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



Lysiosquilla eusebia. 



Squilla eusebia, Risso, Crust, de Nice, p. 113 (1816); Hist. Nat. 

 Europe Merid. v. p. 87, pi. iv. fig. 15 (1826) ; Kessler, Horse Soc. 

 eutom. Rossicee, iv. p. 41, pi. i. fig. 5 (1866-67) ; Nardo, Annot. 

 Crostacei, iu Mem. Instit. Veneto, p. 328, pi. xiv. fig. 7 (1868). 



According to M. Risso, the head terminates in a long- 

 spine (the rostral plate) ; the carapace is nearly flattened, 

 oblong, smooth, with brown punctulations ; the eyes are 

 greenish ; the lateral scales (antennal scales ?) oval, ciliated ; 

 the first pair of legs rather long, filiform, armed with ten very 

 slender pectinately-disposed spines, the other legs short, nacre- 

 ous ; the postabdominal segments smooth, rounded, but little 

 convex, of a rosy red, punctulated with brown, the first three 

 less dilated than the median ones, the last armed with six 

 small spines on each side and eight scarcely discernible ones 

 on its summit ; caudal plates oval, ciliated, the median one 

 (basal prolongation ?) with two spines, the terminal one very 

 small. 



Hah. Mediterranean. 



According to M. Kessler, the rostral plate in this species is 

 quadrangular, somewhat broader than long, its anterior margin 

 with a sharp tooth-like median lobe ; the dactylus of the rap- 

 torial limbs is armed with eleven spines (besides the terminal 

 spine) in his specimens. 



Lysiosquilla (Coronis) latifrons. 



Squilla latifrons, De Haau, Faun. Japon. Crust, p. 222, pi. li. fig. 3 

 (1849). 



Carapace longer than broad ; posterior margin twice as 

 broad as the anterior, with the antero-lateral angles obtuse 

 and the postero-lateral broadly rounded. Rostrum broader 

 than long, with the antero-lateral angles rounded, and with 

 a long median spine. A small spine on each side of the 

 antennal segment. Dactyli of the raptorial limbs with seven 

 spines. Lateral processes of the exposed thoracic segments 

 truncate. Appendages of the thoracic limbs ovate, and 

 broader than in the young L. maculata. Sixth postabdominal 

 segment obliquely sulcated near the lateral margin ; posterior 

 margin entire, with only a single spine near the postero-lateral 

 angles. Seventh segment twice as broad as long, convex, 

 with seven spinules disposed in a transverse series behind the 

 middle line ; the median flat, trigonous, and not produced at 

 base, the next on each side produced at base on its outer 

 margin, the third somewhat thickened at base ; postero-lateral 

 margin with three narrow acute spines (the last mobile), a 



