CIROLANA CRANCHII, 297 



confines his specific description to four lines, given as a 

 quotation from Leach : " Corps lisse ponctue ; le dernier 

 article de I'abdomen triangulaire, arrondi a son extre- 

 mite, lame externe des dernier es fausses pates plus grande et 

 plus large que Vinterne ; cette derniere tronquee a son extre- 

 mite.''^' Leach's description is, however, confined to the 

 pereion and last joint of the pleon, and M. Milne Edwards 

 appears to have intercalated the latter portion of his 

 characters from Leach's general observations on the third 

 race of the Cymothoadae (comprising the genera Eury- 

 dice, Nelocira, and Cirolana) : " dans ces trois genres la 

 petite lame ventrale posterieure externe est plus grande 

 et plus large que I'interieure." In Eurydice, however, as 

 well as in the only species of Cirolana described by 

 Leach, the inner plate is considerably the larger, its 

 inner margin being somewhat obliquely truncate, whilst 

 the outer plate is the smaller, and is more or less pointed. 

 Mr. A. White unintelligibly says, " small plates of the 

 posterior ventral appendages larger and wider than the 

 inner." As will be seen in our lower left-hand figure v at 

 the head of this species, the outer plate (at the right side 

 of the figure) is small and elongate-conic, the inner plate 

 much larger, and somewhat obliquely truncate, whilst the 

 basal portion is furnished with a conical j)oint, extending 

 half the length of the inner plate. The appendages as 

 well as the edges of the terminal segment of the tail are 

 strongly fringed with setae. The legs are but slightly 

 spinose and rather slender. The ridge between the base 

 of the lower antennae is not so narrow as in C. spinipes. 



* M. Milne Edwards, in his generic character of Cirolana, describes the two 

 plates of these lateral caudal appendages as being "a peu pres de meme 

 grandeur," but in his description of C hirtijies he says that " I'interne est 

 plus large que I'externe," and in C. dongata " lame externe trfes petite, I'in- 

 terne grande et arrondie au bout." 



