i6i 



of the rostrum, which is slightly turned downward, shows a trace of a median carina, especially 

 when looked at obliquely, and this carina is traceable, in one specimen, as far as the gastric 

 region. Corneae small, at some distance from the frontal margin. Pterygostomian angle rounded. 



Antennular peduncle stout, second article hardly longer than thick, twice as long as the 

 visible part of the first article, third slightly longer than second. Stylocerite acuminate, a little 

 shorter than the rostrum, reaching not yet to the ape.x of median article. The basal, undivided 

 part of the outer flagellum consists of three articles which are broader than long, the third bearing 

 the two flagella ; the short flagellum is one and a half as long as the basal, undivided part. 



Basicerite with a subacute tooth on the lower side, that reaches almost as far forward 

 as the basal antennular article. Carpocerite of a stout shape, reaching to the middle of third 

 antennular article and just as long as the rather broad scale of the scaphocerite ; flagellum 

 robust, shorter than the body. 



Posterior angle of the pleura of the third, fourth and fifth abdominal somite rather 

 obtuse, pleura of the sixth immovable. 



Telson 1,7-times as long as the sixth somite, resembling that of Jous. Sibogae^ the 

 length being equal to 4,8-times the width of the posterior margin; proportion between the 

 width of the latter and the width at the base 2,5. Posterior margin with the outer angles obtuse 

 and with a trapeziform notch in the middle, which posteriorly appears a little less broad than 

 the lateral parts of the margin ; the anterior margin of the notch is entire and bears two 

 feathered setae that are as long as the longer inner spinules of the posterior margin. Like in 

 Jous. Sibogae, one observes at either side of the notch only two spinules, the inner lon^^er 

 one as long as the posterior margin is broad, while the outer is but a little shorter. Spinules 

 of the upper surface small, implanted not far from the lateral margins, the anterior pair near 

 the posterior third, the length of the telson being in proportion to the distance of this pair 

 from the posterior margin as 2,8 ; i ; posterior pair midway between the anterior pair and the 

 posterior margin. In the other specimen which is a little smaller, the proportion between the 

 length of the telson and the width of the posterior margin is 4,4 ; the anterior pair of spinules 

 is situated a little more forward and the posterior a little farther distant from the anterior pair 

 than from the posterior margin ; in this specimen the longer spinules of the posterior margin 

 are even a little longer than the latter is wide. 



In both specimens the larg^e cheliped is missing, the small cheliped resembles that which 

 is observed in the genus Athanas. The ischium, twice as long as broad, carries some setae 

 near its posterior margin. Merus twice as long as the preceding joint, slightly bent and 

 4-times as long as wide ; its lower face appears a little concave. The carpus measures three- 

 fourths of the merus and appears 3, 4-times as long as thick at its distal extremity. The chela 

 measures four-fifths of the merus and is but a little longer than the carpus ; the palm appears 

 slightly broader or higher, in the plane of the fingers, than thick, the proportion being as 

 4 : 3 and the length of the chela is in proportion to the width or the height as 2,4 : i. Fingers 

 shorter than the palm, the proportion being as i : 1,35; they do not quite shut together, are 

 of equal height and are armed each with 3 or 4 small, conical teeth that increase in size from 

 the proximal to the distal. 



29 



