599 



smaller, thougli also sharp tooth and adjacent to it a low blunt 

 tubercle. 



Abdominal terga rounded above. Outer edge of the inner plate 

 of the caudal swimmerets serrate, midrib carrying four or five 

 spines along its whole length ; outer rib of the two on the upper 

 surface of the exopodite covered with niue or ten very small 

 spinules, arranged irregularly. 



Eyes with well-developped facets and with darkbrown pigment. 



Stylocerite reaching not yet to the middle of the penultimate 

 joint of the antennular peduncle. Flagellum of the exopodite of 

 the external maxillipedes much thinner, the joints in the middle 

 of the flagellum, as also the following, longer than broad. 



Lower border of the merus of the Ist pair of legs serrate, pre- 

 senting 8 or 9 teeth (no spines) along its whole length ; upper 

 border unarmed. Fingers not gradually tapering into very slender, 

 pointed tips, as in Cal. feliv, but of the more usual shape and 

 somewhat compressed ; those of the larger, left hand just as long 

 as the palm, those of the other little longer. 



Calastacus longispinis Mc.Ardle has five teeth on either side 

 of the rostrum, the eyestalks are more than half as long as the 

 rostrum, the eyes are rudimentary and the stylocerite is longer. 



One male. Length 21 m.m. 



14. Upogebia (Gebiopsis) ancylodactyla n. sp. 



Stat. 60. Haingsisi, Samau-Island, near Timor. öhore. 



Closely related to Upogebia (Gebiopsis) Darwinii Miers, but 

 distinguished by the following. Size much smaller, eggs few in 

 number, large, diameter 0,9 m.m. broad (the eggs of Upog. Dar- 

 winii are very numerous, but smaller, 0,6 — 0,7 m.m. broad). Front 

 obtuse, its length being '/<j of that of the carapace, as long as 

 broad, and armed with 4 spinules, two on either side ; gastric 

 region denticulate and pubescent, as in the other species. No spine 

 on the anterior margin of the carapace. ïelson subquadrate, little 

 broader than long. 



