FROM THE MONTE BELLO ISLANDS. 663 
Milne-Edwards, given in Kossmann’s synonymy; Illus. Zool. 
‘Investigator,’ Crust. Part vi. 1898, pl. xxxv. figs. 2, 2a. 
Under stones in ‘lagoons’; Monte Bello Islands; June to 
Aug., 1912; No. 114: 1 2 juv. 20°3 mm. long, including rostrum, 
14 mm. wide. 
This specimen already shows the second or posterior spine on 
the outer margin of the rostral horn; it is considerably smaller 
than the anterior spine. It is not shown in the ‘ Investigator’ 
figure. 
Distribution. Straits of Malacca (Alcock) ; West Australia, 
3 to 5 fathoms (ers). 
Family PARTHENOPID4S. 
PartHENOPE (RHINOLAMBRUS) PELAGICA (Riippell). 
Lambrus (Rhinolambrus) pelagicus Alcock, Jour. Asiat. Soc. 
Bengal, vol. Ixiv. 1895, p. 267, and synonymy. 
Home Lagoon, Hermite; June 13, 1912; No. 103a: 16. 
Special locality not given: Go 
Order STOM ATOPODA. 
PRorosquInnA TRISPINOSA (Dana). (PI. IL. figs. 11, 12.) 
See Borradaile, in Willey’s Zool. Results, Part iv. 1902, p. 400. 
Dredged off Hermite, 3 fathoms ; in hole in piece of rock; 
Silva, NOM pINow) Wi: Oe 
Special locality not given: 1 @, variety. 
Length of larger specimen (variety) 41 mm., of smaller speci- 
men 25 mm. 
The smaller specimen agrees with Borradaile’s amended 
description and figure, except that the fourth abdominal segment 
is corrugated much as the fifth is, only more faintly ; the sides of 
the first, second, and third segments are also lightly carinated 
with three or four smooth ridges. 
The larger specimen, which I take to be the same species, has 
some curious differences. The fourth abdominal segment and the 
sides of the first, second, and third are nearly smooth, which 
brings the specimen nearer to Borradaile’s, which was of the 
same size. ‘he fifth segment is bordered posteriorly by fine 
spinules. On the sixth and seventh segments, the spinules are 
shorter and stouter than in the small specimen, telson considerably 
wider than long, its three knobs less circular than in Borradaile’s 
figure and in our small specimen, the outer knobs pear-shaped, 
the inner one subtriangular; the marginal lobes are not curved 
inward and are separated by shorter slits than in the smaller 
specimen ; there is a carina parallel to the lateral margin, armed 
like the margin with spinules. 
Colour-markings. —Vhe specimens are preserved in formalin and 
