470 G. 0. SARS, 



propodos narrow, sub-linear. The 2 anterior pairs of pereiopoda normal ; the 

 3 posterior pairs moderately elongated, with the basal joint in all of them 

 rather expanded, and produced at the infero-posteal corner, that of last pair 

 much the largest, and having the posterior e.\pausion obtusely truncated 

 below. Last pair of uropoda much elongated, with the outer ramus sub-linear 

 and spinous, inner rudimentary. Telson of moderate size, lateral lobes ob- 

 tusely pointed, and having each a rather strong lateral spine and 3 apical 

 ones. Length of adult female 5 mm. 



Remarks. — This new species, which I have much pleasure in dedica- 

 ting to its discoverer, Mr. Andrussow, is prominently distinguished by the 

 anomalous structure of tlie gnathopoda, which somewhat resembles that 

 found in the genus Iphigenella, to be described below. Moreover, the shape 

 of the basal joint of the 3 posterior pairs of pereiopoda, the armature of 

 the telson, and the considerable length of the last pair of uropoda may 

 serve for easily recognizing the species. 



Description. — The length of the solitary specimen examined, which is 

 an adult, ovigerous female, measures only 5 ram., and this form is accord- 

 ingly of rather small size. 



The body (see fig. 18) is very slender and much compressed, with the 

 back narrowly rounded and quite smooth. 



The cephalon is fully as long as the first 2 segments of the mesosome, 

 and has the lateral lobes ratlier broad, and transversely truncated at the tip. 



The anterior pairs of coxal plates are comparatively larger than in G. 

 jmiixilhis, and, as in that species, quite smooth. The 1st pair are but very 

 slightly expanded distally, though somewhat bi'oadcr than the succeeding 

 one. The 4th pair are rather broad, and have the posterior expansion ob- 

 liquely truncated, forming below the emarginatiou a rather projecting corner. 



The epimeral plates of the metasome are nearly of same shape as in 

 G. pauxillits. 



The urosome (fig. 24), on the other hand, differs markedly in having 

 the first 2 segments armed with both dorsal and lateral fascicles of spines, 

 the dorsal fascicle containing 2 — 4, each of the latei'al ones 3 spinules. The 

 last segment has only a single small spinule on each side, at the base of the 

 telson. 



The eyes are much smaller than in G. pauxiUus, and oval reniform 

 in shape. 



The superior antenn;e are very slender and elongated, exceeding half 

 the length of the body, and have the joints of the peduncle successively 

 diminishing in size (see fig. 1 9). The flagellum is fully twice as long as the 



4'H3. Max. rrp. 3ili). co 



