REPORT ON THE AMPHIPODA. 1643 



rhronimiden, on which Mr. Giles has relied, repeats the erroneous statement which he had 

 already himself corrected, that the second perseopods are longer than the first. 



The third species, " Bhabdosoma investigatoris, n. sp. PI. IV.," is briefly compared with the 

 descriptions of Rhahdosoma armatum. "Whether the species here discussed is really 

 new may need some further enquiry. It is said that two specimens were obtained, one 

 male and the other female, " the latter being that shown in the figure." Mr. Giles remarks 

 that " It is probably an adult, as the broad pouch, although empty, is well-marked and 

 of considerable size." The figure, however, shows the characteristic upper and lower 

 antenna? of the male, as well as the long mandibular palp of that sex. Since the specimens 

 were respectively only an inch and half an inch long, the small differences from Claus' 

 figure and description of Bhabdosoma armatum, $ , may be accounted for by individual 

 variation or difference in age. Mr. Giles considers that Claus has proved the specific- 

 identity of Rhahdosoma armatum (Milne-Edwards) and Rhahdosoma whiter, Spence Bate. 



The fourth species, " Amphiprono'e longicornuta, n. sp., PL V.," is called in the "Explanation of 

 the Plates" Amphiprono'e longicornutus. It is said that "the animal agrees well with all 

 the characteristics of the genus as given in Spence Bate, though the 8th thoracic appendage 

 [fifth pereeopods] would perhaps be better described as stunted than as rudimentary." The 

 difficulty connected with the genus Amphipronoe is here overlooked, for in the definition 

 of that genus Spence Bate includes the character, "First pair of gnathopoda complexly 

 subchelate ; second pair not subchelate," whereas in the new species the two pairs of 

 gnathopods "closely resemble each other" and "they are provided with a curious complex 

 subchela." The species clearly belongs to the genus Lycxa, Dana, as interpreted by Claus. 

 The muscles of the antennae and gnathopods are here discussed by a competent observer. 



The fifth species " Lestrigonus hengalensis, n. sp., Pis. VI. & VII.," is referred to Lestrigonus, 

 not on the ground that Lestrigonus is distinct from Hyperia, but on the supposition 

 apparently that it is the older name. The new species is extremely small, males with 

 antenna? indicating the adult stage being only 2-5 mm. long. It bears some resemblance 

 to Hyperia dysschistus of this Report, but is distinguished from it by the telson and 

 uropods. 



The sixth species " Eurystheus hirsutus, n. sp., PL VIII.," should perhaps rather be named 

 Gammaropsis hirsutus. The side-plates as figured are remarkably shallow. 



1887. GUERNE, J. DE. 



Sur la faune des iles de Fayal et de San Miguel (Agores). Comptes Rendus 



Hebdomadaires des seances de l'Academie des Sciences. Tome CV. No. 17 



(24 October 1887). Paris, 1887. pp. 764-767. 



Allusion is made to the Amphipod soon afterwards named Orchestia chevreuxi, found in the 

 Caldeira of Fayal. 



1887. GUERNE, J. DE. 



Notes sur la faune des Agores : Diagnoses d'un Mollusque, d'un Rotifere et de 



trois Crustaces nouveaux. Le Naturaliste. Revue illustree des Sciences Naturelles. 



Paris, 1887. (Extract, 7 pages.) 



Orchestia chevreuxi, nov. sp. is thus described; — "Femina. Antenna? superiores paulo ultra 

 articulum pedunculi penultimum antennaruin inferiorum porrectae. Pedes secundi paris 

 articulo quarto aculeis duobus armato ; carpo elongato. Pedes quarti paris perbreves 



