2 12 



6. Lateral margins of carapace entire. Eyes pigmented, well developed. T. ocular ia Rathbun i) 

 Lateral margins of carapace with two teeth, granulate. Eyes very 



faintly pigmented T. angustifrons'^^\\^h\xn-). 



I. Typlilocarcinops transversa n. sp. PI. 13, Fig. 5. 



Stat. 47. Bay of Bima, north coast of Sumbawa. Depth 13—31 m. i cf. i 9- 



This species is broader than any other known species of the genus, the breadth of the 

 carapace measuring nearly i7„ times its length. The surface of the carapace is somewhat 

 pubescent, more so the 9 than in the cf, and densely fringed with long, club-shaped hairs 

 aloncr the margins, especially the antero-lateral ones; on the other hand are front and eye-stalks 

 nearly destitute of hairs. The front is longitudinally grooved, which groove bifurcates distally; 

 for the re.st there is scarcely any trace of regions on the longitudinally-vaulted carapace. 



The free edge of the front is on the whole straight, slightly wavy in anterior view, and 

 longer than either orbit. This small orbit is, as usual, completely filled by the firmly-fi.xed 

 eye-stalk, which is of a semi-circular shape and provided with a faint speck of pigment near 

 the distal end; this pigment is stronger in the 9 specimen. As is of general occurrence in the 

 Rhisopinae, the orbits and eje-stalks do not form an interruption in the general outline of the 

 carapace; the antero-lateral margins are directed nearly straightly outward near the orbits, then 

 curve back, and form three blunt teeth, only visible, however, after removal of the row 

 of hairs and the pube.scence covering them. These teeth are separated by very wide interspaces; 

 the median one, which is of the same build as the first, is situated nearer to the third than 

 to the first: the third tooth is the smallest, crest-like, longitudinal, and marks the transition to 

 the postero-lateral margins of the carapace, that are somewhat converging backward; it 

 is near these margins that the carapace is roughly granulate. The posterior margin is conve.x, 

 thickened. 



Antennulae and antennae are shaped quite like those of Typhlocarcinus. The epistome 

 is distinct, vertical, its free edge not crenulate or wavy; the septum between the endostome 

 ridges is very distinct. Lateral margins of buccal cavity parallel. Merus and ischium of external 

 maxillipeds (fig. 3 a) pubescent and granulate, as is also the exognath; external maxillipeds 

 completely closing the buccal cavity; merus subquadrate, as broad as, but shorter than, ischium, 

 antero-e.xternal angle somewhat produced; exognath about one-third the width of ischium. 



Chelipeds strong, longer than the first pair of walking legs in the cf. Meropodite with 

 upper border unarmed, but granulate and hairy, like inner border, under surface with numerous 

 granules. Wrist short, granulate and hairy near the rounded inner margin. Chelae equal, but 

 larger in cf than in 9, sharply keeled above; in the 9 both surfaces of palm are entirely 

 covered with a short pubescence, intermingled with longer hairs at outer surface, and, together 

 with this pubescence, the palm is everywhere granulate; in the cf the same occurs, but a 

 patch in the middle of the outer surface is devoid of pubescence and entirely smooth; the 



1) Proc. U.S. Nat. Mus., v. 48, 1914, p. 153. Hab. Philippines, 50 fathoms. 



2) Proc. L". S. Nat. Mus., v. 48, 1914, p. 153. Hab. Philippines, 135 fathoms. 



64 



