Mr. E. J. Miers on the Squillidae. 119 



second segment is somewhat rounded, that, of the third seg- 

 ment subtruncate, and that of the fourth segment narrowed 

 towards the lateral margin. Lateral margins of the first to 

 fifth postabdominal segments earinated, but on none of the 

 segments do the carina? terminate in spines ; the sixth seg- 

 ment is armed with six equidistant longitudinal prominences, 

 which are narrowed posteriorly and terminate each in a spine ; 

 the upper surface of the terminal segment is armed with three 

 elongated and convex prominences or tubercles, which do not 

 terminate in spines, and with four triangular marginal teeth, 

 of which the two posterior are very large, and tipped each 

 with a small mobile spinule. The antennules ami antennae 

 are small and slender ; the dactyli of the raptorial limbs are 

 without teeth on their inner margins, which are furnished 

 with two rows of granules in their basal, and with a thin 

 cutting-edge in their terminal half; the basal part of the 

 daetylus is considerably thickened externally, and the. styliform 

 terminal portion is acute and usually sinuate. The distal 

 prolongation of the base of the uropoda ends in the two 

 rather short strong spines (the outer of which has no tooth 

 on its inner margin). Length of a full-sized adult male 

 nearly 4 inches. 



This species is the commonest and most widely distributed 

 of the genus. The series in the British-Museum collection 

 includes specimens from the following localities : — Two males 

 from the Red Sea, Daedalus Shoal (Lieut.- Col. Play fair) ; 

 a female and young male from the Gulf of Suez (R. M* An- 

 drew, Esq.) ; three males and a female from Zanzibar (Dr. 

 Kirk) ; a fine adult male from Rodriguez Island (Gulliver in 

 Trans, of Venus Exped.) ; a male from India (Gardner) ; three 

 males from the Philippine Islands (Gv/ming and H. J. Veitch) ; 

 a male and two females from Australia (J. Macgillivray, Esq.) • 

 a male from the N.E. coast of Australia, and a male and two 

 females from Sir C. Hardy's Island (J. B. Juices, Esq.) ; three 

 males from Swan River (Mr. Dring) ; a male from North 

 Australia (Dr. J. R. Elsey) ; two females from Port Essington 

 (Earl of Derby) ; and a series of specimens from the Fiji 

 Islands, including four females and several young specimens 

 from Ovalau Reef, a male and two females from Ban, a female 

 from Conway Reef (H.M.S. ' Herald^), besides several speci- 

 mens collected in the same expedition without locality. The 

 only specimens from localities not included in the Indo-Pacific 

 Region are two from the Mediterranean that have long been 

 in the collection (but no authority is recorded for this habitat) , 

 a small male brought from Panama by Mr. Bridges, and two 

 males from a bottle containing Crustacea without definite 



9* 



