612 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. xxxm. 



that their figure is not shaded so as to show the relative positions of 

 the two pairs of wings, and that they make no definite statement in 

 this respect, leaves it not only possible but even probable that the 

 arrangement in their species was just like that in the present one. 

 Both species are transparent enough to show most of the details 

 right through the wings. 



And if their figure be compared with the one here presented it 

 will be seen that a little shading would make the two identical as 

 regards this wing arrangement. The absence of such shading made 

 possible the errors in Bassett-Smith's diagnosis. 



ABASIA, new genus. 



Genus diagnosis. — Body elongate, with regions distinctly marked; 

 first three thorax segments united with the head and covered by a 

 rounded carapace. This latter is deeply notched on either side ante- 

 riorly, the portion between the notches being produced into a sort 

 of broad rostrum one-third as long as the rest of the carapace. Fron- 

 tal plates borne on the anterior end of this rostrum, distinct, and 

 without lunules. Sides of the carapace folded over ventrally, as in 

 Lernanthropus. Cephalic and thoracic portions more strongly arched 

 and much thicker than the lateral areas. Fourth segment as in 

 Caligus, small and without dorsal plates. Genital segment elongate 

 acorn-shaped, nearly as large as the carapace, and without lobes or 

 appendages. Abdomen two-jointed, the first joint many times larger 

 than the second; anal laminae minute. Second antennae in the 

 female and second maxillae in both sexes ruidmentary; first maxillae 

 and furca entirely wanting. Thoracic legs as in Caligus. Eggs com- 

 paratively large. 



Type of genus. — Abasia pseudorostris. 



{Ahasia, from Abas, the son of Metanira, changed by Ceres into a 

 lizard because he mocked the goddess.) 



ABASIA PSEUDOROSTRIS, new species. 

 Plate LIV and Plate LVI, fig. 100. 



Type— Q At. No. 32811 U. S. National Museum. 



Female. — Carapace orbicular, less than one-third the entire length 

 as wide as long; deeply notched on either side close to the anterior 

 margin. The portion on the mid line, included between these 

 notches, forms a broad rostrum, one-third the entire width of the 

 carapace, and projecting considerably in front of the latter. Fron- 

 tal plates distinct, but short and narrow, the two together only as 

 wide as the rostrum. Frontal margin deeply notched at the center 

 and showing at the base of this notch the remains of a frontal fila- 

 ment; no lunules. 



