COPEPODA. 281 



The large size and the jointing of the slender anterior antennae sufficiently distinguish 

 this species. 



Lichomolgus dentipes, n. sp. — Plate XVI., figs. 27 to 30. 

 Length, female 0"86 millim. ; male unknown. 

 ■ Cephalothorax broadly ovate, the cephalic segment equal in size to the combined 

 5 following ; the edges of the 3rd and 4th segments are finely serrated. The 

 5th segment is very small, with sharply-pointed lateral terminations. 



Abdomen very short and stout, hardly -g-th the length of cephalothorax ; genital 

 segment as long as the combined 2 following and double the width ; 4th joint the 

 same as 1st. Furcal rami equal in length and breadth. 



Anterior antennae 7-iointed, the proportional lengths being: — '- : — '- — '- — '- — '- — '- 



J > v v t, to 11. 26. 3. 7. 4. 3. 2. 



Mouth organs as in Paralichomolgus. Inner branch of 4th natatory legs 2-jointed, 

 both joints straight and very narrow. The 5th pair have each a large tooth projecting 

 from inner side anteriorly. 



Of this very striking species one specimen only, a female, was found in the general 



washings of dredged Invertebrata. It is easily recognisable by its serrated thoracic 



edges and by the 4th and 5th natatory legs — the tooth on the latter gives the specific 



name. 



Paralichomolgus, n. gen. 



Female ; body composed of 10 segments ; cephalothorax rotund or ovate ; 5 -jointed ; 

 genital segment much larger than the others, being the 1st and 2nd segments united. 



Anterior antennae 8-jointed. Posterior antennae, mouth organs, and natatory legs 

 as in Licliomolgu*. The difference between this genus and Lichomolgus consists in 

 the lateral prolongations of the body segments and in the jointing of the anterior 

 antennae. 



Paralichomolgus curticaudatus, n. sp. — Plate XVI., figs. 1 to 7. 



Length, female 1*2 millims. ; male unknown. 



Cephalothorax ovate, 5-jointed ; the posterior edges of segments 2 to 4 being pointed. 



Abdomen very short, about -g-th the length of the cephalothorax ; genital segment 



wider than its length and having on each side posteriorly a rounded lobe ; the other 



joints very small. Furcal rami very small, almost half spheres. Anterior antennae 



. , , . , . „„ 1. 2. 3. 4. 5. 6. 7. 8. 



8-jomted, the proportional lengths being as follows : - ■ _ o - 



12. 35. o. 8. lo. o. 4. o. 



Posterior antennae 3-jointed ; the 1st and 2nd joints sub-equal ; the 3rd as long as 



the combined 1st and 2nd ; terminal claw thick, and obtuse at apex. Mandible and 



palp as in Lichomolgus buddliensis. Maxillhpeds similar to Lichomolgus ieversi, 



except that the joints of the 2nd are nearly double the width of the latter. Natatory 



legs also similar to those of latter species ; the 2 joints of inner branch of the 4th pair, 



however, being equal in length to the 3-jointed outer branch. 



2 o 



