64) MR. T. SCOTT OX ENTOMOSTEACA 



Genus Mormonilla, Giesbrecht (1891). 

 Corynuropis, Scott (MS. 1892). 



Resembles Corynura, Brady, in general appearance but differs in the following 

 details : — 



1st. The body becomes gradually narrower posteriorly, so that the thorax and abdomen 

 are not clearly defined the one from the other. 



2nd. The secondary branch of the posterior antennae is multiarticulate. 



3rd. The maxillae are provided with a well-developed bilobed palp. 



4th. The anterior foot-jaws are large and resemble those of Hemicalanus longicornis, 

 Claus. 



5th. The posterior foot-jaws, which are fui'nished with a number of marginal setse, are 

 2-jointed, the apical joint being comparatively short (fig. 17). They resemble neither 

 Acartia nor Corynura. 



6th. The outer branches of the first four pairs of swimming-feet are 2-, and the inner 

 branches 1-jointed, except the first and second pairs, which appear to have the inner 

 branches very indistinctly 2-joiuted. 



7th. In the female the fifth pair of feet is absent or obsolete. Male unknown. 



These differences, especially the 3rd, 5th, and 7th, are too important to allow of the 

 ' Buccaneer ' specimens being ascribed to Corynura, even though the general resem- 

 blance is very striking. 



MoBMONiLLA PHASMA, Giesbrecht. (PI. VII. figs. 11-21.) 



1892. Mormonilla phasma, Giesbrecht, Fauna uiid Flora des Golfes von Neapel (Copepoden), p. 536, 



pi. 43. figs. 28-32, 3-1-41. 

 1892. Corynuropis tenuicaudatus, Scott (MS. name). 



Female. Length 1-7 mm. Body elongate-pyriform, composed of five segments, the first 

 equal to the combined length of the other body-segments and abdomen; forehead narrowly 

 rounded. Anterior antennae slender, 5 -jointed, and bearing a number of long plain 

 setEe, especially at the extremity, where there are six or seven of considerable length ; the 

 second and fourth joints are subequal and fully twice the length of the third joint, as 

 shown by the annexed formula : — 



Anterior antenna;. 14 . 20 . . 23 . 14 

 I 2 3 4 W 



The basal joint of the posterior antennae short ; the primary branch moderately stout, 

 2-jomted ; the end joint about three-fourths the length of the first ; the integument of both 

 partly covered with fine cilia. Secondary branch rather longer than the first joint of the 

 primary branch, 8-jointed; all the joints small except the first, which is nearly equal to 

 the entire length of the next three ; the last joint of the principal branch and all the 

 joints of the secondary one are furnished with very long plumose setse (fig. 13). 

 Mandibles with a broad dentate biting part ; the principal branch of the palp is furnished 

 with long aculeate sette, and the small secondary branch with plumose setae (fig. 14). 



