400 ox THE STOMATOPODA AND MACRURA BROUGHT BY 



2. Protosquilla trispinosa (Dana), 1852. 



Gonodactylus trispinosus, White, List Crust. Brit. Mus. p. 75 (1847) nom. nud. ; 

 Dana, Zool. U. S. Expl. Espd., Crust, i. p. 623 (1852); Miers, Cat. N. Zeal. Crust., 

 p. 90; Ann. Mag. X. H. (5) v. p. 121, PL III. Fig. 10 (1880); Haswell, Cat. Austral. 

 Crust., p. 211 (1882). 



Protosquilla trispinosa Brooks, Challenger Stomatopoda, p. 71 (1886); Borradaile, 

 P. Z. S., 1898, p. 34, PI. V. Figs. 1, la (1898). 



The following is an amended diagnosis of this species : — 



"A Protosquilla with the lateral spines of the rostrum nearly as long as the 

 median; carapace with angles nearly rectangular, anterior more acute than posterior; 

 fifth and eighth thoracic segments with the lateral margin subacute, sixth and seventh 

 with the same somewhat square ; first abdominal segment with one, second to fourth 

 with two lateral sulci ; fifth longitudinally corrugated ; sixth with six tubercles bearing 

 fine spinules, and clearly marked off from the telson ; the latter with a median and 

 two lateral large tubercles covered with fine spinules, the median anterior to the two 

 laterals, and with the posterior border divided by deep narrow fissures into six lobes ; 

 submedian, intermediate and lateral spines of the telson small and sunk in notches, 

 several submedian spinules; outer spine of basal prolongation of uropod (6th abdominal 

 limb) larger than inner, not armed with a tooth on its inner margin." 



Length about 40 mm. 



For figures see P. Z. S. 1898, PI. V. Figs. 1, la. 



1 $ from Lifu, Loyalty Islands. 



Genus. Gonodactylus Latr., 1825. 



3. Gonodactylus chiragra (Fabr.), 1793. 



Squilla chiragra, Fabricius, Ent. Syst. in., 1, p. 513 (1793). 



Gonodactylus chiragra Latreille, Encycl. Meth., x. p. 473 (1825) ; Miers, Ann. 

 Mag. N. H. (5) V. p. 118 (1880); Haswell, Cat. Austral. Crust, p. 210 (1882); 

 de Man, Zool. Jahrb. x. Syst. p. 694, PL XXXTIII. Fig. 77 (1898); Borradaile, P. Z. S. 

 1898, p. 34, Pis. V. Fig. 4, and YL Fig. 8. 



Gonodactylus smithii Pocock, Ann. Mag. N. H. (6) xi. p. 475, PL XX. B, Fig. 1 (1893). 



De Man (loc. cit.) selects as the type of this species the form with the middle 

 keel of the telson anchor-shaped. He further separates from it a variety which he 

 names acutirostris and characterises as follows : — 



1. Middle keel of telson not anchor-shaped. 



2. Keels of submedian spines of telson converge from behind forwards. 



3. Outer angles of rostrum acute. 



There are in the present collection four specimens of a variety intermediate between 

 the type and var. acutirostris. .In these specimens the telson has not the anchor- 



