60 Rev. T. E. R. Stebbing on a new 



proidia and Stegoplax ought to be united, in which case, by 

 priority of date, Cyproidia will take precedence. Whether 

 the peculiar development of the side-plates justifies the esta- 

 blishment of a new family or subfamily to receive the genus 

 may be for the present left open to consideration. The general 

 aspect of the animals recalls the Stenothoinae, but the maxil- 

 lipecls exclude them from that group, while there is nothing 

 in the characteristics of the Amphilochinae to make their 

 admission into that group impossible. The cementing toge- 

 ther of the third and fourth side-plates, and the covering up 

 of the sixth by the fifth, of which Mr. Haswell speaks, do not 

 appear to be characters of the European species. The English 

 species, unlike that described by Prof. Sars, has the first joint 

 of the fourth peraeopod dilated. 



The species now to be described I received, along with some 

 very prettily mounted Copepoda, from Mr. C. W. Parker, of 

 Warren Cottage, Starcross, in Devonshire. In answer to my 

 inquiry, Mr. Parker said that he collected the specimens at low 

 tide at Straight Point, and that my friend the Rev. A. M. Nor- 

 man, to whom he had also sent specimens, promptly recognized 

 them as the fellows of one which he had himself previously 

 found, but which was not yet described. 



The eyes are small, round, red, with about twenty com- 

 ponents. The rostrum is small. 



The upper antennae have a stout peduncle, the first joint 

 as long as the other two united, each joint successively being- 

 thinner as well as shorter than the preceding. Of the flagel- 

 lum the first joint is stout, fringed below with seven long, 

 divergent, not tapering, setae ; of the three remaining joints 

 the third is the longest and thinnest, prettily coloured with 

 purple. The secondary, flagellum is minute, one-jointed. 



In the much slenderer lower antennae the fourth and fifth 

 joints of the peduncle are nearly equal in length 5 the flagellum 

 consists of four tapering joints. 



The upper lip is incised at the extremity, one lobe being 

 larger than the other. 



In both mandibles the molar tubercle is strongly developed, 

 with sinuous rows of minute sharp teeth. The spine-row 

 consists of six curved spines. The cutting-edge is divided 

 into eight or nine unequal irregular teeth, minute but sharp. 

 In one mandible, but, I think, not in the other, there is a 

 secondary plate, also sharply toothed. The palp is small, three- 

 jointed, so delicately transparent as to be difficult to see. 



The first maxillae are slender, having the outer plate topped 

 with some eight spines, the two-jointed palp with four. The 

 inner plate has not come under my notice. 



