23 1 COLLECTIONS FROM MELANESIA. 



and is separated by a triangulate notch from the rounded fourth 

 lobe or internal orbital angle. The basal joint of the antenna; is 

 armed with a minutely granulated or denticulated ridge. The 

 merus-joint of the anterior legs has four spines on its anterior 

 margin, including a very small spinule at its antero-internal angle ; 

 the wrist has a strong spine on its inner margin and two small 

 spinulcs on its outer surface ; and the palm (as in G. affine) has 

 five spines on its upper surface, the two anterior being very small. 

 The fifth ambulatory legs have a strong spine, situated nearly at the 

 distal end of the posterior margin of the merus-joint, and another 

 on the posterior margin of the carpus ; the flattened terminal joint 

 has a small spinule at its distal extremity, but is otherwise un- 

 armed. 



From the preceding species, to which it is very nearly allied, 

 G. spiniferum is distinguished by the greater transverse width of 

 the carapace, the different form of the frontal lobes and of their 

 intervening fissures and of the lateral teeth (see the figure). Gonio- 

 soma hellerii, A. M.-Edwards *, from New Caledonia, which resembles 

 this species in having five spines on the upper surface of the palm, 

 and the merus-joint of the fifth ambulatory legs armed with a 

 strong distal spine, differs in the form of the carapace and frontal 

 lobes, and has the penultimate joint of the fifth ambulatory legs 

 denticulated on its posterior margin, &c. 



75. Nectocarcinus integrifrons (Latr.). 



There are three females of this species in Dr. Coppinger's collec- 

 tion, from Port Jackson, 0-7 fms. (Nos. 90, 104). 



A specimen from the same locality is in the British-Museum 

 from the collection of Mr. Cuming, and another dredged in the 

 same harbour on the Sow and Pigs Bank, and presented by John 

 Brazier, Esq. ; also from Port Curtis (H.M.S. ' Herald') and 

 New Zealand, Bay of Islands (Antarctic Expedition) ; also from 

 Oceania (J. Macgitiivray, H.M.S. ' liattlesnake') ; and others with- 

 out special locality. 



Dr. Kinahan records it from Port Phillip, Victoria. 



76. Lupocyclus rotundatus, Adams Sf White. 



A female is in the collection from Port Molle, Queensland (first 

 collection, No. 118), and another from Friday Island, 10 fms. (second 

 collection, No. 153), which I think must be referred to this species, 

 although the carapace is somewhat broader, more convex, and less 

 distinctly granulated, and the frontal lobes more acute than in the 

 adult specimen in the British-Museum collection from Balambangan, 

 N. Borneo, on which presumably the description of Adams and 

 White was founded. 



As the Bornean example is a male, the distinctions between the 



* Bull. Soe. Entom. rip France, vii. p. 282 (1867). 



