116 



the sides and the posterior part of the animal are very closely covered with tiny dots which 

 resemble the base of fine hairs, yet no such hairs could be seen. Prom the outer angle of 

 the first pair of legs this curious area is crossed by a narrow naked stripe which runs 

 upwai-d in an oblique direction and somewhat backward across the side and the back (fig. 3i); 

 the ventral surface of the trunk between the legs and the caudal stylets is covered with 

 moderately long hairs. The first pair of legs are good-sized, witji a broad basal part and 

 both branches well developed ; the inner branch, which is a little shorter than the outer one, 

 is pointed, the outer branch is blunt, terminating in two setae, one of which is plumose and 

 double the length of the branch. The second pair of legs about as long as, or a little 

 shorter than, the outer branch of the first pair, having near its base a short conical outer 

 branch with a short terminal seta, whereas the terminal seta of the inner branch is still 

 longer than that of the outer branch of the first pair of legs. The caudal stylets of mode- 

 rate length, terminating in some setae, the longest of which is only a little longer than 

 the stylet. 



OVISACS. Globular or oval (fig. 3 c) and rather small in proportion to the adult 

 female (fig. 3 a) ; the eggs in each ovisac comparatively small and pretty numerous. 



LARVA. The length of a free specimen (fig. 3 k) -24 mm. The cephalothorax ovate. 

 The front (fig. 3 1) has an oblique list inside the anterior angle of each antennula ; tliis 

 appendage is 2-jointed, its olfactory seta reacliing somewhat beyond the middle of the 

 cephalothorax, and being somewhat more tlian double the length of the antennula. The 

 antennae a little shorter than the antennulte, 3-jointed, first and second joints of equal length, 

 the third joint short, provided with a terminal seta which is of equal length to, or longer 

 than, the two last joints combined. The maxillulae each with four branches, the foremost 

 and inner one of which is rather short, the thiee others long and powerful, the hindmost 

 bending backward and distinctly plumose. The maxilla; normal, with smooth joints. The 

 second joint of the maxillipeds slightly longer than the third one, the fourth joint with a 

 few setae inside the apex. The thick seta at the posterior angle of the first abdominal 

 segment reaches somewhat beyond the extremity of the caudal stylets; the tliird segment is 

 very short, and the caudal stylets more or less distinctly set ofl', their terminal seta being 

 about as long as the cephalothorax. 



POST-LARVAL DEVELOPMENT. Unknown. 



HABITAT. The marsupiura of Calliopius Iceviusculus (Kr.) from the East coast of 

 Asia between lat. 40" N. and lat. 51" N. In a large material were found altogether seven 

 specimens infested with parasites. One specimen is from vlat. 40" N., long. 134" E., Capt. 

 Andr6a, 1869«; in its marsupium were found two moderately small females, the smallest 

 male found, no ovisacs, but numerous — about thirty-tlu'ee — free larvae. Tlu'ee specimens 

 are from »lat. 45" 40' N., long. 139" E., Andrea, 1869«; in the largest of them were found 

 six females, two males and twenty-five ovisacs, in the second specimen foiu- females and six 

 ovisacs, in the third three females, twenty-foiu- ovisacs and at least two males (the host has 



