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90 STALK- AND SESSILE-EYED CRUSTACEA 
95. Gonodactylus trispinosus. 
Gonodactylus trispinosus,* List. Crust. Brit. Mus. p. 85, (1847), 
sine deser.; Dana, U.S. Explor. Exped. xii, Crust. part 1, p. 623, 
(1852); Heller, Voy. Novara, Crust. p. 126,/(1865). 
Carapace nearly oblong, unarmed. Front with three spines, one 
longer median, and two lateral. Anterior Jegs with the second joint 
very large, the terminal unarmed. Abdomen with the antepenulti- 
mate segment slightly, and the terminal segment closely, longitudinally 
rugose; terminal segment concave aboye, with four rounded pro- 
minences or tubercles at base, and three placed in a triangle on the 
upper surface, which is longitudinally rugose ; posterior margin crenate. 
Length about 15 in. (D.). 
Auckland (Heller). 
Found also at the Fiji Islands, and at Swan River, Australia, where 
the type specimen in the Collection of the British Museum was 
obtained. 
Il. EDRIOPHTHALMATA. 
Edriophthalmata, Leach, Linn. Trans. xi, p. 307, (1815). 
Edriophthalmes, M. Edw. Hist. Nat. Crust. 1, p. 234, (1834). 
Edriophthalmia, Dana, (part) U.S. Explor. Exped. xiii, Crust. part 1, 
p- 8, (1852). 
Malacostracous Crustacea, with mandibles and maxillipeds adapted 
for mastication, sessile eyes, and destitute of a carapace. (No branchie 
properly so ‘called, respiration being effected by the modification, 
wholly or in part, of some of the thoracic or abdominal appendages.) 
Tribe I. ISOPODA. 
Isopoda, Latr. (part) Fam. Nat. p. 290, (1825); M. Edw. Hist. Nat. 
Crust. i, p. 234, (1834); Dana, U.S. Explor. Exped. xu, Crust. 
part 1, p. 12, (1852). 

* Tt is evident, from this and other references in his Volumes, that Dana 
had seen proofs of the then unpublished plates of the Crustacea of the 
“Erebus and Terror,’ by which he was enabled to identify the specimens 
collected by him, with White’s undescribed species. He has, in some instances, 
added descriptions and thereby has secured the priority of nomenclature. Four 
of these plates, with descriptive text by myself, have been published lately by 
Mr. Janson with the remainder of the unpublished stock of the work. Of the 
other plates no proofs could be discovered at the time; one has since been 
brought to light, and the figure of Sevolis latifrons has been reproduced from 
it for this Catalogue. 
