42fi TAGE SKOGSBERG 



Maxilla: — This is very like the corresponding appendage in Ph. (Ph.) globosa. 

 Protopodite: First endite (fig. 12): This has eleven distal bristles; in one specimen as 

 many as twelve were observed on the maxilla of one side, on another only nine, but in the latter 

 case it seemed probable that one or more bristles had been broken off. The extra bristle was 

 placed close to the short one and was somewhat shorter and weaker than the powerful bristles; 

 it had a wreath of long, stiii secondary bristles at the middle and was fairly strongly pectinated 

 distallv. In the case of twelve bristles the two extra bristles were of the type just 

 described. Second endite see fig. 13. The third endite (fig. 14) has nine bristles. As in 

 Ph. (Ph.) globosa, the equipment of the bristles, especially the distal ones, and the number 

 and strength of the secondary teeth are subject to variation. The bristle on the anterior side 

 of the palp at the boundary between the protopodite and the endopodite is very short and almost 

 bare. E x o p o d i t e (fig. 15): The equipment of the three bristles varies; one of the long ones 

 often has no long secondary bristles. Endopodite (fig. 15): End joint: This has usually 

 three a-bristles and three or four, usually three, c-bristles; the jiowerful b- and d-bristles are 

 almost bare. 



F i f t h limb: — This is very like the type described for Ph. (Ph.) gluhosa. P r o t o- 

 p o d i t e: First endite (fig. 17) : The anterior and the posterior bristle are in most cases somewhat 

 shorter than in the species just mentioned and have no long secondary bristles. The second 

 endite (fig. 18) has only seven, the third (fig. 19) only eleven bristles. Exopodite: The 

 anterior constituent tooth of the main tooth (fig. 20), like the tooth-like protuberance situated 

 at its base, is less clumsy than in the species mentioned. The bristles on the anterior and posterior 

 edges of the main tooth are subequal and of moderate length and strength; there is sometimes 

 a wreath of long, stiff secondary bristles at the middle of all three; sometimes the bristle situated 

 behind the main tooth has no such wreath. Second joint (fig. 22): One of the outer bristles in 

 the group of three bristles is relatively long, being about two-thirds or three-quarters of the length 

 of the long middle bristle. Third joint: Of the two bristles on the outer lobe one is relatively 

 short and weak, being only about half as long as the other. The shorter of these two bristles 

 has a few long, stiff secondarv bristles at the middle, the other has a few wreaths of similar 

 bristles. In one specimen four bristles were observed on the inner lobe of this joint on the limb 

 of one side. 



S i x t h 1 i m b (fig. 16): — This is very like that of Ph. (Ph.) globosa. ^ye may add: 

 Of the two medial bristles on the first endite of the protopodite one is short, the other usually 

 moderately long. The endite on the first joint of the exopodite has one or two medial bristles 

 and from eight to ten distal bristles. The second exopodite joint has 32 — 36 bristles distallv. 



8 e V e n t h 1 i m b (fig. 23): — This is about half the length of the shell. The cleaning 

 bristles (fig. 24) are comparatively few in number, only ten to twelve being observed; of these 

 three d(n-sal ones and three ventral ones are placed closely together distallv, and from four to 

 six, two or three on each side, are scattered somewhat proximally of the former ones. Some of 

 the distal bristles are rather long, the others are of moderate and somewhat varying length. On 

 the long bristles there are about six tf) ten, on the shorter ones two to six, bells cutoff transversally 

 distally; the t<jngue of the distal bell is also cut off transversally distally. Proximally of the 



