Mr. E. J. Miers on the Squillidae. 11 



single spinule between the anterior spines, three between the 

 posterior ; posterior margin with about ten very minute 

 spinules, separated by a sinus in the middle line ; lower sur- 

 face with a spine behind the anus. Inner spine of the basal 

 prolongation of the uropoda unispinose at base on its inner 

 margin. 



Hab. Japan. 



The above description is modified and considerably abridged 

 from that of De Haan. I have seen no specimens of this 

 species. 



Lysiosquilla Brazieri, sp. n. (PI. I. figs. 3-6.) 



I designate by this name a female specimen, obtained by 

 John Brazier, Esq., at Port Jackson in three fathoms of 

 water, on the Sow-and-Pigs Bank. It is evidently closely 

 allied to L. latifrons, but differs in having the dactyli of the 

 raptorial limbs six-spined, in the posterior margin of the 

 terminal segment being without a median sinus, and armed 

 with more numerous spinules (about fourteen), and particu- 

 larly in the appendages of the last pair of thoracic limbs 

 being scarcely dilated, almost linear, whereas those of the 

 two preceding pairs are ovate and broadly expanded. In this 

 respect this interesting form establishes a complete transition 

 between the typical Lysiosquillm and Coronis. The unique 

 example was presented by its discoverer to the British Museum; 

 and I have much pleasure in dedicating the species to him. 



Lysiosquilla acanthocmyus. (PI. I. figs. 7-9.) 



Coronis acantl/ocarpus, Gray (ined.), White, List Crust. Brit. Mas. p. 85 

 (1847), descript. nulla. 



The principal distinctive characters of this species are the 

 following : — The dilated basal portion of the rostral plate is 

 nearly quadrate, the antero- lateral angles being right angles 

 and not produced into spines ; the terminal median spine is 

 rather short and somewhat triangular, broadest at base. The 

 last postabdominal segment has six small similar spines in a 

 transverse series on its upper surface ; the lateral spines and 

 intervening spinules are nearly as in L. tricarinata. The 

 dactyli of the raptorial limbs are armed with six spines, the 

 one next the terminal spine being very small. The distal 

 prolongation of the basal portion of the uropoda ends in two 

 simple slender spines, the inner being the longer. Length 

 about 2| inches. 



The single specimen collected (a female) was obtained at 

 Port Essington by Sir J. Richardson, by whom it w r as pre- 

 sented to the British Museum. 



