132 POST-TERTIARY ENTOMOSTRACA. 



and finely pectinate on the inner margin. Post-abdominal rami moderately robust, 

 bearing two curved terminal claws, one' seta on the anterior and two on the posterior 

 margin. Testes disposed round the body of the animal ; mucous gland of the male 

 elongated and composed of seven series of verticillate filaments. 



Aglaia (?) GLACiAiiis, nov. sp. Plate XI, figs. 54 — 56. 



Carapace elongate, reniform, rather lower in front than behind, height scarcely 

 equalling half the length. Extremities rounded, superior margin gently arched, inferior 

 sinuated in the middle. Seen from above, ovate, pointed in front and rounded behind, 

 greatest width somewhat less than the height, and situated near the middle. Surface 

 perfectly smooth. 



Length, yjth of an inch. 



This species was found in Bridhngton, Urip Bridge. 



Genus 6 — Argillcecia, G. 0. Sars. 



Valves smooth, elongated, moderately robust, scarcely higher in front than behind. 

 Superior antennae very robust, five-jointed, first joint very large and stout, the rest beset 

 on the lower margins with strong spines, and on the upper margins, especially in the 

 male, with long setee ; inferior antennae short and thick, otherwise like Pontocypris ; 

 the setae of the antepenultimate joint in the female short, in the male very long and 

 reaching much beyond the terminal claws. Mandibles almost as in Pontocypris, the palp, 

 however, having only a single seta in place of a branchial appendage. Palp of the second 

 pair of jaws indistinctly three-jointed, ending in a single straight claw. Eirst pair of feet 

 strong, terminating in two nearly equal claws, second pair unlike the first and almost 

 like those of Pontocypris, last joint very short and bearing about three spines, of which 

 one is very long and curved. Post-abdominal rami short, attenuated towards the apices, 

 and with very small terminal claws. Eye wanting. 



Argillcecia cylindrica, G. 0. Sars. Plate XVI, figs. 29 — 31. 



1865. AttGiLLfficiA CYLINDRICA, Sars. Oversigt af Norges marine Ostrac, p. 18. 

 1868. ? PoNTOCYPKis ANGUSTA, Brady. Monog. Recent Brit. Ostrac, p. 387, pi. xxxiv, 



figs. 43, 44. 



