78 



PROCEEDINGS OF THE NATIONAL MUSEUM. 



VOL. XXXV. 



Color, in alcohol, 



JANIRELLA LOBATA, new species. 



Body oblong-ovate, about twice as long as wide, 

 whitish. 



Head wider than long, with the front produced in a long, prominent 

 rostrum, which is bifid at the extremity and has a rounded tooth or 

 lobe on either side of the bifid extremity a little posterior to it; the 

 lateral margins of the head, just back of the antero-lateral angles, 

 are also produced in large lobes, one on either side, directed anteriorly 

 and having broad extremities; on the dorsal surface of the head, on 

 either side of the median line, is a small 

 tubercle near the posterior margin. 



The eyes are entirely absent. The first 

 pair of antennae have the first article of the 

 peduncle large ; the two following articles are 

 subequal in length and are each about half 

 as long and half as wide as the basal article ; 

 the flagellum is composed of six articles. 

 The second pair of antennae have the first 

 four articles of the peduncle short, the third 

 furnished with an antennal scale. In all the 

 specimens (ten in number) the antennae are 

 broken at the fourth article. 



The first segment of the thorax has the 

 lateral margins produced on either side in a 

 large lobe, broad at the extremity, similar in 

 shape to the lateral lobes of the head, and 

 also directed anteriorly; the second, third, 

 and fourth segments have the lateral mar- 

 gins produced on either side in three lobes, 

 the posterior lobe being the largest and very 

 broad at the extremity, the median lobe the smallest, and the anterior 

 lobe rounded; in the third and fourth segments the middle lobe is 

 inclined to be double; the fifth and sixth segments have the lateral 

 margins produced in a large rounded anterior 

 lobe and a smaller posterior lobe, the posterior 

 lobe in the fifth segment being subdivided into 

 three small lobes; the seventh segment has 

 the lateral margins produced in one large broad 

 lobe on either side; the segments are about 

 equal in length, and each is furnished with two 

 tubercles, one on either side of the median line. 

 In the four anterior segments the tubercles are 

 placed on the anterior margin; in the three posterior segments they 

 are placed in the middle transverse line of the segment. 



The abdomen is composed of a single segment, which is broad at the 

 base and converges to a narrow extremity. The lateral margins are 



FIG. 8. JANIRELLA LOBATA. 



Fig. 9. — Janirella lo- 

 bata. First leg of 

 female. 



