20 BOVALLIUS. NEAV ISOPODA. 



The uropoda (Pl. IV fig. 40,) do not reach to the hinder 

 margin of the nrus; the rami are nearlv falciform. the inner 

 one shorter and narrower than the onter. 



Colour. Light hrown with minute dark spöts. 



Lengtli. 15 m. m. 



Hab. The Adria. (C. B.). 

 Only one specimen. 



6. Ceratothoa deplauata, n. sp. 



Deriv. The name from the flattened dorsal side of the animal. 



Diagn. Covpus elongatum, dorso deplanato, ter longius quam latins. 



Capiit latum, triangulare, leviter immersum, duplo fere latius 

 quam longius, fronte rotundata. 



Oculi parvi jhomboidales. 

 4> Antennoe pi'imi paris ils secundi paris fere ^quales, crassae, sep- 



tem-articulat^, marginem anteriorem segmenti primi pereii superantes. 



Processus segmenti primi pcreil dimidio capitis breviores, Seg- 

 mentum quartum aliis longius. 



Epxmcra media maxima, epimera secundi et septimi paris latera 

 segmenti explentia. 



Femora pedum 2Jcreu parium trium ultimorum latissima. 



Pleon immersum, angulis posticis segmenti primi liberis. Seg- 

 mentum primum angustius dimidio segmenti quinti. Pleon uro latius. 



TJvHS quam jjleon longior, late rotundatus, multo latior quam 

 longior. 



Pedes 7iri marginem posteriorem uri superantes. 



The body is elongate, the dorsalside depressed and flattened. 



The Jiead is broad, triangulär, immersed, nearly twice as 

 broad as long (11: 6); the tip of the front is rounded. 



The e>jes are small, rhomboidal. 



The first pair of antennce are nearly as long as the second, 

 thick, seven-jointed; thev reach qnite to the anterior margin of 

 the first pereional segment. 



The processes of the first segment of the pereion are 

 shorter than half the head. The fourth segment is the longest. 



The epimerals of the foiirth and fifth segments are the 

 longest; only the epimerals of the second and seventh segments 

 occupy the whole length of the sides of the segments. 



The femora of the three last pairs of pereiopoda are very 

 large. 



