I 



410 Transactions of the Society. 



the water at express speed with a S. triophthaima in its jaws, 

 which it was devouring. Seizing the opportunity, I secured 

 and mounted all three in a slide. The male is small, conical 

 in shape, has no mouth, mastax, stomach, or intestine ; a small 

 rounded sperm-sac takes the place of the stomach. The 

 front of the head carries the usual four styles. The median 

 frontal tubular antenna, which is so prominent and characteristic 

 in the female, is also present, but of small size ; in addition to 

 this, the male has on the front two small tubular antennae, one on 

 each side, which is very strange. Further, it has at the extreme 

 front of the head, but slightly ventral in position, two stout, fleshy, 

 freely movable processes, surmounted by a broad brush of long stiff 

 hairs. In no other male have I seen such organs. 



A deep red eye, usually imbedded in a mass of semi-opaque 

 granules, is present. Size of male 149 /x ( T f q in.). 



Mr. Dixon-Nuttall has made excellent drawings of the male 

 and female from living specimens (figs. 19 and 19a), by means of 

 which this species will be readily identified. 



Syncheeta neapolitana sp. n 

 PL V. fig. 9. 



Spec. Char. — Body small, top-shaped, sometimes swollen at 

 sides ; head broad, and rounded in front ; four frontal styles ; 

 auricles fairly large ; lateral antennae very small, situated two- 

 thirds down the sides of the body ; eye red, cervical ; foot with 

 two distinct joints, the last joint bearing a blunt spur, and 

 carrying a single pointed toe. Size: female up to 163 /j, (y^^ in.) 

 long by 108 /a (^5 in.) wide at the auricles ; male 75 //. (g^ n in.) 

 long. Marine. 



In June 1897, Mr. H. S. Jennings of U. S. America sent me, 

 from the Zoological Station at Naples, a rough sketch of a 

 Synchseta which had just been collected in very large numbers in 

 the open sea in the Bay of Naples, showing a spur-like projection 

 ■on the foot as its most distinctive feature. At that time I was 

 unable to recognise or diagnose this animal, but having since made 

 a careful study of, and become personally acquainted with, all the 

 known species of Synchpetre, and having also received some pre- 

 served specimens from Mr. Jennings, I can now say that it is un- 

 doubtedly a new species, which I have named S. neapolitana. 



A very few specimens of the somewhat larger S. triophthaima 

 I discovered in the same material. 



From the Director of the Naples Zoological Station I learn 

 that this new Synchceta neapolitana appears in the bay occasionally 



