284 A HISTORY OF EECENT CRUSTACEA 



claws have seven teeth. This species, originally described 

 from Chili, has been found also in New Zealand, a locality 

 to which Squilla nepa, Latreille, has likewise been assigned, 

 but of its occurrence there Mr. Charles Chilton thinks there 

 is much doubt. The genus Ghlorida, Eydoux and Souleyet, 

 1841, had a preoccupied name, which was changed into 

 Ghloridella by Miers in 1880, but Professor Brooks thinks 

 it unnecessary to separate it from Squilla. 



Squilla scabricauda, Lamarck, is from the Antilles. 

 Desmarest's figures of it (see Plate XIII.) are designed to 

 show the series of limbs as distinctly as possible, the small 

 first maxillipeds being pulled back behind the large second 

 pair, which would otherwise obscure them. The species 

 should probably be referred to Lysiosquilla, the genus next 

 mentioned. 



Lysiosquilla, Latreille, 1825, has the terminal joint of 

 the second maxillipeds not enlarged at the base, and armed 

 with more than six spines. The pleon is depressed, loosely 

 articulated, and wide. The outer spine of the ventral 

 prolongation from the peduncle of the uropod is usually 

 longer than the inner. Between the submedian and inter- 

 mediate marginal spines of the telson there are no more 

 than four secondary spines, and there is often only one 

 spine. The species Goronis scolopendra, Latreille, has been 

 incorporated in this genus, the generic name Coronis, 

 though earlier, having been preoccupied. Lysiosquilla 

 maculata (Fabricius) has nine spines on the claw of the 

 adult male, and seven or eight on that of the female, those 

 of the female moreover tending to weaker development, 

 although, it is said, such ' secondary structural differences 

 between the sexes are extremely rare among the Stoma- 

 topoda.' Lysiosquilla spinosa (Wood Mason) is found at 

 various parts of New Zealand, and is there the only species 

 of the genus, according to Mr. Chilton, who has recently 

 re-described it, with special reference to the apparatus on 

 the first pleopods of the male. Lysiosquilla excavatrix, 

 Brooks, has on its claw fourteen or fifteen short curved 

 pointed teeth, besides the long terminal one. The whole 

 dorsal surface, rostrum and telson included, is smooth and 



