30 MARINE ISOPODS FROM THE PHILIPPINE ISLANDS. 



BOTRYIAS, gen. nov. 



Head without eyes. Frontal margin produced in the middle in a process continu- 

 ous with the frontal lamina, which is produced anteriorly in two long, rounded pro- 

 cesses. Maxillipeds with the fourth, fifth, and sixth articles produced into lobes or 



processes. 



Lateral parts of seventh thoracic segment not produced in processes as those of the 

 preceding segments. 



Abdomen composed of two segments, the last triangular with posterior margin 

 rounded, entire. Uropods with both branches of nearly equal length and similar in 

 shape. 



Legs similar, ambulatory. 



Last two pairs of pleopods (fourth and fifth pairs) similar in appearance, of fleshy 

 aspect, with neither branch two-jointed. 



The type of the genus is Botryias fructiger, sp. nov. 



Botryias fructiger, sp. nov. 



Body ovate, almost twice as long as wide, 3.5 mm.: 6 mm. Surface of body covered 

 with large tubercles, each one surmounted with a cluster of small bodies having 



a stem or peduncle and a flat round disk 

 on top. Color yellow, with thorax and 

 head orange. The small disk-like bodies are 

 white. 



Head wider than long; anterior margin 

 straight, with acute anterolateral angles. 

 Front produced in the middle between the 

 antennae in a process continuous with the 

 frontal lamina, which projects anteriorly in 

 two elongated rounded processes, one on 

 either side of the median line. Eyes ab- 

 sent. The basal article of the first antennae 

 is large, about three times as long as wide; 

 the second article is a little more than half 

 as long as the first; the third article is twice 

 as long as the second, and extends almost 

 to the end of the peduncle of the second 

 antennae. The flagellum, composed of seven 

 articles, extends to the end of the third ar- 

 ticle of the flagellum of the second antennae. 

 The second antennae with a flagellum of nine 

 articles, extends to the postlateral angle of 

 the first thoracic segment. There are nine 

 tubercles on the head, five in a transverse 

 line, one in the median line, and two on 

 either side, the outer ones very large. Lateral 

 to these are two tubercles on either side. All are surmounted with a cluster of small 

 bodies, composed of a stem or peduncle and a flat, round disk on top. 



The first segment of the thorax is a little longer than any of the following, which 

 are about equal in length. Each of the segments have a transverse row of twelve 

 tubercles, six on either side of the median line, each surmounted with a cluster of 

 bodies, having a stem or peduncle which is surmounted by a flat, round disk. 

 There are about fifteen to eighteen of these bodies on each tubercle. On the first 



Fig. 28.— Botryias fructiger. X 12. 



