408 Mr. Lubbock on new species of Entomostraca. 



ment ; the penultimate setse are short, the anterior antepenulti- 

 mate is longer again. 



The second pair of antenna have the lesser ramus nearly as large 

 as the other, and with six long terminal hairs. 



The maxillipeds have the five terminal segments united into 

 one, which, however, shows its compound nature by being pro- 

 vided with five lobes or shallow projections on one side. 



The first pair of legs have both rami three-jointed; the outer 

 branch has one hair on each of the two basal segments; the 

 inner branch has one hair on the basal segment, two on the 

 second, and six in all on the apical. 



The fifth pair of legs differ so much in Pontella, that the dif- 

 ferent species may generally be distinguished by them alone. 

 Their forms, however, are so irregular, as to be somewhat diffi- 

 cult of description. In this case both legs consist of three sub- 

 equal swollen segments, differing, however, in the two legs, and 

 ending in the right by a simple, rather long spine. There are 

 no setose hairs. 



The abdomen is five-jointed ; the caudal lamellae are about as 

 long as the posterior segment, and the setae are of the usual 

 length and comparative sizes. 



All the upper part of the body was colourless, the lower part 

 dark brown. 



Length of cephalothorax '03 of an inch, of abdomen -01 ; 

 total -036. Length of anterior antenna '028. 



Found at Weymouth, October 1857. There were not many 

 specimens. 



The female which I suppose to belong to this species was the 

 only female Pontellina I met with, as the male was the only male ; 

 they agree in the general form, in the anterior antenna of the 

 left side, the maxillipeds, first pair of legs, abdominal lamellae 

 and setse. Most of the specimens were colourless, but one was 

 black. 



The branches of the fifth pair of legs (PI. XL fig. 8) consist 

 of only one segment, and are of almost equal breadth through- 

 out ; the lesser branch ends in two equal teeth, and the larger 

 has the external angles produced into two spines, the inner one 

 being the longer, and also a still larger spine projecting from 

 the apex ; there is also a small spine on the middle of the outer 

 margin. 



PI. XL figs. 4-8. 



Corycaeus anglicus, n. s. 



Cephalothorax crassiusculus, postice acutus. Conspicilla larga, remo- 

 tiuscula. Antennse anticpe longe setigerse. Anteimarum secun- 

 darum digitus articulo secundo longior. Abdomen 2-articula- 



