NO. 1573. PA a A SITIC COPE PODS— 1 1 'I I. SON. 439 



Genus PROS^^-TES, new genus name. 



Stasiotoi rhinodontis Wkight, ]874, p. 588, pi. xxxv, ligs. 1 to 4. 



In the above year E. P. Wright published an account of a new 

 genus belonging- to the Pandarintie, whicli he named Stasiotes. 



As this name had been emplo3"ed by Jan for a snake genus in LS62, 

 the name Prossetes is suggested in its place. 



The parasites, to the number of 40 or 50, all females, were 

 obtained from the gills of a huge shark, Rliinodon typicus Smitli, at 

 the Seychelles Islands. This is one of the largest and least known 

 of the sharks, thus ex])laining the fact that this parasite has not been 

 seen l)y any other investigator. 



Female. — Carapace as broad as long; frontal plates distinct, but 

 not ])r()minent; lateral areas wide and divided by transverse grooves 

 as in Echtlirogaleus; posterior lobes wide and evenly rounded. 



Second tliorax segment short, with^ broad lateral lobes; third 

 segment longer, but without dorsal plates or IoIjcs; fourth segment 

 very small, with a rudimentary pair of dorsal plates fringed with 

 bristles. Genital segment orbicular, wider than hmg, with a shallow 

 posterior sinus; a pair of legs visible at the posterior corners. Abdo- 

 men wedge-shaped, one-jointed, and wholly concealed beneath the 

 genital segment; anal lamina? long, narrow, and projecting beyond 

 the posterior margin of the genital segment. 



Appendages like those of Nesippus; second maxillipeds not 

 swollen, armed with a long terminal claw, both the claw and the joint 

 which carries it furnished with a large spine. 



All the swinuning legs biramose, rami of the first three pairs two- 

 jointed, with plumose seta^, of the fourth pair with fused joints and 

 non plumose seta?. Egg-strings unknown. 



(Prossetes, 7rpoaaiTi/g, a beggar who is very persistent.) 



Genus NOGAUS Leach. 



This genus furnishes one of the best examples of a ])otpourri that 

 has ever appeared on the pages of science. 



Originally founded l)y Leach in 1819 upon a single male specimen 

 which he called Nogaus latreillii, it t[uickly grew into a group of a 

 dozen or more species. Nor did these additions cease when it became 

 known that the genus as such could not stand, but new species have 

 appeared at intervals up to the very beginning of the present century. 

 In consequence there are now about twent v of these forms heterogene- 

 ously grouped about an imaginary type known as " Nogagus." °' 



« Milne Edwards substitutes this spelling for that originally given by Leach, Des- 

 marost, and Burmeister witliout a word of explanation or justification. Subsequent 

 writers ha\-e followed him rather than the founder of the genus. 



