STOMATOPODA 



383 



M. stenolepis S. I. Smith (Fig. 613). Body cylindrical; carapace 

 Avitli a short, blunt rostruni, and with its lower anterior margin extended 

 to form a sliai*p tooth; body bends between the first and second abdom- 

 inal segments; length, male, 

 23 mm., female, 30 mm.; 

 color white, wdth black stel- 

 late spots: coast of New 

 Eng'land and southwards, 

 often common in eel gi-ass. 



M. relict a Loven (Fig 



Fig. 613 



614). Body slender, 18 mm. long: 

 in Lakes Superior and Michigan; Europe and 

 Asia, in large fresh-water lakes. 



2. Heteromysis S. I. Smith. First pair of thoracic 



legs larger than the others 

 and ending each Avith a 

 claw; antennal scale very 

 small; abdominal append- 

 ** ages rudimentary in both 



Fig. 614 — Mysis relicta (SUssw. F. Deut.). 

 1, flagella of first antenna ; 2, scale of second male and female : One 

 antenna ; 3, second antenna. 



species. 



H. formosa Smith. Length of male 6 mm., of female 8.5 mm.; 



females rose-colored; males colorless: coast of New 



England, in eel grass or often in dead mollusk shells, 



sometimes in swarms. 



Order 2. STOMATOPODA.* 



Body large, with a small flat carapace which does 

 not cover the posterior thoracic somites, with a broad 

 elongated abdomen bearing gills on the appendages; 5 

 jDairs of maxillipeds, the second pair being much larger 

 than the rest and subchelate, and 3 pairs of periopods: 

 heart long and tubular ; liver, testes, and ovaries extend- 

 ing the length of the thorax and abdomen, the testes 

 being a pair of delicate tubes and the ovaries a broad 

 median band: 10 genera and about 90 species, all 

 marine; often used for food. 



Sqtjilla Fabricius. Five posterior thoracic 

 somites not covered by the carapace, of which the first 

 is very small and the second has a lateral spur on each side and the last 

 3 bear the periopods : 21 species. 



Fig. Q15—Squilla 

 empusa (Paul- 

 meier). 1, first an- 

 tenna ; 2, second 

 antenna ; 3, scale 

 of second antenna ; 

 4, second maxilll- 

 ped ; 5, periopods ; 

 6, uropod. 



* See "Report on the Crustacea of the Order Stomatopoda, 

 Proc. U. S. N. Mus., Vol. 17, p. 489, 1891. 



etc., by R. P. Biglow, 



