20 MARINE ISOPODS FROM THE PHILIPPINE ISLANDS. 



the apex produced in a point. The outer branch of the uropoda is slightly shorter 

 than the inner branch; both branches are similar in shape, oar-like, with the posterior 

 margins rounded. 



All the legs are prehensile, with a high carina on the basis of the last four pairs, 

 which gradually increases in size, being very high on the seventh pair. 



Only one specimen, an adult female, was taken, at station 5402, Capitancillo Island 

 Light, S. 37° W., 16.8 mi. (11° ll 7 45" N., 124° 15' 45" E.) at a depth of 188 fathoms, 

 in green mud. Type, catalogue number 40935, United States National Museum. 



Only two other species of this genus are known, L. typus Bleeker and L. auritus 

 Schicedte and Meinert. This species is very close to Lobothorax auritus Schicedte and 

 Meinert a from the Philippine Islands, but differs in having the front of the head less 

 triangular and more truncate, in having larger eyes, in having the dorsal surface of the 

 body smooth and not impressed or caniculate, in the longer outer branch of the uro- 

 poda and the difference in shape of both branches, and in the smaller size of the 

 species. 



Genus MEINERTIA Stebbing. 

 Meinertia guttata, sp. nov. 



Body oblong-ovate, 18 mm. long, and 8.25 mm. wide at its greatest breadth. Color 

 yellow and thickly covered with small black dots. 



Head triangular in shape, 2 mm. long and 2.5 mm. wide at the base. The eyes are 

 small, round, placed at the sides of the head, about the length of one eye from the 

 posterior margin. The first pair of antennae are dilated, flattened, composed of seven 

 articles and extend to the posterior margin of the eye. The first three articles are 

 large and subequal, the four following are short. The second pair of antennae are 

 also dilated and flattened and composed of seven articles. 

 They extend to the posterior margin of the head. 



The anterolateral angles of the first thoracic segment ex- 

 tend as far as the posterior margin of the eye. The first 

 segment is longer than any of those following, being 2.5 

 mm. in length. The following four segments are subequal 

 and each is 2 mm. long; the sixth segment is 1.5 mm.; 

 the seventh 0.5 mm. in length. The thorax increases in 

 breadth from the first segment. The 

 first segment is 4 mm. wide; the sec- 

 ond and third are 5.5 mm.; the fourth 

 is 6.5 mm.; the fifth is 8.25 mm.; 

 the sixth 8 mm.; the seventh 6 mm. 

 Epimera are present on all the seg- 

 ments with the exception of the first; 

 the first two are rather long and nar- 

 row; the four following are shorter, 

 with the anterior portion broader than 

 the posterior portion, those of the fifth 

 and sixth segments being twice as 

 broad anteriorly as posteriorly when viewed laterally. 



The abdomen is abruptly narrower than the thorax, the first segment being only 3 

 mm. wide and deeply immersed in the last segment of the thorax. The second seg- 

 ment is wider, being 4.5 mm. in width, and the three following are nearly as wide. 

 The first five segments are subequal in length and are each about as long as the seventh 

 thoracic segment, 0.5 mm. The sixth or terminal segment is 4 mm. wide at the base 

 and tapers a little to the extremity, which is 3 mm. wide. This segment is 2.5 mm. 



Seventh leg. X15}£ 

 Fig. 19. — Meinertia guttata. X3g 



aSaophra aurita Schicedte and Meinert, Nat. Tidsskr. (3), xra, 1881-1883, p. 284-286, pi. xi, fig. 3-4. 



