AMtHItOD GENUS leptocheirus. 563 



5. L. hirsutimanus Bate 1862 = Boechia typica Malm 1871 . Pleon- 

 segments not dentate, the 4th with a dorsal depression : 

 accessory flagellum 6-jointed : sideplate 1 small, hidden by 

 the large sideplate 2 : finger of gnath. 2 as in pilosus : fingers 

 of pera?opods 3-5 bifid : uropod 2 unusually massive. 



4. L. guttatas Grube 1864 = Ptilocheirus tricristatus Chevreux 



1886. Pleon-segment 4 with 3 medio-dorsal angles or teeth : 

 superior antennae not much longer than inferior ; accessory 

 fiagellum 2-3-jointed ; palmar maigin convex in 2 : finger of 

 gnath. 2 unguiform, acute : falciform processes of uropods 1 

 and 2 of great length : inner ramus of uropod 3 tipped with 

 1 spine. 



5. L. pectinatus Norman 1869 = Prototnedeia fasciata Costa 1864 



and L. dellavallei Stebbing 1899 : pleon- segments 4 and 5 each 

 with 2 dorso-lateral angles : sideplate 1 small, hidden by the 

 large sideplate 2 : accessory fiagellum 2-3-jointed : palmar 

 margin, gnath. 1, concave in S , convex in § ; finger of gnath. 

 1 exceeding the palm in length : finger of gnath. 2 straight, 

 laminar, tipped with setae. 



6. L. abe^^rans Ohlin 1895. 



7. L. bispinosus Norman 1908 = Protomedeia hirsutitnana Hellei' 



1866 and L. guttatus Delia Valle 1893 : resembles guttatiis. 

 Pleon-segments 4 and 5 each with 2 dorso-lateral angles : 

 accessory fiagellum 5- jointed : palmar margin, gnath. 1, 

 convex in $ : 2nd joint in gnath. 2 unusually long ; finger 

 as in guttatus : falciform processes of xiropods 1 and 2 of 

 great length : uropod 2 with two clusters of feathered setae on 

 the lower margin of the inner ramus. 



Fam. Photid^. 

 (For synonymy see Stebbing, Das Tierr. Lief. 21, p. 603.) 



Gen. Leptocheirus Zaddach. 

 (Stebbing, p. 625.) 



Leptocheirus pilosus Zaddach. (Plate XVII.) 



1844. Leptocheirus 2)ilosus Zaddach (53) pp. 8 & 9. 



1848. „ „ Muller (32) p. 62. 



1862. Protomedeia jnlosa Spence Bate (1) p. 168. 



1873. Leptochirus pilosus Mobius (30) p. 117. 



1878. Protomedeia pilosa Zaddach (54) pp. 18(k 19. 



1888. Leptocheirus pilosus Stebbing (42) see p. 1707 for references. 



1898. „ cor'?W6fa«.reiSowinski(41)p. 470, pi. ix. figs. 9-22. 



1906. „ /JtZosiis Stebbing (44) p. 630. 



1908. „ sM6safei6S Norman (38) p. 307, pi. xii. figs. 1-6. 



1910. ,, co7'mtaurei = sitbsalsiis Chevreux (18) p. 2. 



This species was fully described by Zaddach in 1844, and the 

 accuracy of his description will be seen on comparing his account 

 with the figures here given. In his later work, '■ Die Meeres- 



