LERNENTOMA. 327 



stuck over with cartilaginous spines or tubercles. The ovi- 

 ferous tubes are very short, broad and flattened. 



Chondracanthus Zei, Delaroche. — Body short and 

 thick; upper part of thorax covered with short, conical, 

 sharp-pointed spines. 



Found on the gills of the Zeusfaber. 



Gen. 183. LEENENTOMA, Blainv. 



This genus differs from the last chiefly in the oviferous 

 tubes being long, either club-shaped and stout, or slender 

 and twisting. 



Lernentoma cornuta, Miiller, sp. — Head oval, rather 

 elongated in female ; head in male very large and swollen. 

 The antennae project. In the female there are two pairs of 

 thoracic appendages visible, each divided into two digitations. 

 Length of female, three lines; of male, the quarter of a line. 



Found by the late Mr. Thompson on the branchiae of a 

 sole caught in the Irish Sea. 



Lernentoma asellina, Linn. sp. — Male like that of last 

 species ; the female has a small head placed at the end of a 

 long slender neck ; the thorax is broad, and has two pairs 



