NAMES GIV'EN WITH A PUEPOSE 287 



tylus cJiiragra (Fabricius). The species appears to have 

 a vast range, and its colour is said to be exceedingly 

 variable. 



Goronidci, Brooks, 1886, has the carapace flat and 

 nearly rectangular. The rostrum ends in a small median 

 spine ; the scale of the second antenna is very small ; the 

 terminal joint of the second maxillipeds is dilated at the 

 base, and armed with spines on the inner margin. The 

 pleon is depressed; its hind segments and the telsou 

 are thickly set with small spines. The uropods are very 

 small. The name of the genus is compounded from the 

 names of the rejected genera Coronis and Chlorida (or 

 Chloridella), to indicate Professor Brooks's view that like 

 them it contains somewhat primitive species. These are 

 Coronida Bradiji (A. Milne-Edwards) and Goronida trccchfi^ 

 rus (Miers), both of which were originally assigned to 

 Gonodadylus. The professor seems inclined to suspect 

 that the sixth pleon-segment may prove to be fused with 

 the telson, but the type-specimens of Miers's species in the 

 British Museum show that at least in Goronida trachurus 

 the telson is quite distinct from the preceding segment 

 and freely movable upon it. 



Protosquilla, Brooks, 1886, has the rostrum furnished 

 vnlh. long acute median and anterolateral spines ; the eyes 

 and the scale of the second antennae small ; the terminal 

 joint of the i^econd maxillipeds dilated at the base, with- 

 out marginal spines ; the pleon convex, its sixth segment 

 more or less completely fused with the telson ; the uropods 

 small. Professor Brooks considers the name of this genus 

 ' the more appropriate inasmuch as all the other Stomato- 

 poda present evidences of divergent descent from a 

 common stem form, which, like the living representatives 

 of the genus Protosquilla, was characterised by the small 

 size of its eyes, antennary scales, and uropods.' Seven 

 species are included in the genus, among which Froto- 

 squilla elongata, Brooks, with a carinate and bilobed but 

 otherwise simply constructed telson, presents a rather 

 striking contrast to Protosquilla Guerinii (White), in 

 which the dorsal surface of the telson carries twenty-two 



