REPORT ON THE STOMATOPODA. "1 



three-lobed. Dorsal surface of telson with a broad unarmed median rid^e and on each 

 side of this a more protuberant longitudinal and somewhat uniform prominence, which is 

 convex on its lateral or external side, and concave towards the middle line. The telson 

 has a median notch on its posterior edge, and on each side of this there are' three obtuse 

 rounded marginal spines, of which the submedian is farthest back, and the lateral most 

 anterior. 



Length. — About three-fourths of an inch. 



Habitat.—A. Milne-Edwards records a single specimen of this species from St 

 Vmcent, and Miers a single male from Mauritius, and two smaU specimens, without 

 record of locality, from the " Herald " collection. 



Reviarks.— In Milne-Edwards' figures the carapace is represented rounded at its 

 anterior as weU as at its posterior angles, and nearly rectangular, and the fifth thoracic 

 somite is represented with rounded lateral edges, as are all the other thoracic and 

 abdominal somites. 



In my remarks on Protosquilla elongata I have given my reasons for regardin^^ that 

 species as distinct from this one. ^ 



3. Protosquilla trispinosa (White). 



Gonodactylus trispinosus, White, List Crust. Brit. Mus.-, 1847, p. 85. 



Gonodadylm trispinosus, Dana, J. D., U.S. E.xplor. E.xped., Crustacea, i. p. 623, 1852. 



Gonodactylus trispinosus, Heller, C, Eeise der Novara, 1868, Crustacea, p. 126.' 



Gonodactylus trispinosus, Miers, E. J., Cat. New Zealand Crust., 1876, p. 126. 



Gonodactylus trispinosus, Miers, E. J., On the SquUlidse, Ann. and Mag. Nat. Hist ser 5 



voL v., 1880, p. 121, pi. iii. fig. 10 (telson). 

 Gonodactyhis trispinosu^s Miers, E. J., Malaysian Crustacea, Ann. and Mag. Nat. Hist ser 5 



vol. V. p. 460. ' • I 



Diagnosis.— Protosquilla with the two antero-lateral spines of the rostrum nearly as 

 long as the median spine. The carapace is long, and nearly rectangular, with nearly 

 rectangular antero- and postero-lateral angles. The fifth abdominal somite is longi- 

 tudinally corrugated. The sixth is immovably united to the telson, although the suture 

 is clearly indicated ; its dorsal surface is marked by six smooth rounded tubercles. On 

 the dorsal surface of the telson there are three smooth rounded tubercles disposed in a 

 triangle, with the median one anterior to the two laterals. The posterior margin is 

 slightly notched in the middle, and is armed with very minute spines. 



Size. — About one and one half inches long. 

 • Habitat.— Yi]i Islands, Dana; Auckland, Heller; IMauritius, ? Hofi'mann; Swan Eiver, 

 Australia, iliers; Shark's Bay, Australia, Miers; Amboiua, Miers; Ceylon, fliers (var. ' 

 pulchella). 



Eemarks.— According to Heller's description the telson is rectangular and is armed 



