153 



female (the one figured), no male, but six free ovisacs; in anothei- specimen were detected: 

 one female, one male and eight free ovisacs (all with eggs); in a tliird: one female, one 

 male and nine ovisacs (four of these glued togethei') ; in a fourth : one female, one male, and 

 nine ovisacs (some of them with Natiplii). In a fifth specimen I discovered: one female, 

 two males and twenty ovisacs, ten of which adhered to each other in one lump, four in 

 another; several of them contained larvae, some of which had even thrown off the egg- 

 membrane. In a sixth specimen, at least seventeen ovisacs adhered to each other in a big 

 lump which surrounded the female, so that only part of one of its sides helped to form the 

 outer wall of the lump, wliile a male was sitting in a hole between the ovisacs on the 

 opposite side; the whole lump had shaped itself after the cavity of the marsupium, it was 

 nicely smoothed and had a slight longitudinal groove on the surface, which was turned 

 towards the venti-al side of the animal; all the ovisacs were more or less iiattened and 

 fitted together like mosaic ; some of them contained eggs, some of them half developed, others 

 quite developed larvae. 



28. Sphaeronella modesta n. sp. 



(PI. IX, fig.2a-2i). 



FEMALE. It always seems to be longer than broad, ovate, and a specimen which 

 had laid numerous ovisacs, was 1"23 mm. long and 87 mm. broad (fig. 2a). The head is 

 small, well defined from the trunk. The frontal border lather considerably produced; its 

 margin naked and centrally a little emarginate; close beliiud this margin on the lower side is an 

 odd, tolerably good-sized square area (fig. 2 d, x) with rounded corners ; the aiea seems to 

 be pierced with rather numerous holes. Antennuhe pretty long and powerful, 3-jointed, 

 with some set* of medium length. Antenna wanting. Principal blanches of the maxillulae 

 rather short, additional branch long. Basal joint of the maxillae large and smooth; a nmnber 

 of taps are seen on the distal part of the connecting membrane between the first and the 

 second joint; second and third joints separated. Maxillipeds good-sized, their basal joint has 

 several rather shoit transverse rows of very fine, short hairs, second and tliird joints separated ; 

 the last joint terminates in a point inside which it has some spines; the spine at the end 

 of the tliird joint shorter than in S. dccorata, but of a similar shape and e(iuipnient. Sub- 

 median skeleton well developed, with three pairs of longitudinal li.sts, parts of which ai-e 

 rather broad, inside the niaxill*; no eminence behind the base of the maxillipeds. The 

 lateral margin of the head has a row of short hairs. In mie specimen the trunk is cpiite 

 naked, in another it has a number of simple, moderately Imig hairs which are partly arranged 

 in rows on a minor area behind the head. Genital area smaller than the head (fig. 2 a), 

 much broader than, or about twice as broad as, long (fig. 2e); it is a chitinised, somewhat 

 irregular and, according to the individuals, somewhat ditterently shaped plate with a cen- 

 trally inflexed postei'ior margin; the genital apertures oblique and considerably curved, 



20 



