Podoceridae, Laetmatophilus 695 



Synopsis of genera: 



IAntenna 1 without accessory flagellum — 2. 

 Antenna 1 (Fig. 122 p. 705) with accessory 

 flagellum — 4. 

 iPleon with only 5 distinct scgments preceding 

 the telson 1. Gen. Laetmatophilus p. 695 

 Pleon with 6 distinct segments preceding the 

 telson — 3. 

 f Pleon segment 5 carrying uropods ..... 2. (xen. Cyrtophium . . p. 697 

 \ Pleon segment 5 not carrying uropods ... 3. Gen. Leipsuropus . . p. 098 

 I 3 paii's of uropods (Fig. 125 p. 707) present — 5. 

 4 l Only 2 pairs of uropods (Fig. 127 p. 714) 

 ( present — 7. 



IAntenna 1 longer than antenna 2 4. Gen. Xenodice . . . p. 699 

 Antenna 1 shorter than antenna 2 (Fig. 122, 

 123 p. 705, 707) — 6. 



I Gnathopods 1 and 2 subchelate 5. Gen. Podocerus . . . p. 700 



) Gnathopods 1 and 2 (Fig. 124 p. 707) simple 6. Gen. Icilius p. 706 



( Last pair of uropods normal 7. Gen. Dulichia . . . . p. 708 



\ Last pair of uropods (Fig. 127) rudimentary 8. Gen. Paraduliehia . . p. 713 



1. Gen. Laetma-tophilus Bmz. 



1859 Laetmatophilus (Sp. un.: L. tuberculatus), R. M. Bruzelius in: Svenska Ak. 

 Handl., n. ser. v.3 nr. 1 p. 10 | 1886 L., Gerstaecker in : Bronn's Kl. Ordn., i?. 5ii p. 493 | 

 1888 L., T. Stebbing in: Rep. Voy. Challenger, v. 29 p. 1197 ] 1893 L., A. Della Valle 

 in: F. Fl. Neapel, ?;. 20 p. 316 | 1894 L., G. O. Sars, Crust. Norway, v.l p. 629 | 1873 

 Laetmopliilus, A.Marschall, Nomencl. zool., p. 411 | 1885 Laematophilus, Haswell in: 

 P. Linn. Soc. N. S. Wales, v. 10 p. 107, 110. 



Peraeon with raarked constriction between segments 1 and 2 ; segments 

 behind constriction much broader in Q than in ö . Pleon consisting of 5 segments, 

 each carrying a Single pair of legs; last 3 segments reflexed. Head with 

 frontal process carrying antenna 1. Side-plates small, 2*^ largest in d, 3*^ 

 in ^. Antennae 1 and 2 stroug, setose, with flagellum few-jointed; no 

 accessory flagellum to antenna 1; antenna 2 the longer. Upper lip bilobed. 

 Mandible with large palp; 3*^ Joint setose, broad ended. Maxiila 1. inner 

 plate small; palp 2-jointed. Maxillipeds, outer plates reaching much beyond 

 the smaller inner plates; 4:^^ Joint of palp bluntly conical. Guathopod 1 

 much smaller thiiu guathopod 2, ö^'^ and 6*^ joints subequal. Gnathopod 2, 

 5*^ Joint small, 6^^ broader in g , longer in ö; finger large. Peraeopods 1 — 5 

 subequal; 2^^ Joint not expanded, 6^'^ Joint the longest; tinger strong, curved. 

 Branchial vesicles very small. Marsupial plates large and broad. Pleopods 1 — 3 

 (Fig. 120 p. 696) feeble. Uropod 1 (Fig. 121 p. 696), inner ramus much 

 longer than outer. Following uropod (probably uropod 3) consisting of a 

 small simple plate. Telson simple, rounded. 



4 species. 



Synopsis of species: 



Without dorsal tubercles 1. L. purus . . . p. 696 



With dorsal tubercles — 2. 



J Dorsal tubercles obtuse 2. L. tuberculatus p. 696 



) Dorsal tubercles spiniform — 3. 



Tubercles not more than 2 in transversa row ... 3. L. armatus . . p. 697 



Tubercles as many as 4 in transversa row . . . . 4. L. hystrix . . . p. 697 



