PLATE I. 



Fig. I. Benthesicymus Investigatoris A. And. Dorsal view of the eye-peduncles and of the anterior part 

 of the carapace of the female from Stat. 161, X 3; ia thelycum of the same specimen, X 6; 

 \b dorsal view of the caudal fan of the same female, x 3. 



Fig. 2. Gennadas Pasithea de Man, dorsal view of the antennular peduncles with a part of their flagella, 

 of the right scaphocerite, of the eye-peduncles and of the anterior part of the carapace, X 5 ; 

 2a left scaphocerite, X 8'/ 3 ; 2b left maxilliped of the second pair, > 6; 2c left maxilliped of 

 the third pair, X 6; 2cc lateral view of the terminal joint of this maxilliped, • i2'/ 2 ; 2c c c 

 terminal joint of the same maxilliped, looked at from above, X 17; ld — 2/1 the legs of the first 

 to the fifth pair, X 6; 2z' petasma, the left branch looked at from the outer side, x 15. In the 

 description of this species (p. 18 — 19) the whole petasma has been described, the two branches 

 taken together; the various parts are therefore here enumerated still once: a. one of the two 

 large, triangular, obtuse lobes (of the description), /3 the narrow tooth or spine, in which the 

 lateral lobe terminates, y the subacute, depressed, even slightly concave tubercle behind the 

 lateral lobe, § the posterior and s the anterior of the two tubercles, situated behind one another 

 at either side of the median line, y the small, compressed, narrow tooth or lobule between these 

 two tubercles; 2Ü free margin of the large triangular lobe and of the anterior tubercle, more 

 strongly magnified, X 30 ; Tiii two of the microscopical hooks with which the anterior tubercle 

 £ is covered, in a lateral view; 2iiii two of these hooks viewed from before, 2Üiii some 

 hooks of the foremost part of the large, triangular, obtuse, lobe ; the three last figures magnified 

 160-times; 27 thelycum, ■ 15. With the exception of Fig. 2j, all the figures are taken from 

 the male. 



Fig. 3. Gennadas clavicarpus de Man, lateral view of the carapace etc, of the type specimen, the adult 

 female from Stat. 128, X 6; 3a maxilliped 'of the second pair X 1 2'/ 2 ; 3/} external maxilliped, 

 ; i2'/ 2 ; y, ld, y legs of the first, second and third pair, X i2'/ 2 (the figures ^a — y all taken 

 from the adult female from Stat. 128); 3/ posterior view of the petasma of the male, long 

 23 mm., from Stat. 230, X 25; 3^ right-half of the petasma of the same male, looked at 

 obliquely from before, x 25. 



