ISOPOD GENUS LIGIA. 695 



8. LiGiA ITALICA Fabricins. (PL II. figs. 11 & 12.) 



Ligia italica Buckle-Lund (1885), p. 269 {q. v. for synonymy). 

 Ligia italica Budde-Luncl (1908 «.), p. 11. 



Male specimen described. 



Length 8'5 mm. Breadth 3 "5 mm. 



Surface nearly smooth ; scattered minute gTanules. Eyes of 

 moderate size, somewhat rectangular and separated by horizontal 

 length of one eye or a little less. A^itenoice long and slender; 

 flagellum reaching as far as hind border of 6th thoracic somite, 

 peduncle to the 2nd. Flagellum with 18-20 long and slender 

 segments. Coxal plates either exceedingly faintly separated or 

 the division is apparently obsolete. In the female the separation 

 is marked, but not very distinctly, on the 2nd, 3rd, and 4th 

 thoracic somites. They are but little produced backAvards on any 

 somite. Abdomen abruptly contracted ; latei-al margins of somites 

 only very slightly produced backwards. Telson arcuate ; postero- 

 lateral processes obsolete ; only slight undulations mark the 

 accessory processes. Mouth-parts : 2nd maxilla strongly bilobed, 

 without hairy bristles ; maxillipede with five joints indistinctly 

 separated. Ferceopods typical in form. Uropods 4 mm. 



Distribution. " A common species on the sea-shore in almost all 

 the counti-ies adjacent to the Mediterranean Sea, also found in 

 the Madeira and Canary Islands" (Budde-Lund (1908a)). 



I agree with Budde-Lund in looking upon Brandt's ehrenbergii 

 as a synonym, but, also with him, I am doubtful of the identity 

 of the specimen described by Dana under that name (1852), The 

 matter is further discussed under L. gracilipes. 



9. Ligia gracilipes Budde-Lund. (PI. II. figs. 13, 14, & 15.) 



Ligia gracilipes Budde-Lund (1885), p. 270. 

 '^Ligia ehrenbergii Dana (1852), p. 738. 

 ILigia dilatata Collinge (1920), p. 475. 



The somewhat macerated condition of the specimens makes 

 it impossible to give a complete description of any one. The 

 following account applies to the female, and as I cannot be positive 

 that any of the specimens were males, I have not referred to the 

 characters of that sex. 



L^ength 7 mm. Breadth 3*5 mm. 

 . Surface minutely granulated, EyesX&vge and separated by less 

 than their horizontal length. Antenna', extraordinarily long and 

 slender. "Whole appendage one-quarter as long again as thorax 

 and abdomen together ; peduncle reaching as far back as hind 

 border of penultimate abdominal somite. Flagellum Avith 22 

 (Budde-Lund) veiy long and slender segments. (A separate 

 antenna had 28 segments ; each segment was about five times as 

 long as broad.) Coxal plates separated by deep grooves on 2nd, 

 3rd, and 4th thoracic somites, and distinctly marked on the 5th. 

 Abdomen abruptly contracted. Telson arcuate ; the postero-lateral 



