LERNENTOMA. 329 



ing the abdomen, which is nearly quite rudimentary. Two 

 pairs only of thoracic appendages are visible, occurring 

 at the upper portion of the narrow part, each divided into 

 two digitations, and situated at a short distance from each 

 other. The oviferous sacs are of considerable size, cylin- 

 drical, and about two thirds the length of the body. 

 Length nearly three lines. 



Male. Somewhat pyriform in shape. Head very large, 

 swollen. Thorax conical, divided into five segments, and 

 terminated by a rudimentary abdomen, armed with two 

 small hooks. Antennae slender, setaceous, projecting 

 from the anterior extremity of the head, and underneath 

 them a pair of hook-shaped foot -jaws. Mouth situated 

 far back, and provided with mandibles ; and behind the 

 mouth two other pairs of foot-jaws are visible. Following 

 these we observe two pairs of setiferous tubercles repre- 

 senting the feet. Length, a quarter of a line. 



Hab. Female. On the branchiae of a sole, May 2d, 

 1837; Ireland, W. Thompson, Esq. 



2. LERNENTOMA ASELLINA. Tab. XXXV, fig. 4. 



LERN^A ASELLINA, Linnaeus, Faun. Suec., 2101, 1761 ; Syst. Nat., 



edit. 12th, i, 1093, No. 4. 



LERNENTOMA ASELLINA, Blaincille, Journ. Phys., xcv, 411. 

 LERNENTOMA TRIGLA, Blainmlle* 1. c., xcv, 441, t. 26, f. 12 ; Diet. 



Sc. Nat., xxvi, 125. 

 Desmarest, Ccms. gen. Crust., 349. 



CJIONDRACANTHUS TRIGL.E, Nori1i,n(,t,>, Mik. Beitr., ii, 116, t. 9, f. 1-4. 



Burmeister, Nov. Act. Nat. Cur., xvii. 

 Guerht, Icouog. Regne An. Zooph., t. 9,f. 8 . 

 Kroyer, Tidsskrift, ii, 135, t. 3, f, 3. 

 M. Edwards, Hist. Nat. Crust., iii, 502. 

 LERN^A CAUDA DUPLICI TERETI, Linnaeus, Wastogota Resa, 171, t. 3 3 



f. 4 a, b, 1747. 

 LERN.EA, Cuvier, Regne An., iii, t. 15, f. 4. 



Character. Female. Body somewhat square -shaped. 



* Not Lerneomyzoti t riff la, as Kroyer erroneously quotes it (Tidsskrift, ii). 



