6 



BOVALLIUS, SOME AMPHIPODOUS GENERA. 



Thorax oval, convex above and 

 beneath, seven-jointed, sutures im- 

 bricate. 



Feet fourteen, simple, two an- 

 terior pairs compressed, terminal 

 joints conic compressed. 



Remaining pairs somewbat cy- 

 lindric, armed with a minute sub- 

 terminal nail. 



Pereion, seen from above, oval, 

 convex above and beneath, seven- 

 jointed, sutures often imbricate. 



Pereiopoda seven pairs, none 

 cheliform. The two first pairs com- 

 pressed, dactyli broad conic com- 

 pressed. 



Third to seventh pairs more or 

 less cylindric, each leg armed with 

 a strong, often denticulated, retrac- 

 tile claw, concealed in a deep cavity 

 at the end of the metacarpus ; when 

 stretched out it looks like a »subter- 

 miuab claw. (Fig. 1, a and 1, b). 



Sixth pair the longest (except 

 in L. Clausii. n. sp.). 



Branchial vesicles oblong, di- 

 stinct, placed at the inner base of 

 the feet, except the first and the 

 seventh pairs. 



Pleon abruptly narrower than 

 the pereiron. 



Urus depressed two-jointed, the 

 second and third joints being fused 

 together; with three pairs of uropoda, 

 each consisting of a linear peduncle, 

 supporting two acute, lanceolate, 

 subequal rami. 



Telson attenuate between the 

 last pair of uropoda. 



On account of the evident coincidence of the both descrip- 

 tions related above, I claim the name Lanceola, Sat, as the 

 right and true generic name for the animal, that is the type 

 of my description, and I beg to add here preliminary dia- 

 gnoses of some new species of this genus. More^ detailed 

 descriptions, accompanied with figures, will be very soon pub- 

 lished in the above -named monographical work on Amphi- 

 poda Hyperidea. 



Sixth pair the longest. 



Vesicular branchise oblong, di- 

 stinct, placed at the inner base of 

 the feet, except the first and the 

 seventh pairs. 



Abdomen abruptly much nar- 

 rower than the thorax. 



Tail depressed three -jointed; 

 joints furnished each with a lateral 

 style, which consists of a foliaceous, 

 linear peduncle supporting two acute, 

 lanceolate, subequal laminse. 



Terminal segment attenuate be- 

 tween the posterior styles. 



1. Lanceola Lovéni, n. sp. 



The sixth pair of pereiopoda are much longer than the 

 others, except the fifth pair, which are only a little shorter than 

 the sixth. The pleon and urus together are longer than half 

 the pereion with the head. The upper antennae do not reach to 



