of the carapace, which is found far behind, only little exceeds its length, the fronto- 



orbital border is less than one-half this greatest breadth, the eye-peduncles are globular, there 



are scarcely any traces of subdivisions on the carapace, the chelae are largely compressed, 



carinate, and the dactyli of the walking legs decrease regularlj- in size from the first to the 



fourth pair. ^) The following points, however, appear to afford specific features : 



i" The carapace is bare in X. ?noedii, only thickly fringed along anterior and lateral margins; 



in the new^ species it is covered with a close pubescence, which, after removal, turns out 



to conceal a fine granulation along the lateral margins. 



2° The front, according to Richters and Alcock, is bilobed in anterior view, in X. moebii\- 



my specimens agree in this respect perfectly with Richters' fig. i on pi. 17, viz. : there 



are two rounded lobes, separated by a rather deep notch. In de Man's specimen, which is 



referred to X. moebii^ the anterior edge of the front is, on the contrary, scarcely notched 



in the middle and regularly convex. 



3" X. moebii is perfectly blind, according to Richters; de Man observed, however, a very 



small, punctiform eye at the end of the eye-stalk, but chiefly ventral; Alcock, again, states 



that the species, of which 13 specimens from different localities could be examined, are devoid 



of eyes, but in one very young specimen the eye is indeed pigmented. In the adult or half- 



grown "Siboga" specimens there is a very faint speek of pigment on the ventral side ot 



the eye-stalk, but in two very young specimens there is a strongly pigmented eye, even 



partly visible in dorsal view, larger and more conspicuous than in de Man's specimen. 



4" In the literature I do not find anything regarding the epistome, except that it resembles that 



of Typhlocarcmus : in the specimen of X. moebii the free edge of the epistome is scarcely 



prominent, thickened. In the new species this edge is markedly prominent, vertical, lamellar, 



with a longitudinal sulcus in the middle. 



5° The external maxillipeds of A'. moebii are slender, the ischium is not broader than the 



merus, the latter quadrangular, with a distinct angle between the anterior and the external 



margin of the merus (see de Man, pi. 3, fig. 5^). In Richters' figure 5 the ischium is 



l) This character has hitherto not been obseived in tlie genus, it occuis also in Typhlocarciinis villosus Stimpson (see p. 210) 

 and in Typhlocarcinops^ decrescens Ratlibun (see p. 214). 



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