302 COLLECTIONS FROM MELANESIA. 



The inner ramus of the uropoda is less distinctly triangulate than 

 in the specimens in the British-Museum collection from the Philip- 

 pines and Swan River*. The median lobe of the front is not at all 

 prominent. 



Reference to this species is omitted in Mr. Haswell's Catalogue. 



4. Cirolana schiodtei. (Plate XXXIII. fig. A.) 



Body narrow-oblong, microscopically punctulated, convex and 

 smooth, as in G. rossii. Head closely encased in the first segment of 

 the body, transverse, with scarcely any indication of a median inter- 

 antennulary rostral point, anteriorly bordered with a transverse groove 

 running parallel to and just behind the anterior margin ; there is a 

 similar groove bordering the posterior margin of the eyes. The 

 first segment of the body is longer than the following ; the postero- 

 lateral angles of the first four segments are rounded, those of the 

 fifth to seventh segments are right angles. Five or six postabdo- 

 minal segments are visible in a dorsal view ; the first five are very 

 short, the lateral angles of the second to fourth curve backward and 

 are much prolonged and acute or subacute ; the terminal segment 

 is widest at base, and beyond this subtriangnlate, with the lateral 

 margins converging in a gentle curve to the distal extremity, which is 

 acute or subacute ; the margins in their distal half are ciliated and 

 minutely serrated. The eyes, seen laterally, are oblong (as in C. 

 rossii) ; they each occupy rather less than one third of the total 

 length of the front margin of the head, and extend but a short dis- 

 tance over its inferior surface. The antennules reach nearly to, or 

 even a little beyond, the posterior margin of the head ; the joints of 

 the peduncle are short, the first two slightly more dilated than the 

 third, the flagellum composed of a great number of very short joints. 

 The interantennal plate (" lamina frontalis ") lies between the bases 

 of the antenna?, its sides diverge slightly from the base to a point 

 situate between the antennules and antenna?, where it bears a strong 

 tooth ; beyond this its distal e?^tremity is acute, and lies between but 

 does not completely separate the antennules. The antenna? about 

 reach to the posterior margins of the fifth body-segment. The 

 first two joints of the peduncles are very short, the third and fourth 

 somewhat longer and robust, the fifth yet longer, but slenderer than 

 the preceding : the flagellum is composed of a great number of joints 

 (50-65). The three posterior epimera have their postero-lateral 

 angles prolonged and acute. Xone of the legs of the body are 

 ancoral. The ischium- and merus-joints in the first three pairs are 

 dilated and dorsally produced. The margins of the third to fifth 

 joints in all the legs are clothed with stiff seta? ; the dactyli in all 

 arc but slightly curved. The bases of the uropoda are prolonged 

 at their inner and distal angles into a strong spine : the rami are 

 ciliated on the margins and acute at their apices, the outer much 

 narrower and a littlo shorter than the inner, which reach a little 



* Vide Journ. Linn. Soc. xiii. p. 511, pi. xxiv. figs. 6-11 (1878). 



