14 Mr. E. J. Miers on the Squillidse. 



strap-shaped and dilated, but not to so great an extent as in 

 the typical species of the section Coronis of the genus Lysio- 

 squilla. 



The Squilla ichneumon of Fabricius, Ent. Syst. Suppl. 

 p. 416 (1798), may belong either to this genus or to a species 

 of the first section of the genus Squilla. 



The Squilla phalangium of the same author (I. c.) is so 

 briefly described that it is impossible to say whether it belongs 

 to this genus, Lysiosquilla, or Pseudosquilla ; in the five- 

 spined dactylus of the raptorial limbs, which has the third and 

 fifth spine longest, it appears to resemble Lysiosquilla acan- 

 thocarpus ; and that species may prove to be identical with it. 



Ghloridella microphthalma. (PL II. figs. 1-4.) 



Squilla microphthalma, M.-Edwards, Hist. Nat. Crust, ii. p. 523 



(1837). 

 Chlorida microphthalma, Eydoux and Souleyet, Voy. Bonite, Cr. p. 2G6 



(1841). 



A single specimen, which I refer to this species, is in the 

 Museum collection. The body is somewhat loosely articulated 

 and depressed. The carapace is smooth, widening posteriorly, 

 with a small spine at the antero-lateral and broadly rounded 

 at the postero-lateral angles. The rostral plate is small, 

 semioval, and regularly rounded. The fourth thoracic seg- 

 ment is scarcely at all laterally produced, but is armed on each 

 side with a very small spinule ; the fifth, sixth, and seventh 

 are broader, but little produced and rounded on the sides ; the 

 first to fifth postabdominal segments are smooth in the 

 middle of the dorsal surface, but are faintly marked with two 

 lateral carinas ; the postero-lateral angle of each segment is 

 acute ; on the sixth segment the submedian as well as the 

 lateral carinas are present, and all terminate in spines. The 

 terminal segment is broader than long, with a median obtuse 

 crest, and on either side of it several irregular tubercles, and 

 with six acute marginal teeth, between which are a number 

 of smaller spiniform teeth. The antennal scale is very small. 

 The dactyli of the raptorial limbs are four-spined, the terminal 

 spine being very long. The uropoda are small ; the basal 

 prolongation is armed on its inner margin with a series of 

 small spinules (as in G. decorata) ; the inner of its two terminal 

 spines is the longest, and armed with a blunt tooth on its 

 outer margin. Length about \\ inch. 



The specimen in the Museum collection is a male, and was 

 obtained at Port Essington by Mr. R. Tilston. Its integu- 

 ment is remarkably thin and fragile. It differs somewhat in 

 the form of the rostral plate from Milne-Edwards's description 



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